merge development

48 files changed, 918 insertions, 808 deletions

diff --git a/packages/connect/CHANGELOG.json b/packages/connect/CHANGELOG.json
index 87fbcdd22..514ebb039 100644
--- a/packages/connect/CHANGELOG.json
+++ b/packages/connect/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "version": "2.0.0-rc.1",
+        "changes": [
+            {
+                "note": "Updated for SRA v2",
+                "pr": 974
+            }
+        ]
+    },
+    {
         "timestamp": 1534210131,
         "version": "2.0.0",
         "changes": [
diff --git a/packages/connect/package.json b/packages/connect/package.json
index 5de8dae13..13326df9b 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -44,14 +44,15 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/connect/README.md",
     "dependencies": {
-        "@0xproject/assert": "^0.2.14",
-        "@0xproject/json-schemas": "^0.8.3",
-        "@0xproject/types": "^0.8.2",
+        "@0xproject/assert": "^1.0.5",
+        "@0xproject/json-schemas": "^1.0.1-rc.4",
+        "@0xproject/types": "^1.0.1-rc.4",
         "@0xproject/typescript-typings": "^1.0.4",
         "@0xproject/utils": "^1.0.5",
         "lodash": "^4.17.5",
         "query-string": "^5.0.1",
         "sinon": "^4.0.0",
+        "uuid": "^3.3.2",
         "websocket": "^1.0.25"
     },
     "devDependencies": {
@@ -61,6 +62,7 @@
         "@types/mocha": "^2.2.42",
         "@types/query-string": "^5.0.1",
         "@types/sinon": "^2.2.2",
+        "@types/uuid": "^3.4.3",
         "@types/websocket": "^0.0.39",
         "async-child-process": "^1.1.1",
         "chai": "^4.0.1",
diff --git a/packages/connect/src/http_client.ts b/packages/connect/src/http_client.ts
index 03cc590e4..b90c2c35f 100644
--- a/packages/connect/src/http_client.ts
+++ b/packages/connect/src/http_client.ts
@@ -7,31 +7,25 @@ import * as queryString from 'query-string';
 
 import { schemas as clientSchemas } from './schemas/schemas';
 import {
+    APIOrder,
+    AssetPairsRequestOpts,
+    AssetPairsResponse,
     Client,
-    FeesRequest,
-    FeesResponse,
+    FeeRecipientsResponse,
     HttpRequestOptions,
     HttpRequestType,
     OrderbookRequest,
     OrderbookResponse,
+    OrderConfigRequest,
+    OrderConfigResponse,
     OrdersRequestOpts,
+    OrdersResponse,
     PagedRequestOpts,
-    TokenPairsItem,
-    TokenPairsRequestOpts,
+    RequestOpts,
 } from './types';
 import { relayerResponseJsonParsers } from './utils/relayer_response_json_parsers';
 
 const TRAILING_SLASHES_REGEX = /\/+$/;
-const DEFAULT_PAGED_REQUEST_OPTS: PagedRequestOpts = {
-    page: 1,
-    perPage: 100,
-};
-/**
- * This mapping defines how an option property name gets converted into an HTTP request query field
- */
-const OPTS_TO_QUERY_FIELD_MAP = {
-    perPage: 'per_page',
-};
 
 /**
  * This class includes all the functionality related to interacting with a set of HTTP endpoints
@@ -47,12 +41,8 @@ export class HttpClient implements Client {
         if (_.isUndefined(params) || _.isEmpty(params)) {
             return '';
         }
-        // format params into a form the api expects
-        const formattedParams = _.mapKeys(params, (_value: any, key: string) => {
-            return _.get(OPTS_TO_QUERY_FIELD_MAP, key, key);
-        });
         // stringify the formatted object
-        const stringifiedParams = queryString.stringify(formattedParams);
+        const stringifiedParams = queryString.stringify(params);
         return `?${stringifiedParams}`;
     }
     /**
@@ -65,34 +55,40 @@ export class HttpClient implements Client {
         this._apiEndpointUrl = url.replace(TRAILING_SLASHES_REGEX, ''); // remove trailing slashes
     }
     /**
-     * Retrieve token pair info from the API
-     * @param   requestOpts     Options specifying token information to retrieve and page information, defaults to { page: 1, perPage: 100 }
-     * @return  The resulting TokenPairsItems that match the request
+     * Retrieve assetData pair info from the API
+     * @param   requestOpts     Options specifying assetData information to retrieve, page information, and network id.
+     * @return  The resulting AssetPairsResponse that match the request
      */
-    public async getTokenPairsAsync(requestOpts?: TokenPairsRequestOpts & PagedRequestOpts): Promise<TokenPairsItem[]> {
+    public async getAssetPairsAsync(
+        requestOpts?: RequestOpts & AssetPairsRequestOpts & PagedRequestOpts,
+    ): Promise<AssetPairsResponse> {
         if (!_.isUndefined(requestOpts)) {
-            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.tokenPairsRequestOptsSchema);
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.assetPairsRequestOptsSchema);
             assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.pagedRequestOptsSchema);
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.requestOptsSchema);
         }
         const httpRequestOpts = {
-            params: _.defaults({}, requestOpts, DEFAULT_PAGED_REQUEST_OPTS),
+            params: requestOpts,
         };
-        const responseJson = await this._requestAsync('/token_pairs', HttpRequestType.Get, httpRequestOpts);
-        const tokenPairs = relayerResponseJsonParsers.parseTokenPairsJson(responseJson);
-        return tokenPairs;
+        const responseJson = await this._requestAsync('/asset_pairs', HttpRequestType.Get, httpRequestOpts);
+        const assetDataPairs = relayerResponseJsonParsers.parseAssetDataPairsJson(responseJson);
+        return assetDataPairs;
     }
     /**
      * Retrieve orders from the API
-     * @param   requestOpts     Options specifying orders to retrieve and page information, defaults to { page: 1, perPage: 100 }
-     * @return  The resulting SignedOrders that match the request
+     * @param   requestOpts     Options specifying orders to retrieve and page information, page information, and network id.
+     * @return  The resulting OrdersResponse that match the request
      */
-    public async getOrdersAsync(requestOpts?: OrdersRequestOpts & PagedRequestOpts): Promise<SignedOrder[]> {
+    public async getOrdersAsync(
+        requestOpts?: RequestOpts & OrdersRequestOpts & PagedRequestOpts,
+    ): Promise<OrdersResponse> {
         if (!_.isUndefined(requestOpts)) {
             assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.ordersRequestOptsSchema);
             assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.pagedRequestOptsSchema);
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.requestOptsSchema);
         }
         const httpRequestOpts = {
-            params: _.defaults({}, requestOpts, DEFAULT_PAGED_REQUEST_OPTS),
+            params: requestOpts,
         };
         const responseJson = await this._requestAsync(`/orders`, HttpRequestType.Get, httpRequestOpts);
         const orders = relayerResponseJsonParsers.parseOrdersJson(responseJson);
@@ -101,30 +97,37 @@ export class HttpClient implements Client {
     /**
      * Retrieve a specific order from the API
      * @param   orderHash     An orderHash generated from the desired order
-     * @return  The SignedOrder that matches the supplied orderHash
+     * @return  The APIOrder that matches the supplied orderHash
      */
-    public async getOrderAsync(orderHash: string): Promise<SignedOrder> {
+    public async getOrderAsync(orderHash: string, requestOpts?: RequestOpts): Promise<APIOrder> {
+        if (!_.isUndefined(requestOpts)) {
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.requestOptsSchema);
+        }
         assert.doesConformToSchema('orderHash', orderHash, schemas.orderHashSchema);
-        const responseJson = await this._requestAsync(`/order/${orderHash}`, HttpRequestType.Get);
-        const order = relayerResponseJsonParsers.parseOrderJson(responseJson);
+        const httpRequestOpts = {
+            params: requestOpts,
+        };
+        const responseJson = await this._requestAsync(`/order/${orderHash}`, HttpRequestType.Get, httpRequestOpts);
+        const order = relayerResponseJsonParsers.parseAPIOrderJson(responseJson);
         return order;
     }
     /**
      * Retrieve an orderbook from the API
      * @param   request         An OrderbookRequest instance describing the specific orderbook to retrieve
-     * @param   requestOpts     Options specifying page information, defaults to { page: 1, perPage: 100 }
+     * @param   requestOpts     Options specifying page information, and network id.
      * @return  The resulting OrderbookResponse that matches the request
      */
     public async getOrderbookAsync(
         request: OrderbookRequest,
-        requestOpts?: PagedRequestOpts,
+        requestOpts?: RequestOpts & PagedRequestOpts,
     ): Promise<OrderbookResponse> {
         assert.doesConformToSchema('request', request, clientSchemas.orderBookRequestSchema);
         if (!_.isUndefined(requestOpts)) {
             assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.pagedRequestOptsSchema);
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.requestOptsSchema);
         }
         const httpRequestOpts = {
-            params: _.defaults({}, request, requestOpts, DEFAULT_PAGED_REQUEST_OPTS),
+            params: _.defaults({}, request, requestOpts),
         };
         const responseJson = await this._requestAsync('/orderbook', HttpRequestType.Get, httpRequestOpts);
         const orderbook = relayerResponseJsonParsers.parseOrderbookResponseJson(responseJson);
@@ -132,28 +135,55 @@ export class HttpClient implements Client {
     }
     /**
      * Retrieve fee information from the API
-     * @param   request     A FeesRequest instance describing the specific fees to retrieve
-     * @return  The resulting FeesResponse that matches the request
+     * @param   request         A OrderConfigRequest instance describing the specific fees to retrieve
+     * @param   requestOpts     Options specifying network id.
+     * @return  The resulting OrderConfigResponse that matches the request
      */
-    public async getFeesAsync(request: FeesRequest): Promise<FeesResponse> {
-        assert.doesConformToSchema('request', request, clientSchemas.feesRequestSchema);
+    public async getOrderConfigAsync(
+        request: OrderConfigRequest,
+        requestOpts?: RequestOpts,
+    ): Promise<OrderConfigResponse> {
+        if (!_.isUndefined(requestOpts)) {
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.requestOptsSchema);
+        }
+        assert.doesConformToSchema('request', request, clientSchemas.orderConfigRequestSchema);
         const httpRequestOpts = {
+            params: requestOpts,
             payload: request,
         };
-        const responseJson = await this._requestAsync('/fees', HttpRequestType.Post, httpRequestOpts);
-        const fees = relayerResponseJsonParsers.parseFeesResponseJson(responseJson);
+        const responseJson = await this._requestAsync('/order_config', HttpRequestType.Post, httpRequestOpts);
+        const fees = relayerResponseJsonParsers.parseOrderConfigResponseJson(responseJson);
         return fees;
     }
     /**
+     * Retrieve the list of fee recipient addresses used by the relayer.
+     * @param   requestOpts     Options specifying page information, and network id.
+     * @return  The resulting FeeRecipientsResponse
+     */
+    public async getFeeRecipientsAsync(requestOpts?: RequestOpts & PagedRequestOpts): Promise<FeeRecipientsResponse> {
+        if (!_.isUndefined(requestOpts)) {
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.pagedRequestOptsSchema);
+            assert.doesConformToSchema('requestOpts', requestOpts, clientSchemas.requestOptsSchema);
+        }
+        const httpRequestOpts = {
+            params: requestOpts,
+        };
+        const feeRecipients = await this._requestAsync('/fee_recipients', HttpRequestType.Get, httpRequestOpts);
+        assert.doesConformToSchema('feeRecipients', feeRecipients, schemas.relayerApiFeeRecipientsResponseSchema);
+        return feeRecipients;
+    }
+    /**
      * Submit a signed order to the API
      * @param   signedOrder     A SignedOrder instance to submit
+     * @param   requestOpts     Options specifying network id.
      */
-    public async submitOrderAsync(signedOrder: SignedOrder): Promise<void> {
+    public async submitOrderAsync(signedOrder: SignedOrder, requestOpts?: RequestOpts): Promise<void> {
         assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
-        const requestOpts = {
+        const httpRequestOpts = {
+            params: requestOpts,
             payload: signedOrder,
         };
-        await this._requestAsync('/order', HttpRequestType.Post, requestOpts);
+        await this._requestAsync('/order', HttpRequestType.Post, httpRequestOpts);
     }
     private async _requestAsync(
         path: string,
diff --git a/packages/connect/src/index.ts b/packages/connect/src/index.ts
index 2ca5312fe..abc105891 100644
--- a/packages/connect/src/index.ts
+++ b/packages/connect/src/index.ts
@@ -1,19 +1,19 @@
 export { HttpClient } from './http_client';
-export { orderbookChannelFactory } from './orderbook_channel_factory';
+export { ordersChannelFactory } from './orders_channel_factory';
 export {
     Client,
-    FeesRequest,
-    FeesResponse,
-    OrderbookChannel,
-    OrderbookChannelHandler,
-    OrderbookChannelSubscriptionOpts,
+    OrderConfigRequest,
+    OrderConfigResponse,
+    OrdersChannel,
+    OrdersChannelHandler,
+    OrdersChannelSubscriptionOpts,
     OrderbookRequest,
     OrderbookResponse,
     OrdersRequestOpts,
     PagedRequestOpts,
-    TokenPairsItem,
-    TokenPairsRequestOpts,
-    TokenTradeInfo,
+    AssetPairsItem,
+    AssetPairsRequestOpts,
+    Asset,
 } from './types';
 
 export { SignedOrder } from '@0xproject/types';
diff --git a/packages/connect/src/orderbook_channel_factory.ts b/packages/connect/src/orderbook_channel_factory.ts
deleted file mode 100644
index 5134af323..000000000
--- a/packages/connect/src/orderbook_channel_factory.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-import * as WebSocket from 'websocket';
-
-import { OrderbookChannel, OrderbookChannelHandler } from './types';
-import { assert } from './utils/assert';
-import { WebSocketOrderbookChannel } from './ws_orderbook_channel';
-
-export const orderbookChannelFactory = {
-    /**
-     * Instantiates a new WebSocketOrderbookChannel instance
-     * @param   url                  The relayer API base WS url you would like to interact with
-     * @param   handler              An OrderbookChannelHandler instance that responds to various
-     *                               channel updates
-     * @return  An OrderbookChannel Promise
-     */
-    async createWebSocketOrderbookChannelAsync(
-        url: string,
-        handler: OrderbookChannelHandler,
-    ): Promise<OrderbookChannel> {
-        assert.isUri('url', url);
-        assert.isOrderbookChannelHandler('handler', handler);
-        return new Promise<OrderbookChannel>((resolve, reject) => {
-            const client = new WebSocket.w3cwebsocket(url);
-            client.onopen = () => {
-                const orderbookChannel = new WebSocketOrderbookChannel(client, handler);
-                resolve(orderbookChannel);
-            };
-            client.onerror = err => {
-                reject(err);
-            };
-        });
-    },
-};
diff --git a/packages/connect/src/orders_channel_factory.ts b/packages/connect/src/orders_channel_factory.ts
new file mode 100644
index 000000000..5986d2a77
--- /dev/null
+++ b/packages/connect/src/orders_channel_factory.ts
@@ -0,0 +1,29 @@
+import * as WebSocket from 'websocket';
+
+import { OrdersChannel, OrdersChannelHandler } from './types';
+import { assert } from './utils/assert';
+import { WebSocketOrdersChannel } from './ws_orders_channel';
+
+export const ordersChannelFactory = {
+    /**
+     * Instantiates a new WebSocketOrdersChannel instance
+     * @param   url                  The relayer API base WS url you would like to interact with
+     * @param   handler              An OrdersChannelHandler instance that responds to various
+     *                               channel updates
+     * @return  An OrdersChannel Promise
+     */
+    async createWebSocketOrdersChannelAsync(url: string, handler: OrdersChannelHandler): Promise<OrdersChannel> {
+        assert.isUri('url', url);
+        assert.isOrdersChannelHandler('handler', handler);
+        return new Promise<OrdersChannel>((resolve, reject) => {
+            const client = new WebSocket.w3cwebsocket(url);
+            client.onopen = () => {
+                const ordersChannel = new WebSocketOrdersChannel(client, handler);
+                resolve(ordersChannel);
+            };
+            client.onerror = err => {
+                reject(err);
+            };
+        });
+    },
+};
diff --git a/packages/connect/src/schemas/asset_pairs_request_opts_schema.ts b/packages/connect/src/schemas/asset_pairs_request_opts_schema.ts
new file mode 100644
index 000000000..a9e3942a4
--- /dev/null
+++ b/packages/connect/src/schemas/asset_pairs_request_opts_schema.ts
@@ -0,0 +1,8 @@
+export const assetPairsRequestOptsSchema = {
+    id: '/AssetPairsRequestOpts',
+    type: 'object',
+    properties: {
+        assetDataA: { $ref: '/hexSchema' },
+        assetDataB: { $ref: '/hexSchema' },
+    },
+};
diff --git a/packages/connect/src/schemas/fees_request_schema.ts b/packages/connect/src/schemas/fees_request_schema.ts
deleted file mode 100644
index ff3d7b9d3..000000000
--- a/packages/connect/src/schemas/fees_request_schema.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-export const feesRequestSchema = {
-    id: '/FeesRequest',
-    type: 'object',
-    properties: {
-        exchangeContractAddress: { $ref: '/Address' },
-        maker: { $ref: '/Address' },
-        taker: { $ref: '/Address' },
-        makerTokenAddress: { $ref: '/Address' },
-        takerTokenAddress: { $ref: '/Address' },
-        makerTokenAmount: { $ref: '/Number' },
-        takerTokenAmount: { $ref: '/Number' },
-        expirationUnixTimestampSec: { $ref: '/Number' },
-        salt: { $ref: '/Number' },
-    },
-    required: [
-        'exchangeContractAddress',
-        'maker',
-        'taker',
-        'makerTokenAddress',
-        'takerTokenAddress',
-        'makerTokenAmount',
-        'takerTokenAmount',
-        'expirationUnixTimestampSec',
-        'salt',
-    ],
-};
diff --git a/packages/connect/src/schemas/order_config_request_schema.ts b/packages/connect/src/schemas/order_config_request_schema.ts
new file mode 100644
index 000000000..0eda430e8
--- /dev/null
+++ b/packages/connect/src/schemas/order_config_request_schema.ts
@@ -0,0 +1,24 @@
+export const orderConfigRequestSchema = {
+    id: '/OrderConfigRequest',
+    type: 'object',
+    properties: {
+        makerAddress: { $ref: '/addressSchema' },
+        takerAddress: { $ref: '/addressSchema' },
+        makerAssetAmount: { $ref: '/numberSchema' },
+        takerAssetAmount: { $ref: '/numberSchema' },
+        makerAssetData: { $ref: '/hexSchema' },
+        takerAssetData: { $ref: '/hexSchema' },
+        exchangeAddress: { $ref: '/addressSchema' },
+        expirationTimeSeconds: { $ref: '/numberSchema' },
+    },
+    required: [
+        'makerAddress',
+        'takerAddress',
+        'makerAssetAmount',
+        'takerAssetAmount',
+        'makerAssetData',
+        'takerAssetData',
+        'exchangeAddress',
+        'expirationTimeSeconds',
+    ],
+};
diff --git a/packages/connect/src/schemas/orderbook_request_schema.ts b/packages/connect/src/schemas/orderbook_request_schema.ts
index 5f3463242..0c9389d50 100644
--- a/packages/connect/src/schemas/orderbook_request_schema.ts
+++ b/packages/connect/src/schemas/orderbook_request_schema.ts
@@ -2,8 +2,8 @@ export const orderBookRequestSchema = {
     id: '/OrderBookRequest',
     type: 'object',
     properties: {
-        baseTokenAddress: { $ref: '/Address' },
-        quoteTokenAddress: { $ref: '/Address' },
+        baseAssetData: { $ref: '/hexSchema' },
+        quoteAssetData: { $ref: '/hexSchema' },
     },
-    required: ['baseTokenAddress', 'quoteTokenAddress'],
+    required: ['baseAssetData', 'quoteAssetData'],
 };
diff --git a/packages/connect/src/schemas/orders_request_opts_schema.ts b/packages/connect/src/schemas/orders_request_opts_schema.ts
index 5facbc959..71ce3d06f 100644
--- a/packages/connect/src/schemas/orders_request_opts_schema.ts
+++ b/packages/connect/src/schemas/orders_request_opts_schema.ts
@@ -2,15 +2,18 @@ export const ordersRequestOptsSchema = {
     id: '/OrdersRequestOpts',
     type: 'object',
     properties: {
-        exchangeContractAddress: { $ref: '/Address' },
-        tokenAddress: { $ref: '/Address' },
-        makerTokenAddress: { $ref: '/Address' },
-        takerTokenAddress: { $ref: '/Address' },
-        tokenA: { $ref: '/Address' },
-        tokenB: { $ref: '/Address' },
-        maker: { $ref: '/Address' },
-        taker: { $ref: '/Address' },
-        trader: { $ref: '/Address' },
-        feeRecipient: { $ref: '/Address' },
+        makerAssetProxyId: { $ref: '/hexSchema' },
+        takerAssetProxyId: { $ref: '/hexSchema' },
+        makerAssetAddress: { $ref: '/addressSchema' },
+        takerAssetAddress: { $ref: '/addressSchema' },
+        exchangeAddress: { $ref: '/addressSchema' },
+        senderAddress: { $ref: '/addressSchema' },
+        makerAssetData: { $ref: '/hexSchema' },
+        takerAssetData: { $ref: '/hexSchema' },
+        traderAssetData: { $ref: '/hexSchema' },
+        makerAddress: { $ref: '/addressSchema' },
+        takerAddress: { $ref: '/addressSchema' },
+        traderAddress: { $ref: '/addressSchema' },
+        feeRecipientAddress: { $ref: '/addressSchema' },
     },
 };
diff --git a/packages/connect/src/schemas/request_opts_schema.ts b/packages/connect/src/schemas/request_opts_schema.ts
new file mode 100644
index 000000000..a51e98069
--- /dev/null
+++ b/packages/connect/src/schemas/request_opts_schema.ts
@@ -0,0 +1,7 @@
+export const requestOptsSchema = {
+    id: '/RequestOpts',
+    type: 'object',
+    properties: {
+        networkId: { type: 'number' },
+    },
+};
diff --git a/packages/connect/src/schemas/schemas.ts b/packages/connect/src/schemas/schemas.ts
index 0b8b798a9..8d101ed6f 100644
--- a/packages/connect/src/schemas/schemas.ts
+++ b/packages/connect/src/schemas/schemas.ts
@@ -1,13 +1,15 @@
-import { feesRequestSchema } from './fees_request_schema';
+import { assetPairsRequestOptsSchema } from './asset_pairs_request_opts_schema';
+import { orderConfigRequestSchema } from './order_config_request_schema';
 import { orderBookRequestSchema } from './orderbook_request_schema';
 import { ordersRequestOptsSchema } from './orders_request_opts_schema';
 import { pagedRequestOptsSchema } from './paged_request_opts_schema';
-import { tokenPairsRequestOptsSchema } from './token_pairs_request_opts_schema';
+import { requestOptsSchema } from './request_opts_schema';
 
 export const schemas = {
-    feesRequestSchema,
+    orderConfigRequestSchema,
     orderBookRequestSchema,
     ordersRequestOptsSchema,
     pagedRequestOptsSchema,
-    tokenPairsRequestOptsSchema,
+    requestOptsSchema,
+    assetPairsRequestOptsSchema,
 };
diff --git a/packages/connect/src/schemas/token_pairs_request_opts_schema.ts b/packages/connect/src/schemas/token_pairs_request_opts_schema.ts
deleted file mode 100644
index 9b73a917b..000000000
--- a/packages/connect/src/schemas/token_pairs_request_opts_schema.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-export const tokenPairsRequestOptsSchema = {
-    id: '/TokenPairsRequestOpts',
-    type: 'object',
-    properties: {
-        tokenA: { $ref: '/Address' },
-        tokenB: { $ref: '/Address' },
-    },
-};
diff --git a/packages/connect/src/types.ts b/packages/connect/src/types.ts
index fc7a4b24d..06ae732a5 100644
--- a/packages/connect/src/types.ts
+++ b/packages/connect/src/types.ts
@@ -2,73 +2,55 @@ import { SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 
 export interface Client {
-    getTokenPairsAsync: (requestOpts?: TokenPairsRequestOpts & PagedRequestOpts) => Promise<TokenPairsItem[]>;
-    getOrdersAsync: (requestOpts?: OrdersRequestOpts & PagedRequestOpts) => Promise<SignedOrder[]>;
-    getOrderAsync: (orderHash: string) => Promise<SignedOrder>;
+    getAssetPairsAsync: (
+        requestOpts?: AssetPairsRequestOpts & PagedRequestOpts,
+    ) => Promise<PaginatedCollection<AssetPairsItem>>;
+    getOrdersAsync: (requestOpts?: OrdersRequestOpts & PagedRequestOpts) => Promise<PaginatedCollection<APIOrder>>;
+    getOrderAsync: (orderHash: string) => Promise<APIOrder>;
     getOrderbookAsync: (request: OrderbookRequest, requestOpts?: PagedRequestOpts) => Promise<OrderbookResponse>;
-    getFeesAsync: (request: FeesRequest) => Promise<FeesResponse>;
+    getOrderConfigAsync: (request: OrderConfigRequest) => Promise<OrderConfigResponse>;
+    getFeeRecipientsAsync: (requestOpts?: PagedRequestOpts) => Promise<FeeRecipientsResponse>;
     submitOrderAsync: (signedOrder: SignedOrder) => Promise<void>;
 }
 
-export interface OrderbookChannel {
-    subscribe: (subscriptionOpts: OrderbookChannelSubscriptionOpts) => void;
+export interface OrdersChannel {
+    subscribe: (subscriptionOpts: OrdersChannelSubscriptionOpts) => void;
     close: () => void;
 }
 
 /**
- * baseTokenAddress: The address of token designated as the baseToken in the currency pair calculation of price
- * quoteTokenAddress: The address of token designated as the quoteToken in the currency pair calculation of price
- * snapshot: If true, a snapshot of the orderbook will be sent before the updates to the orderbook
+ * baseAssetData: The address of assetData designated as the baseToken in the currency pair calculation of price
+ * quoteAssetData: The address of assetData designated as the quoteToken in the currency pair calculation of price
  * limit: Maximum number of bids and asks in orderbook snapshot
  */
-export interface OrderbookChannelSubscriptionOpts {
-    baseTokenAddress: string;
-    quoteTokenAddress: string;
-    snapshot: boolean;
+export interface OrdersChannelSubscriptionOpts {
+    baseAssetData: string;
+    quoteAssetData: string;
     limit: number;
 }
 
-export interface OrderbookChannelHandler {
-    onSnapshot: (
-        channel: OrderbookChannel,
-        subscriptionOpts: OrderbookChannelSubscriptionOpts,
-        snapshot: OrderbookResponse,
-    ) => void;
-    onUpdate: (
-        channel: OrderbookChannel,
-        subscriptionOpts: OrderbookChannelSubscriptionOpts,
-        order: SignedOrder,
-    ) => void;
-    onError: (channel: OrderbookChannel, err: Error, subscriptionOpts?: OrderbookChannelSubscriptionOpts) => void;
-    onClose: (channel: OrderbookChannel) => void;
-}
-
-export type OrderbookChannelMessage =
-    | SnapshotOrderbookChannelMessage
-    | UpdateOrderbookChannelMessage
-    | UnknownOrderbookChannelMessage;
-
-export enum OrderbookChannelMessageTypes {
-    Snapshot = 'snapshot',
-    Update = 'update',
-    Unknown = 'unknown',
+export interface OrdersChannelHandler {
+    onUpdate: (channel: OrdersChannel, subscriptionOpts: OrdersChannelSubscriptionOpts, orders: APIOrder[]) => void;
+    onError: (channel: OrdersChannel, err: Error, subscriptionOpts?: OrdersChannelSubscriptionOpts) => void;
+    onClose: (channel: OrdersChannel) => void;
 }
 
-export interface SnapshotOrderbookChannelMessage {
-    type: OrderbookChannelMessageTypes.Snapshot;
-    requestId: number;
-    payload: OrderbookResponse;
+export type OrdersChannelMessage = UpdateOrdersChannelMessage | UnknownOrdersChannelMessage;
+
+export enum OrdersChannelMessageTypes {
+    Update = 'update',
+    Unknown = 'unknown',
 }
 
-export interface UpdateOrderbookChannelMessage {
-    type: OrderbookChannelMessageTypes.Update;
-    requestId: number;
-    payload: SignedOrder;
+export interface UpdateOrdersChannelMessage {
+    type: OrdersChannelMessageTypes.Update;
+    requestId: string;
+    payload: APIOrder[];
 }
 
-export interface UnknownOrderbookChannelMessage {
-    type: OrderbookChannelMessageTypes.Unknown;
-    requestId: number;
+export interface UnknownOrdersChannelMessage {
+    type: OrdersChannelMessageTypes.Unknown;
+    requestId: string;
     payload: undefined;
 }
 
@@ -83,60 +65,86 @@ export enum WebsocketClientEventType {
     ConnectFailed = 'connectFailed',
 }
 
-export interface TokenPairsRequestOpts {
-    tokenA?: string;
-    tokenB?: string;
+export type OrdersResponse = PaginatedCollection<APIOrder>;
+
+export interface APIOrder {
+    order: SignedOrder;
+    metaData: object;
+}
+
+export interface AssetPairsRequestOpts {
+    assetDataA?: string;
+    assetDataB?: string;
 }
 
-export interface TokenPairsItem {
-    tokenA: TokenTradeInfo;
-    tokenB: TokenTradeInfo;
+export type AssetPairsResponse = PaginatedCollection<AssetPairsItem>;
+
+export interface AssetPairsItem {
+    assetDataA: Asset;
+    assetDataB: Asset;
 }
 
-export interface TokenTradeInfo {
-    address: string;
+export interface Asset {
+    assetData: string;
     minAmount: BigNumber;
     maxAmount: BigNumber;
     precision: number;
 }
 
 export interface OrdersRequestOpts {
-    exchangeContractAddress?: string;
-    tokenAddress?: string;
-    makerTokenAddress?: string;
-    takerTokenAddress?: string;
-    maker?: string;
-    taker?: string;
-    trader?: string;
-    feeRecipient?: string;
+    makerAssetProxyId?: string;
+    takerAssetProxyId?: string;
+    makerAssetAddress?: string;
+    takerAssetAddress?: string;
+    exchangeAddress?: string;
+    senderAddress?: string;
+    makerAssetData?: string;
+    takerAssetData?: string;
+    makerAddress?: string;
+    takerAddress?: string;
+    traderAddress?: string;
+    feeRecipientAddress?: string;
 }
 
 export interface OrderbookRequest {
-    baseTokenAddress: string;
-    quoteTokenAddress: string;
+    baseAssetData: string;
+    quoteAssetData: string;
 }
 
 export interface OrderbookResponse {
-    bids: SignedOrder[];
-    asks: SignedOrder[];
+    bids: PaginatedCollection<APIOrder>;
+    asks: PaginatedCollection<APIOrder>;
+}
+
+export interface PaginatedCollection<T> {
+    total: number;
+    page: number;
+    perPage: number;
+    records: T[];
 }
 
-export interface FeesRequest {
-    exchangeContractAddress: string;
-    maker: string;
-    taker: string;
-    makerTokenAddress: string;
-    takerTokenAddress: string;
-    makerTokenAmount: BigNumber;
-    takerTokenAmount: BigNumber;
-    expirationUnixTimestampSec: BigNumber;
-    salt: BigNumber;
+export interface OrderConfigRequest {
+    makerAddress: string;
+    takerAddress: string;
+    makerAssetAmount: string;
+    takerAssetAmount: string;
+    makerAssetData: string;
+    takerAssetData: string;
+    exchangeAddress: string;
+    expirationTimeSeconds: string;
 }
 
-export interface FeesResponse {
-    feeRecipient: string;
+export interface OrderConfigResponse {
     makerFee: BigNumber;
     takerFee: BigNumber;
+    feeRecipientAddress: string;
+    senderAddress: string;
+}
+
+export type FeeRecipientsResponse = PaginatedCollection<string>;
+
+export interface RequestOpts {
+    networkId?: number;
 }
 
 export interface PagedRequestOpts {
diff --git a/packages/connect/src/utils/assert.ts b/packages/connect/src/utils/assert.ts
index a0fd12fbd..3d8f1c799 100644
--- a/packages/connect/src/utils/assert.ts
+++ b/packages/connect/src/utils/assert.ts
@@ -10,15 +10,14 @@ import * as _ from 'lodash';
 
 export const assert = {
     ...sharedAssert,
-    isOrderbookChannelSubscriptionOpts(variableName: string, subscriptionOpts: any): void {
+    isOrdersChannelSubscriptionOpts(variableName: string, subscriptionOpts: any): void {
         sharedAssert.doesConformToSchema(
             variableName,
             subscriptionOpts,
-            schemas.relayerApiOrderbookChannelSubscribePayload,
+            schemas.relayerApiOrdersChannelSubscribePayload,
         );
     },
-    isOrderbookChannelHandler(variableName: string, handler: any): void {
-        sharedAssert.isFunction(`${variableName}.onSnapshot`, _.get(handler, 'onSnapshot'));
+    isOrdersChannelHandler(variableName: string, handler: any): void {
         sharedAssert.isFunction(`${variableName}.onUpdate`, _.get(handler, 'onUpdate'));
         sharedAssert.isFunction(`${variableName}.onError`, _.get(handler, 'onError'));
         sharedAssert.isFunction(`${variableName}.onClose`, _.get(handler, 'onClose'));
diff --git a/packages/connect/src/utils/orderbook_channel_message_parser.ts b/packages/connect/src/utils/orderbook_channel_message_parser.ts
deleted file mode 100644
index 593288078..000000000
--- a/packages/connect/src/utils/orderbook_channel_message_parser.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-import { assert } from '@0xproject/assert';
-import { schemas } from '@0xproject/json-schemas';
-import * as _ from 'lodash';
-
-import { OrderbookChannelMessage, OrderbookChannelMessageTypes } from '../types';
-
-import { relayerResponseJsonParsers } from './relayer_response_json_parsers';
-
-export const orderbookChannelMessageParser = {
-    parse(utf8Data: string): OrderbookChannelMessage {
-        // parse the message
-        const messageObj = JSON.parse(utf8Data);
-        // ensure we have a type parameter to switch on
-        const type: string = _.get(messageObj, 'type');
-        assert.assert(!_.isUndefined(type), `Message is missing a type parameter: ${utf8Data}`);
-        assert.isString('type', type);
-        // ensure we have a request id for the resulting message
-        const requestId: number = _.get(messageObj, 'requestId');
-        assert.assert(!_.isUndefined(requestId), `Message is missing a requestId parameter: ${utf8Data}`);
-        assert.isNumber('requestId', requestId);
-        switch (type) {
-            case OrderbookChannelMessageTypes.Snapshot: {
-                assert.doesConformToSchema('message', messageObj, schemas.relayerApiOrderbookChannelSnapshotSchema);
-                const orderbookJson = messageObj.payload;
-                const orderbook = relayerResponseJsonParsers.parseOrderbookResponseJson(orderbookJson);
-                return _.assign(messageObj, { payload: orderbook });
-            }
-            case OrderbookChannelMessageTypes.Update: {
-                assert.doesConformToSchema('message', messageObj, schemas.relayerApiOrderbookChannelUpdateSchema);
-                const orderJson = messageObj.payload;
-                const order = relayerResponseJsonParsers.parseOrderJson(orderJson);
-                return _.assign(messageObj, { payload: order });
-            }
-            default: {
-                return {
-                    type: OrderbookChannelMessageTypes.Unknown,
-                    requestId,
-                    payload: undefined,
-                };
-            }
-        }
-    },
-};
diff --git a/packages/connect/src/utils/orders_channel_message_parser.ts b/packages/connect/src/utils/orders_channel_message_parser.ts
new file mode 100644
index 000000000..1b6cda17b
--- /dev/null
+++ b/packages/connect/src/utils/orders_channel_message_parser.ts
@@ -0,0 +1,37 @@
+import { assert } from '@0xproject/assert';
+import { schemas } from '@0xproject/json-schemas';
+import * as _ from 'lodash';
+
+import { OrdersChannelMessage, OrdersChannelMessageTypes } from '../types';
+
+import { relayerResponseJsonParsers } from './relayer_response_json_parsers';
+
+export const ordersChannelMessageParser = {
+    parse(utf8Data: string): OrdersChannelMessage {
+        // parse the message
+        const messageObj = JSON.parse(utf8Data);
+        // ensure we have a type parameter to switch on
+        const type: string = _.get(messageObj, 'type');
+        assert.assert(!_.isUndefined(type), `Message is missing a type parameter: ${utf8Data}`);
+        assert.isString('type', type);
+        // ensure we have a request id for the resulting message
+        const requestId: string = _.get(messageObj, 'requestId');
+        assert.assert(!_.isUndefined(requestId), `Message is missing a requestId parameter: ${utf8Data}`);
+        assert.isString('requestId', requestId);
+        switch (type) {
+            case OrdersChannelMessageTypes.Update: {
+                assert.doesConformToSchema('message', messageObj, schemas.relayerApiOrdersChannelUpdateSchema);
+                const ordersJson = messageObj.payload;
+                const orders = relayerResponseJsonParsers.parseAPIOrdersJson(ordersJson);
+                return _.assign(messageObj, { payload: orders });
+            }
+            default: {
+                return {
+                    type: OrdersChannelMessageTypes.Unknown,
+                    requestId,
+                    payload: undefined,
+                };
+            }
+        }
+    },
+};
diff --git a/packages/connect/src/utils/relayer_response_json_parsers.ts b/packages/connect/src/utils/relayer_response_json_parsers.ts
index ccae8b115..ebd877b70 100644
--- a/packages/connect/src/utils/relayer_response_json_parsers.ts
+++ b/packages/connect/src/utils/relayer_response_json_parsers.ts
@@ -1,37 +1,49 @@
 import { assert } from '@0xproject/assert';
 import { schemas } from '@0xproject/json-schemas';
-import { SignedOrder } from '@0xproject/types';
 
-import { FeesResponse, OrderbookResponse, TokenPairsItem } from '../types';
+import {
+    APIOrder,
+    AssetPairsItem,
+    AssetPairsResponse,
+    OrderbookResponse,
+    OrderConfigResponse,
+    OrdersResponse,
+} from '../types';
 
 import { typeConverters } from './type_converters';
 
 export const relayerResponseJsonParsers = {
-    parseTokenPairsJson(json: any): TokenPairsItem[] {
-        assert.doesConformToSchema('tokenPairs', json, schemas.relayerApiTokenPairsResponseSchema);
-        return json.map((tokenPair: any) => {
-            return typeConverters.convertStringsFieldsToBigNumbers(tokenPair, [
-                'tokenA.minAmount',
-                'tokenA.maxAmount',
-                'tokenB.minAmount',
-                'tokenB.maxAmount',
+    parseAssetDataPairsJson(json: any): AssetPairsResponse {
+        assert.doesConformToSchema('assetDataPairsResponse', json, schemas.relayerApiAssetDataPairsResponseSchema);
+        return { ...json, records: relayerResponseJsonParsers.parseAssetPairsItemsJson(json.records) };
+    },
+    parseAssetPairsItemsJson(json: any): AssetPairsItem[] {
+        return json.map((assetDataPair: any) => {
+            return typeConverters.convertStringsFieldsToBigNumbers(assetDataPair, [
+                'assetDataA.minAmount',
+                'assetDataA.maxAmount',
+                'assetDataB.minAmount',
+                'assetDataB.maxAmount',
             ]);
         });
     },
-    parseOrdersJson(json: any): SignedOrder[] {
-        assert.doesConformToSchema('orders', json, schemas.signedOrdersSchema);
-        return json.map((order: object) => typeConverters.convertOrderStringFieldsToBigNumber(order));
+    parseOrdersJson(json: any): OrdersResponse {
+        assert.doesConformToSchema('relayerApiOrdersResponse', json, schemas.relayerApiOrdersResponseSchema);
+        return { ...json, records: relayerResponseJsonParsers.parseAPIOrdersJson(json.records) };
+    },
+    parseAPIOrdersJson(json: any): APIOrder[] {
+        return json.map(relayerResponseJsonParsers.parseAPIOrderJson.bind(relayerResponseJsonParsers));
     },
-    parseOrderJson(json: any): SignedOrder {
-        assert.doesConformToSchema('order', json, schemas.signedOrderSchema);
-        return typeConverters.convertOrderStringFieldsToBigNumber(json);
+    parseAPIOrderJson(json: any): APIOrder {
+        assert.doesConformToSchema('relayerApiOrder', json, schemas.relayerApiOrderSchema);
+        return typeConverters.convertAPIOrderStringFieldsToBigNumber(json);
     },
     parseOrderbookResponseJson(json: any): OrderbookResponse {
-        assert.doesConformToSchema('orderBook', json, schemas.relayerApiOrderBookResponseSchema);
+        assert.doesConformToSchema('orderBookResponse', json, schemas.relayerApiOrderbookResponseSchema);
         return typeConverters.convertOrderbookStringFieldsToBigNumber(json);
     },
-    parseFeesResponseJson(json: any): FeesResponse {
-        assert.doesConformToSchema('fees', json, schemas.relayerApiFeesResponseSchema);
+    parseOrderConfigResponseJson(json: any): OrderConfigResponse {
+        assert.doesConformToSchema('orderConfigResponse', json, schemas.relayerApiOrderConfigResponseSchema);
         return typeConverters.convertStringsFieldsToBigNumbers(json, ['makerFee', 'takerFee']);
     },
 };
diff --git a/packages/connect/src/utils/type_converters.ts b/packages/connect/src/utils/type_converters.ts
index 210d452b9..4b211a0b2 100644
--- a/packages/connect/src/utils/type_converters.ts
+++ b/packages/connect/src/utils/type_converters.ts
@@ -1,29 +1,47 @@
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 
+import { APIOrder } from '../types';
+
 export const typeConverters = {
     convertOrderbookStringFieldsToBigNumber(orderbook: any): any {
         const bids = _.get(orderbook, 'bids', []);
         const asks = _.get(orderbook, 'asks', []);
+        const convertedBids = {
+            ...bids,
+            records: bids.records.map((order: any) => typeConverters.convertAPIOrderStringFieldsToBigNumber(order)),
+        };
+        const convertedAsks = {
+            ...asks,
+            records: asks.records.map((order: any) => typeConverters.convertAPIOrderStringFieldsToBigNumber(order)),
+        };
         return {
-            bids: bids.map((order: any) => typeConverters.convertOrderStringFieldsToBigNumber(order)),
-            asks: asks.map((order: any) => typeConverters.convertOrderStringFieldsToBigNumber(order)),
+            bids: convertedBids,
+            asks: convertedAsks,
         };
     },
+    convertAPIOrderStringFieldsToBigNumber(apiOrder: any): APIOrder {
+        return { ...apiOrder, order: typeConverters.convertOrderStringFieldsToBigNumber(apiOrder.order) };
+    },
     convertOrderStringFieldsToBigNumber(order: any): any {
         return typeConverters.convertStringsFieldsToBigNumbers(order, [
-            'makerTokenAmount',
-            'takerTokenAmount',
+            'makerAssetAmount',
+            'takerAssetAmount',
             'makerFee',
             'takerFee',
-            'expirationUnixTimestampSec',
+            'expirationTimeSeconds',
             'salt',
         ]);
     },
     convertStringsFieldsToBigNumbers(obj: any, fields: string[]): any {
         const result = _.assign({}, obj);
         _.each(fields, field => {
-            _.update(result, field, (value: string) => new BigNumber(value));
+            _.update(result, field, (value: string) => {
+                if (_.isUndefined(value)) {
+                    throw new Error(`Could not find field '${field}' while converting string fields to BigNumber.`);
+                }
+                return new BigNumber(value);
+            });
         });
         return result;
     },
diff --git a/packages/connect/src/ws_orderbook_channel.ts b/packages/connect/src/ws_orders_channel.ts
index fa9f5e37f..cde4acbc3 100644
--- a/packages/connect/src/ws_orderbook_channel.ts
+++ b/packages/connect/src/ws_orders_channel.ts
@@ -1,32 +1,32 @@
 import * as _ from 'lodash';
+import { v4 as uuid } from 'uuid';
 import * as WebSocket from 'websocket';
 
-import {
-    OrderbookChannel,
-    OrderbookChannelHandler,
-    OrderbookChannelMessageTypes,
-    OrderbookChannelSubscriptionOpts,
-} from './types';
+import { OrdersChannel, OrdersChannelHandler, OrdersChannelMessageTypes, OrdersChannelSubscriptionOpts } from './types';
 import { assert } from './utils/assert';
-import { orderbookChannelMessageParser } from './utils/orderbook_channel_message_parser';
+import { ordersChannelMessageParser } from './utils/orders_channel_message_parser';
+
+export interface OrdersChannelSubscriptionOptsMap {
+    [key: string]: OrdersChannelSubscriptionOpts;
+}
 
 /**
  * This class includes all the functionality related to interacting with a websocket endpoint
  * that implements the standard relayer API v0
  */
-export class WebSocketOrderbookChannel implements OrderbookChannel {
+export class WebSocketOrdersChannel implements OrdersChannel {
     private readonly _client: WebSocket.w3cwebsocket;
-    private readonly _handler: OrderbookChannelHandler;
-    private readonly _subscriptionOptsList: OrderbookChannelSubscriptionOpts[] = [];
+    private readonly _handler: OrdersChannelHandler;
+    private readonly _subscriptionOptsMap: OrdersChannelSubscriptionOptsMap = {};
     /**
-     * Instantiates a new WebSocketOrderbookChannel instance
+     * Instantiates a new WebSocketOrdersChannel instance
      * @param   client               A WebSocket client
-     * @param   handler              An OrderbookChannelHandler instance that responds to various
+     * @param   handler              An OrdersChannelHandler instance that responds to various
      *                               channel updates
-     * @return  An instance of WebSocketOrderbookChannel
+     * @return  An instance of WebSocketOrdersChannel
      */
-    constructor(client: WebSocket.w3cwebsocket, handler: OrderbookChannelHandler) {
-        assert.isOrderbookChannelHandler('handler', handler);
+    constructor(client: WebSocket.w3cwebsocket, handler: OrdersChannelHandler) {
+        assert.isOrdersChannelHandler('handler', handler);
         // set private members
         this._client = client;
         this._handler = handler;
@@ -43,18 +43,18 @@ export class WebSocketOrderbookChannel implements OrderbookChannel {
     }
     /**
      * Subscribe to orderbook snapshots and updates from the websocket
-     * @param   subscriptionOpts     An OrderbookChannelSubscriptionOpts instance describing which
-     *                               token pair to subscribe to
+     * @param   subscriptionOpts     An OrdersChannelSubscriptionOpts instance describing which
+     *                               assetData pair to subscribe to
      */
-    public subscribe(subscriptionOpts: OrderbookChannelSubscriptionOpts): void {
-        assert.isOrderbookChannelSubscriptionOpts('subscriptionOpts', subscriptionOpts);
+    public subscribe(subscriptionOpts: OrdersChannelSubscriptionOpts): void {
+        assert.isOrdersChannelSubscriptionOpts('subscriptionOpts', subscriptionOpts);
         assert.assert(this._client.readyState === WebSocket.w3cwebsocket.OPEN, 'WebSocket connection is closed');
-        this._subscriptionOptsList.push(subscriptionOpts);
-        // TODO: update requestId management to use UUIDs for v2
+        const requestId = uuid();
+        this._subscriptionOptsMap[requestId] = subscriptionOpts;
         const subscribeMessage = {
             type: 'subscribe',
-            channel: 'orderbook',
-            requestId: this._subscriptionOptsList.length - 1,
+            channel: 'orders',
+            requestId,
             payload: subscriptionOpts,
         };
         this._client.send(JSON.stringify(subscribeMessage));
@@ -72,8 +72,8 @@ export class WebSocketOrderbookChannel implements OrderbookChannel {
         }
         try {
             const data = message.data;
-            const parserResult = orderbookChannelMessageParser.parse(data);
-            const subscriptionOpts = this._subscriptionOptsList[parserResult.requestId];
+            const parserResult = ordersChannelMessageParser.parse(data);
+            const subscriptionOpts = this._subscriptionOptsMap[parserResult.requestId];
             if (_.isUndefined(subscriptionOpts)) {
                 this._handler.onError(
                     this,
@@ -82,11 +82,7 @@ export class WebSocketOrderbookChannel implements OrderbookChannel {
                 return;
             }
             switch (parserResult.type) {
-                case OrderbookChannelMessageTypes.Snapshot: {
-                    this._handler.onSnapshot(this, subscriptionOpts, parserResult.payload);
-                    break;
-                }
-                case OrderbookChannelMessageTypes.Update: {
+                case OrdersChannelMessageTypes.Update: {
                     this._handler.onUpdate(this, subscriptionOpts, parserResult.payload);
                     break;
                 }
diff --git a/packages/connect/test/fixtures/standard_relayer_api/asset_pairs.json b/packages/connect/test/fixtures/standard_relayer_api/asset_pairs.json
new file mode 100644
index 000000000..603e9f67e
--- /dev/null
+++ b/packages/connect/test/fixtures/standard_relayer_api/asset_pairs.json
@@ -0,0 +1,21 @@
+{
+    "total": 43,
+    "page": 1,
+    "perPage": 100,
+    "records": [
+        {
+            "assetDataA": {
+                "minAmount": "0",
+                "maxAmount": "10000000000000000000",
+                "precision": 5,
+                "assetData": "0xf47261b04c32345ced77393b3530b1eed0f346429d"
+            },
+            "assetDataB": {
+                "minAmount": "0",
+                "maxAmount": "50000000000000000000",
+                "precision": 5,
+                "assetData": "0x0257179264389b814a946f3e92105513705ca6b990"
+            }
+        }
+    ]
+}
diff --git a/packages/connect/test/fixtures/standard_relayer_api/asset_pairs.ts b/packages/connect/test/fixtures/standard_relayer_api/asset_pairs.ts
new file mode 100644
index 000000000..5ce703317
--- /dev/null
+++ b/packages/connect/test/fixtures/standard_relayer_api/asset_pairs.ts
@@ -0,0 +1,25 @@
+import { BigNumber } from '@0xproject/utils';
+
+import { AssetPairsResponse } from '../../../src/types';
+
+export const assetDataPairsResponse: AssetPairsResponse = {
+    total: 43,
+    page: 1,
+    perPage: 100,
+    records: [
+        {
+            assetDataA: {
+                minAmount: new BigNumber('0'),
+                maxAmount: new BigNumber('10000000000000000000'),
+                precision: 5,
+                assetData: '0xf47261b04c32345ced77393b3530b1eed0f346429d',
+            },
+            assetDataB: {
+                minAmount: new BigNumber('0'),
+                maxAmount: new BigNumber('50000000000000000000'),
+                precision: 5,
+                assetData: '0x0257179264389b814a946f3e92105513705ca6b990',
+            },
+        },
+    ],
+};
diff --git a/packages/connect/test/fixtures/standard_relayer_api/fee_recipients.json b/packages/connect/test/fixtures/standard_relayer_api/fee_recipients.json
new file mode 100644
index 000000000..b1d570b03
--- /dev/null
+++ b/packages/connect/test/fixtures/standard_relayer_api/fee_recipients.json
@@ -0,0 +1,10 @@
+{
+    "total": 3,
+    "page": 1,
+    "perPage": 10,
+    "records": [
+        "0x6ec92694ea172ebc430c30fa31de87620967a082",
+        "0x9e56625509c2f60af937f23b7b532600390e8c8b",
+        "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32"
+    ]
+}
diff --git a/packages/connect/test/fixtures/standard_relayer_api/fee_recipients.ts b/packages/connect/test/fixtures/standard_relayer_api/fee_recipients.ts
new file mode 100644
index 000000000..e17ffe7a8
--- /dev/null
+++ b/packages/connect/test/fixtures/standard_relayer_api/fee_recipients.ts
@@ -0,0 +1,12 @@
+import { FeeRecipientsResponse } from '../../../src/types';
+
+export const feeRecipientsResponse: FeeRecipientsResponse = {
+    total: 3,
+    page: 1,
+    perPage: 10,
+    records: [
+        '0x6ec92694ea172ebc430c30fa31de87620967a082',
+        '0x9e56625509c2f60af937f23b7b532600390e8c8b',
+        '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+    ],
+};
diff --git a/packages/connect/test/fixtures/standard_relayer_api/fees.json b/packages/connect/test/fixtures/standard_relayer_api/fees.json
deleted file mode 100644
index 483a74254..000000000
--- a/packages/connect/test/fixtures/standard_relayer_api/fees.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "feeRecipient": "0x323b5d4c32345ced77393b3530b1eed0f346429d",
-    "makerFee": "10000000000000000",
-    "takerFee": "30000000000000000"
-}
diff --git a/packages/connect/test/fixtures/standard_relayer_api/fees.ts b/packages/connect/test/fixtures/standard_relayer_api/fees.ts
deleted file mode 100644
index fecbaacff..000000000
--- a/packages/connect/test/fixtures/standard_relayer_api/fees.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { BigNumber } from '@0xproject/utils';
-
-import { FeesResponse } from '../../../src/types';
-
-export const feesResponse: FeesResponse = {
-    feeRecipient: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-    makerFee: new BigNumber('10000000000000000'),
-    takerFee: new BigNumber('30000000000000000'),
-};
diff --git a/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.json b/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.json
index e84954b0d..8d2cdd8ed 100644
--- a/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.json
+++ b/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.json
@@ -1,19 +1,19 @@
 {
-    "maker": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
-    "taker": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
-    "makerFee": "100000000000000",
-    "takerFee": "200000000000000",
-    "makerTokenAmount": "10000000000000000",
-    "takerTokenAmount": "20000000000000000",
-    "makerTokenAddress": "0x323b5d4c32345ced77393b3530b1eed0f346429d",
-    "takerTokenAddress": "0xef7fff64389b814a946f3e92105513705ca6b990",
-    "salt": "256",
-    "feeRecipient": "0xb046140686d052fff581f63f8136cce132e857da",
-    "exchangeContractAddress": "0x12459c951127e0c374ff9105dda097662a027093",
-    "expirationUnixTimestampSec": "42",
-    "ecSignature": {
-        "v": 27,
-        "r": "0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33",
-        "s": "0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254"
-    }
+    "order": {
+        "makerAddress": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
+        "takerAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+        "feeRecipientAddress": "0xb046140686d052fff581f63f8136cce132e857da",
+        "senderAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+        "makerAssetAmount": "10000000000000000",
+        "takerAssetAmount": "20000000000000000",
+        "makerFee": "100000000000000",
+        "takerFee": "200000000000000",
+        "expirationTimeSeconds": "1532560590",
+        "salt": "1532559225",
+        "makerAssetData": "0xf47261b04c32345ced77393b3530b1eed0f346429d",
+        "takerAssetData": "0x0257179264389b814a946f3e92105513705ca6b990",
+        "exchangeAddress": "0x12459c951127e0c374ff9105dda097662a027093",
+        "signature": "0x012761a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33"
+    },
+    "metaData": {}
 }
diff --git a/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.ts b/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.ts
index 5a03a2ff6..c8a669b3b 100644
--- a/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.ts
+++ b/packages/connect/test/fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.ts
@@ -1,21 +1,21 @@
 import { BigNumber } from '@0xproject/utils';
 
 export const orderResponse = {
-    maker: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
-    taker: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
-    makerFee: new BigNumber('100000000000000'),
-    takerFee: new BigNumber('200000000000000'),
-    makerTokenAmount: new BigNumber('10000000000000000'),
-    takerTokenAmount: new BigNumber('20000000000000000'),
-    makerTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-    takerTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
-    salt: new BigNumber('256'),
-    feeRecipient: '0xb046140686d052fff581f63f8136cce132e857da',
-    exchangeContractAddress: '0x12459c951127e0c374ff9105dda097662a027093',
-    expirationUnixTimestampSec: new BigNumber('42'),
-    ecSignature: {
-        v: 27,
-        r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
-        s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
+    order: {
+        makerAddress: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
+        takerAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+        feeRecipientAddress: '0xb046140686d052fff581f63f8136cce132e857da',
+        senderAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+        makerAssetAmount: new BigNumber('10000000000000000'),
+        takerAssetAmount: new BigNumber('20000000000000000'),
+        makerFee: new BigNumber('100000000000000'),
+        takerFee: new BigNumber('200000000000000'),
+        expirationTimeSeconds: new BigNumber('1532560590'),
+        salt: new BigNumber('1532559225'),
+        makerAssetData: '0xf47261b04c32345ced77393b3530b1eed0f346429d',
+        takerAssetData: '0x0257179264389b814a946f3e92105513705ca6b990',
+        exchangeAddress: '0x12459c951127e0c374ff9105dda097662a027093',
+        signature: '0x012761a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
     },
+    metaData: {},
 };
diff --git a/packages/connect/test/fixtures/standard_relayer_api/order_config.json b/packages/connect/test/fixtures/standard_relayer_api/order_config.json
new file mode 100644
index 000000000..39da91e6d
--- /dev/null
+++ b/packages/connect/test/fixtures/standard_relayer_api/order_config.json
@@ -0,0 +1,6 @@
+{
+    "senderAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+    "feeRecipientAddress": "0xb046140686d052fff581f63f8136cce132e857da",
+    "makerFee": "100000000000000",
+    "takerFee": "200000000000000"
+}
diff --git a/packages/connect/test/fixtures/standard_relayer_api/order_config.ts b/packages/connect/test/fixtures/standard_relayer_api/order_config.ts
new file mode 100644
index 000000000..36f01a009
--- /dev/null
+++ b/packages/connect/test/fixtures/standard_relayer_api/order_config.ts
@@ -0,0 +1,10 @@
+import { BigNumber } from '@0xproject/utils';
+
+import { OrderConfigResponse } from '../../../src/types';
+
+export const orderConfigResponse: OrderConfigResponse = {
+    senderAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+    feeRecipientAddress: '0xb046140686d052fff581f63f8136cce132e857da',
+    makerFee: new BigNumber('100000000000000'),
+    takerFee: new BigNumber('200000000000000'),
+};
diff --git a/packages/connect/test/fixtures/standard_relayer_api/orderbook.json b/packages/connect/test/fixtures/standard_relayer_api/orderbook.json
index 825be34c2..5206c2217 100644
--- a/packages/connect/test/fixtures/standard_relayer_api/orderbook.json
+++ b/packages/connect/test/fixtures/standard_relayer_api/orderbook.json
@@ -1,44 +1,54 @@
 {
-    "bids": [
-        {
-            "maker": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
-            "taker": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
-            "makerFee": "100000000000000",
-            "takerFee": "200000000000000",
-            "makerTokenAmount": "10000000000000000",
-            "takerTokenAmount": "20000000000000000",
-            "makerTokenAddress": "0x323b5d4c32345ced77393b3530b1eed0f346429d",
-            "takerTokenAddress": "0xef7fff64389b814a946f3e92105513705ca6b990",
-            "salt": "256",
-            "feeRecipient": "0xb046140686d052fff581f63f8136cce132e857da",
-            "exchangeContractAddress": "0x12459c951127e0c374ff9105dda097662a027093",
-            "expirationUnixTimestampSec": "42",
-            "ecSignature": {
-                "v": 27,
-                "r": "0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33",
-                "s": "0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254"
+    "bids": {
+        "total": 325,
+        "page": 2,
+        "perPage": 100,
+        "records": [
+            {
+                "order": {
+                    "makerAddress": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
+                    "takerAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+                    "feeRecipientAddress": "0xb046140686d052fff581f63f8136cce132e857da",
+                    "senderAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+                    "makerAssetAmount": "10000000000000000",
+                    "takerAssetAmount": "20000000000000000",
+                    "makerFee": "100000000000000",
+                    "takerFee": "200000000000000",
+                    "expirationTimeSeconds": "1532560590",
+                    "salt": "1532559225",
+                    "makerAssetData": "0xf47261b04c32345ced77393b3530b1eed0f346429d",
+                    "takerAssetData": "0x0257179264389b814a946f3e92105513705ca6b990",
+                    "exchangeAddress": "0x12459c951127e0c374ff9105dda097662a027093",
+                    "signature": "0x012761a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33"
+                },
+                "metaData": {}
             }
-        }
-    ],
-    "asks": [
-        {
-            "maker": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
-            "taker": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
-            "makerFee": "100000000000000",
-            "takerFee": "200000000000000",
-            "makerTokenAmount": "10000000000000000",
-            "takerTokenAmount": "20000000000000000",
-            "makerTokenAddress": "0x323b5d4c32345ced77393b3530b1eed0f346429d",
-            "takerTokenAddress": "0xef7fff64389b814a946f3e92105513705ca6b990",
-            "salt": "256",
-            "feeRecipient": "0xb046140686d052fff581f63f8136cce132e857da",
-            "exchangeContractAddress": "0x12459c951127e0c374ff9105dda097662a027093",
-            "expirationUnixTimestampSec": "42",
-            "ecSignature": {
-                "v": 27,
-                "r": "0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33",
-                "s": "0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254"
+        ]
+    },
+    "asks": {
+        "total": 500,
+        "page": 2,
+        "perPage": 100,
+        "records": [
+            {
+                "order": {
+                    "makerAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+                    "takerAddress": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
+                    "feeRecipientAddress": "0xb046140686d052fff581f63f8136cce132e857da",
+                    "senderAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+                    "makerAssetAmount": "20000000000000000",
+                    "takerAssetAmount": "10000000000000000",
+                    "makerFee": "200000000000000",
+                    "takerFee": "100000000000000",
+                    "expirationTimeSeconds": "1532560590",
+                    "salt": "1532559225",
+                    "makerAssetData": "0x0257179264389b814a946f3e92105513705ca6b990",
+                    "takerAssetData": "0xf47261b04c32345ced77393b3530b1eed0f346429d",
+                    "exchangeAddress": "0x12459c951127e0c374ff9105dda097662a027093",
+                    "signature": "0x013842a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b3518891"
+                },
+                "metaData": {}
             }
-        }
-    ]
+        ]
+    }
 }
diff --git a/packages/connect/test/fixtures/standard_relayer_api/orderbook.ts b/packages/connect/test/fixtures/standard_relayer_api/orderbook.ts
index 6684ac2e5..d5f39a51f 100644
--- a/packages/connect/test/fixtures/standard_relayer_api/orderbook.ts
+++ b/packages/connect/test/fixtures/standard_relayer_api/orderbook.ts
@@ -1,46 +1,58 @@
 import { BigNumber } from '@0xproject/utils';
 
-export const orderbookResponse = {
-    bids: [
-        {
-            maker: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
-            taker: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
-            makerFee: new BigNumber('100000000000000'),
-            takerFee: new BigNumber('200000000000000'),
-            makerTokenAmount: new BigNumber('10000000000000000'),
-            takerTokenAmount: new BigNumber('20000000000000000'),
-            makerTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-            takerTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
-            salt: new BigNumber('256'),
-            feeRecipient: '0xb046140686d052fff581f63f8136cce132e857da',
-            exchangeContractAddress: '0x12459c951127e0c374ff9105dda097662a027093',
-            expirationUnixTimestampSec: new BigNumber('42'),
-            ecSignature: {
-                v: 27,
-                r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
-                s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
+import { OrderbookResponse } from '../../../src/types';
+
+export const orderbookResponse: OrderbookResponse = {
+    bids: {
+        total: 325,
+        page: 2,
+        perPage: 100,
+        records: [
+            {
+                order: {
+                    makerAddress: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
+                    takerAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+                    feeRecipientAddress: '0xb046140686d052fff581f63f8136cce132e857da',
+                    senderAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+                    makerAssetAmount: new BigNumber('10000000000000000'),
+                    takerAssetAmount: new BigNumber('20000000000000000'),
+                    makerFee: new BigNumber('100000000000000'),
+                    takerFee: new BigNumber('200000000000000'),
+                    expirationTimeSeconds: new BigNumber('1532560590'),
+                    salt: new BigNumber('1532559225'),
+                    makerAssetData: '0xf47261b04c32345ced77393b3530b1eed0f346429d',
+                    takerAssetData: '0x0257179264389b814a946f3e92105513705ca6b990',
+                    exchangeAddress: '0x12459c951127e0c374ff9105dda097662a027093',
+                    signature: '0x012761a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
+                },
+                metaData: {},
             },
-        },
-    ],
-    asks: [
-        {
-            maker: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
-            taker: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
-            makerFee: new BigNumber('100000000000000'),
-            takerFee: new BigNumber('200000000000000'),
-            makerTokenAmount: new BigNumber('10000000000000000'),
-            takerTokenAmount: new BigNumber('20000000000000000'),
-            makerTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-            takerTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
-            salt: new BigNumber('256'),
-            feeRecipient: '0xb046140686d052fff581f63f8136cce132e857da',
-            exchangeContractAddress: '0x12459c951127e0c374ff9105dda097662a027093',
-            expirationUnixTimestampSec: new BigNumber('42'),
-            ecSignature: {
-                v: 27,
-                r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
-                s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
+        ],
+    },
+    asks: {
+        total: 500,
+        page: 2,
+        perPage: 100,
+        records: [
+            {
+                order: {
+                    makerAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+                    takerAddress: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
+                    feeRecipientAddress: '0xb046140686d052fff581f63f8136cce132e857da',
+                    senderAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+                    makerAssetAmount: new BigNumber('20000000000000000'),
+                    takerAssetAmount: new BigNumber('10000000000000000'),
+                    makerFee: new BigNumber('200000000000000'),
+                    takerFee: new BigNumber('100000000000000'),
+                    expirationTimeSeconds: new BigNumber('1532560590'),
+                    salt: new BigNumber('1532559225'),
+                    makerAssetData: '0x0257179264389b814a946f3e92105513705ca6b990',
+                    takerAssetData: '0xf47261b04c32345ced77393b3530b1eed0f346429d',
+                    exchangeAddress: '0x12459c951127e0c374ff9105dda097662a027093',
+                    signature: '0x013842a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b3518891',
+                },
+                metaData: {},
             },
-        },
-    ],
+        ],
+    },
 };
diff --git a/packages/connect/test/fixtures/standard_relayer_api/orders.json b/packages/connect/test/fixtures/standard_relayer_api/orders.json
index cfa780dc4..683612071 100644
--- a/packages/connect/test/fixtures/standard_relayer_api/orders.json
+++ b/packages/connect/test/fixtures/standard_relayer_api/orders.json
@@ -1,21 +1,26 @@
-[
-    {
-        "maker": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
-        "taker": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
-        "makerFee": "100000000000000",
-        "takerFee": "200000000000000",
-        "makerTokenAmount": "10000000000000000",
-        "takerTokenAmount": "20000000000000000",
-        "makerTokenAddress": "0x323b5d4c32345ced77393b3530b1eed0f346429d",
-        "takerTokenAddress": "0xef7fff64389b814a946f3e92105513705ca6b990",
-        "salt": "256",
-        "feeRecipient": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
-        "exchangeContractAddress": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
-        "expirationUnixTimestampSec": "42",
-        "ecSignature": {
-            "v": 27,
-            "r": "0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33",
-            "s": "0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254"
+{
+    "total": 984,
+    "page": 1,
+    "perPage": 100,
+    "records": [
+        {
+            "order": {
+                "makerAddress": "0x9e56625509c2f60af937f23b7b532600390e8c8b",
+                "takerAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+                "feeRecipientAddress": "0xb046140686d052fff581f63f8136cce132e857da",
+                "senderAddress": "0xa2b31dacf30a9c50ca473337c01d8a201ae33e32",
+                "makerAssetAmount": "10000000000000000",
+                "takerAssetAmount": "20000000000000000",
+                "makerFee": "100000000000000",
+                "takerFee": "200000000000000",
+                "expirationTimeSeconds": "1532560590",
+                "salt": "1532559225",
+                "makerAssetData": "0xf47261b04c32345ced77393b3530b1eed0f346429d",
+                "takerAssetData": "0x0257179264389b814a946f3e92105513705ca6b990",
+                "exchangeAddress": "0x12459c951127e0c374ff9105dda097662a027093",
+                "signature": "0x012761a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33"
+            },
+            "metaData": {}
         }
-    }
-]
+    ]
+}
diff --git a/packages/connect/test/fixtures/standard_relayer_api/orders.ts b/packages/connect/test/fixtures/standard_relayer_api/orders.ts
index 5044777bd..01f8974b8 100644
--- a/packages/connect/test/fixtures/standard_relayer_api/orders.ts
+++ b/packages/connect/test/fixtures/standard_relayer_api/orders.ts
@@ -1,23 +1,30 @@
 import { BigNumber } from '@0xproject/utils';
 
-export const ordersResponse = [
-    {
-        maker: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
-        taker: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
-        makerFee: new BigNumber('100000000000000'),
-        takerFee: new BigNumber('200000000000000'),
-        makerTokenAmount: new BigNumber('10000000000000000'),
-        takerTokenAmount: new BigNumber('20000000000000000'),
-        makerTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-        takerTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
-        salt: new BigNumber('256'),
-        feeRecipient: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
-        exchangeContractAddress: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
-        expirationUnixTimestampSec: new BigNumber('42'),
-        ecSignature: {
-            v: 27,
-            r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
-            s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
+import { OrdersResponse } from '../../../src/types';
+
+export const ordersResponse: OrdersResponse = {
+    total: 984,
+    page: 1,
+    perPage: 100,
+    records: [
+        {
+            order: {
+                makerAddress: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
+                takerAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+                feeRecipientAddress: '0xb046140686d052fff581f63f8136cce132e857da',
+                senderAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+                makerAssetAmount: new BigNumber('10000000000000000'),
+                takerAssetAmount: new BigNumber('20000000000000000'),
+                makerFee: new BigNumber('100000000000000'),
+                takerFee: new BigNumber('200000000000000'),
+                expirationTimeSeconds: new BigNumber('1532560590'),
+                salt: new BigNumber('1532559225'),
+                makerAssetData: '0xf47261b04c32345ced77393b3530b1eed0f346429d',
+                takerAssetData: '0x0257179264389b814a946f3e92105513705ca6b990',
+                exchangeAddress: '0x12459c951127e0c374ff9105dda097662a027093',
+                signature: '0x012761a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
+            },
+            metaData: {},
         },
-    },
-];
+    ],
+};
diff --git a/packages/connect/test/fixtures/standard_relayer_api/snapshot_orderbook_channel_message.ts b/packages/connect/test/fixtures/standard_relayer_api/snapshot_orderbook_channel_message.ts
deleted file mode 100644
index 1d7e67055..000000000
--- a/packages/connect/test/fixtures/standard_relayer_api/snapshot_orderbook_channel_message.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import * as orderbookJSON from './orderbook.json';
-
-const orderbookJsonString = JSON.stringify(orderbookJSON);
-
-export const snapshotOrderbookChannelMessage = `{
-    "type": "snapshot",
-    "channel": "orderbook",
-    "requestId": 1,
-    "payload": ${orderbookJsonString}
-}`;
-
-export const malformedSnapshotOrderbookChannelMessage = `{
-    "type": "snapshot",
-    "channel": "orderbook",
-    "requestId": 1,
-    "payload": {}
-}`;
diff --git a/packages/connect/test/fixtures/standard_relayer_api/token_pairs.json b/packages/connect/test/fixtures/standard_relayer_api/token_pairs.json
deleted file mode 100644
index 90f57a974..000000000
--- a/packages/connect/test/fixtures/standard_relayer_api/token_pairs.json
+++ /dev/null
@@ -1,16 +0,0 @@
-[
-    {
-        "tokenA": {
-            "address": "0x323b5d4c32345ced77393b3530b1eed0f346429d",
-            "minAmount": "0",
-            "maxAmount": "10000000000000000000",
-            "precision": 5
-        },
-        "tokenB": {
-            "address": "0xef7fff64389b814a946f3e92105513705ca6b990",
-            "minAmount": "0",
-            "maxAmount": "50000000000000000000",
-            "precision": 5
-        }
-    }
-]
diff --git a/packages/connect/test/fixtures/standard_relayer_api/token_pairs.ts b/packages/connect/test/fixtures/standard_relayer_api/token_pairs.ts
deleted file mode 100644
index f48b1e877..000000000
--- a/packages/connect/test/fixtures/standard_relayer_api/token_pairs.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import { BigNumber } from '@0xproject/utils';
-
-import { TokenPairsItem } from '../../../src/types';
-
-export const tokenPairsResponse: TokenPairsItem[] = [
-    {
-        tokenA: {
-            address: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-            minAmount: new BigNumber(0),
-            maxAmount: new BigNumber('10000000000000000000'),
-            precision: 5,
-        },
-        tokenB: {
-            address: '0xef7fff64389b814a946f3e92105513705ca6b990',
-            minAmount: new BigNumber(0),
-            maxAmount: new BigNumber('50000000000000000000'),
-            precision: 5,
-        },
-    },
-];
diff --git a/packages/connect/test/fixtures/standard_relayer_api/unknown_orderbook_channel_message.ts b/packages/connect/test/fixtures/standard_relayer_api/unknown_orders_channel_message.ts
index cbedff60e..b6c0cd50c 100644
--- a/packages/connect/test/fixtures/standard_relayer_api/unknown_orderbook_channel_message.ts
+++ b/packages/connect/test/fixtures/standard_relayer_api/unknown_orders_channel_message.ts
@@ -2,9 +2,9 @@ import * as orderResponseJSON from './order/0xabc67323774bdbd24d94f977fa9ac94a50
 
 const orderJSONString = JSON.stringify(orderResponseJSON);
 
-export const unknownOrderbookChannelMessage = `{
+export const unknownOrdersChannelMessage = `{
     "type": "superGoodUpdate",
     "channel": "orderbook",
-    "requestId": 1,
-    "payload": ${orderJSONString}
+    "requestId": "6ce8c5a6-5c46-4027-a44a-51831c77b8a1",
+    "payload": [${orderJSONString}]
 }`;
diff --git a/packages/connect/test/fixtures/standard_relayer_api/update_orderbook_channel_message.ts b/packages/connect/test/fixtures/standard_relayer_api/update_orderbook_channel_message.ts
deleted file mode 100644
index 0e2c7523b..000000000
--- a/packages/connect/test/fixtures/standard_relayer_api/update_orderbook_channel_message.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import * as orderResponseJSON from './order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.json';
-
-const orderJSONString = JSON.stringify(orderResponseJSON);
-
-export const updateOrderbookChannelMessage = `{
-    "type": "update",
-    "channel": "orderbook",
-    "requestId": 1,
-    "payload": ${orderJSONString}
-}`;
-
-export const malformedUpdateOrderbookChannelMessage = `{
-    "type": "update",
-    "channel": "orderbook",
-    "requestId": 1,
-    "payload": {}
-}`;
diff --git a/packages/connect/test/fixtures/standard_relayer_api/update_orders_channel_message.ts b/packages/connect/test/fixtures/standard_relayer_api/update_orders_channel_message.ts
new file mode 100644
index 000000000..c18a2c789
--- /dev/null
+++ b/packages/connect/test/fixtures/standard_relayer_api/update_orders_channel_message.ts
@@ -0,0 +1,17 @@
+import * as apiOrderJSON from './order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.json';
+
+const apiOrderJSONString = JSON.stringify(apiOrderJSON);
+
+export const updateOrdersChannelMessage = `{
+    "type": "update",
+    "channel": "orders",
+    "requestId": "5a1ce3a2-22b9-41e6-a615-68077512e9e2",
+    "payload": [${apiOrderJSONString}]
+}`;
+
+export const malformedUpdateOrdersChannelMessage = `{
+    "type": "update",
+    "channel": "orders",
+    "requestId": "4d8efcee-adde-4475-9601-f0b30962ca2b",
+    "payload": {}
+}`;
diff --git a/packages/connect/test/http_client_test.ts b/packages/connect/test/http_client_test.ts
index 311dc96e6..5b564e97b 100644
--- a/packages/connect/test/http_client_test.ts
+++ b/packages/connect/test/http_client_test.ts
@@ -1,4 +1,3 @@
-import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as chaiAsPromised from 'chai-as-promised';
 import * as dirtyChai from 'dirty-chai';
@@ -7,16 +6,18 @@ import 'mocha';
 
 import { HttpClient } from '../src/index';
 
-import { feesResponse } from './fixtures/standard_relayer_api/fees';
-import * as feesResponseJSON from './fixtures/standard_relayer_api/fees.json';
+import { assetDataPairsResponse } from './fixtures/standard_relayer_api/asset_pairs';
+import * as assetDataPairsResponseJSON from './fixtures/standard_relayer_api/asset_pairs.json';
+import { feeRecipientsResponse } from './fixtures/standard_relayer_api/fee_recipients';
+import * as feeRecipientsResponseJSON from './fixtures/standard_relayer_api/fee_recipients.json';
 import { orderResponse } from './fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f';
 import * as orderResponseJSON from './fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f.json';
+import { orderConfigResponse } from './fixtures/standard_relayer_api/order_config';
+import * as orderConfigResponseJSON from './fixtures/standard_relayer_api/order_config.json';
 import { orderbookResponse } from './fixtures/standard_relayer_api/orderbook';
 import * as orderbookJSON from './fixtures/standard_relayer_api/orderbook.json';
 import { ordersResponse } from './fixtures/standard_relayer_api/orders';
 import * as ordersResponseJSON from './fixtures/standard_relayer_api/orders.json';
-import { tokenPairsResponse } from './fixtures/standard_relayer_api/token_pairs';
-import * as tokenPairsResponseJSON from './fixtures/standard_relayer_api/token_pairs.json';
 
 chai.config.includeStack = true;
 chai.use(dirtyChai);
@@ -26,7 +27,7 @@ const expect = chai.expect;
 describe('HttpClient', () => {
     const relayUrl = 'https://example.com';
     const relayerClient = new HttpClient(relayUrl);
-    afterEach(() => {
+    beforeEach(() => {
         fetchMock.restore();
     });
     describe('#constructor', () => {
@@ -38,47 +39,47 @@ describe('HttpClient', () => {
             expect(sanitizedUrl).to.be.deep.equal(urlWithoutTrailingSlash);
         });
     });
-    describe('#getTokenPairsAsync', () => {
-        const url = `${relayUrl}/token_pairs`;
-        it('gets token pairs with default options when none are provided', async () => {
-            const urlWithQuery = `${url}?page=1&per_page=100`;
-            fetchMock.get(urlWithQuery, tokenPairsResponseJSON);
-            const tokenPairs = await relayerClient.getTokenPairsAsync();
-            expect(tokenPairs).to.be.deep.equal(tokenPairsResponse);
-        });
-        it('gets token pairs with specified request options', async () => {
-            const tokenAddress = '0x323b5d4c32345ced77393b3530b1eed0f346429d';
-            const tokenPairsRequestOpts = {
-                tokenA: tokenAddress,
+    describe('#getAssetPairsAsync', () => {
+        const url = `${relayUrl}/asset_pairs`;
+        it('gets assetData pairs with default options when none are provided', async () => {
+            fetchMock.get(url, assetDataPairsResponseJSON);
+            const assetDataPairs = await relayerClient.getAssetPairsAsync();
+            expect(assetDataPairs).to.be.deep.equal(assetDataPairsResponse);
+        });
+        it('gets assetData pairs with specified request options', async () => {
+            const assetData = '0xf47261b04c32345ced77393b3530b1eed0f346429d';
+            const assetPairsRequestOpts = {
+                assetDataA: assetData,
                 page: 3,
                 perPage: 50,
+                networkdId: 42,
             };
-            const urlWithQuery = `${url}?page=3&per_page=50&tokenA=${tokenAddress}`;
-            fetchMock.get(urlWithQuery, tokenPairsResponseJSON);
-            const tokenPairs = await relayerClient.getTokenPairsAsync(tokenPairsRequestOpts);
-            expect(tokenPairs).to.be.deep.equal(tokenPairsResponse);
+            const urlWithQuery = `${url}?assetDataA=${assetData}&networkdId=42&page=3&perPage=50`;
+            fetchMock.get(urlWithQuery, assetDataPairsResponseJSON);
+            const assetDataPairs = await relayerClient.getAssetPairsAsync(assetPairsRequestOpts);
+            expect(assetDataPairs).to.be.deep.equal(assetDataPairsResponse);
         });
         it('throws an error for invalid JSON response', async () => {
             fetchMock.get(url, { test: 'dummy' });
-            expect(relayerClient.getTokenPairsAsync()).to.be.rejected();
+            expect(relayerClient.getAssetPairsAsync()).to.be.rejected();
         });
     });
     describe('#getOrdersAsync', () => {
         const url = `${relayUrl}/orders`;
         it('gets orders with default options when none are provided', async () => {
-            const urlWithQuery = `${url}?page=1&per_page=100`;
-            fetchMock.get(urlWithQuery, ordersResponseJSON);
+            fetchMock.get(url, ordersResponseJSON);
             const orders = await relayerClient.getOrdersAsync();
             expect(orders).to.be.deep.equal(ordersResponse);
         });
         it('gets orders with specified request options', async () => {
-            const tokenAddress = '0x323b5d4c32345ced77393b3530b1eed0f346429d';
+            const assetDataAddress = '0x323b5d4c32345ced77393b3530b1eed0f346429d';
             const ordersRequest = {
-                tokenAddress,
+                assetDataAddress,
                 page: 3,
                 perPage: 50,
+                networkdId: 42,
             };
-            const urlWithQuery = `${url}?page=3&per_page=50&tokenAddress=${tokenAddress}`;
+            const urlWithQuery = `${url}?assetDataAddress=${assetDataAddress}&networkdId=42&page=3&perPage=50`;
             fetchMock.get(urlWithQuery, ordersResponseJSON);
             const orders = await relayerClient.getOrdersAsync(ordersRequest);
             expect(orders).to.be.deep.equal(ordersResponse);
@@ -103,26 +104,27 @@ describe('HttpClient', () => {
     });
     describe('#getOrderBookAsync', () => {
         const request = {
-            baseTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-            quoteTokenAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+            baseAssetData: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
+            quoteAssetData: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
         };
         const url = `${relayUrl}/orderbook`;
         it('gets orderbook with default page options when none are provided', async () => {
-            const urlWithQuery = `${url}?baseTokenAddress=${
-                request.baseTokenAddress
-            }&page=1&per_page=100&quoteTokenAddress=${request.quoteTokenAddress}`;
+            const urlWithQuery = `${url}?baseAssetData=${request.baseAssetData}&quoteAssetData=${
+                request.quoteAssetData
+            }`;
             fetchMock.get(urlWithQuery, orderbookJSON);
             const orderbook = await relayerClient.getOrderbookAsync(request);
             expect(orderbook).to.be.deep.equal(orderbookResponse);
         });
         it('gets orderbook with specified page options', async () => {
-            const urlWithQuery = `${url}?baseTokenAddress=${
-                request.baseTokenAddress
-            }&page=3&per_page=50&quoteTokenAddress=${request.quoteTokenAddress}`;
+            const urlWithQuery = `${url}?baseAssetData=${
+                request.baseAssetData
+            }&networkId=42&page=3&perPage=50&quoteAssetData=${request.quoteAssetData}`;
             fetchMock.get(urlWithQuery, orderbookJSON);
             const pagedRequestOptions = {
                 page: 3,
                 perPage: 50,
+                networkId: 42,
             };
             const orderbook = await relayerClient.getOrderbookAsync(request, pagedRequestOptions);
             expect(orderbook).to.be.deep.equal(orderbookResponse);
@@ -132,39 +134,59 @@ describe('HttpClient', () => {
             expect(relayerClient.getOrderbookAsync(request)).to.be.rejected();
         });
     });
-    describe('#getFeesAsync', () => {
+    describe('#getOrderConfigAsync', () => {
         const request = {
-            exchangeContractAddress: '0x12459c951127e0c374ff9105dda097662a027093',
-            maker: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
-            taker: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
-            makerTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-            takerTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
-            makerTokenAmount: new BigNumber('10000000000000000000'),
-            takerTokenAmount: new BigNumber('30000000000000000000'),
-            salt: new BigNumber('256'),
-            expirationUnixTimestampSec: new BigNumber('42'),
+            makerAddress: '0x9e56625509c2f60af937f23b7b532600390e8c8b',
+            takerAddress: '0xa2b31dacf30a9c50ca473337c01d8a201ae33e32',
+            makerAssetAmount: '10000000000000000',
+            takerAssetAmount: '20000000000000000',
+            expirationTimeSeconds: '1532560590',
+            makerAssetData: '0xf47261b04c32345ced77393b3530b1eed0f346429d',
+            takerAssetData: '0x0257179264389b814a946f3e92105513705ca6b990',
+            exchangeAddress: '0x12459c951127e0c374ff9105dda097662a027093',
         };
-        const url = `${relayUrl}/fees`;
-        it('gets fees', async () => {
-            fetchMock.post(url, feesResponseJSON);
-            const fees = await relayerClient.getFeesAsync(request);
-            expect(fees).to.be.deep.equal(feesResponse);
+        const url = `${relayUrl}/order_config`;
+        it('gets order config', async () => {
+            fetchMock.post(url, orderConfigResponseJSON);
+            const fees = await relayerClient.getOrderConfigAsync(request);
+            expect(fees).to.be.deep.equal(orderConfigResponse);
         });
         it('does not mutate input', async () => {
-            fetchMock.post(url, feesResponseJSON);
-            const makerTokenAmountBefore = new BigNumber(request.makerTokenAmount);
-            const takerTokenAmountBefore = new BigNumber(request.takerTokenAmount);
-            const saltBefore = new BigNumber(request.salt);
-            const expirationUnixTimestampSecBefore = new BigNumber(request.expirationUnixTimestampSec);
-            await relayerClient.getFeesAsync(request);
-            expect(makerTokenAmountBefore).to.be.deep.equal(request.makerTokenAmount);
-            expect(takerTokenAmountBefore).to.be.deep.equal(request.takerTokenAmount);
-            expect(saltBefore).to.be.deep.equal(request.salt);
-            expect(expirationUnixTimestampSecBefore).to.be.deep.equal(request.expirationUnixTimestampSec);
+            fetchMock.post(url, orderConfigResponseJSON);
+            const makerAssetAmountBefore = request.makerAssetAmount;
+            const takerAssetAmountBefore = request.takerAssetAmount;
+            const expirationTimeSecondsBefore = request.expirationTimeSeconds;
+            await relayerClient.getOrderConfigAsync(request);
+            expect(makerAssetAmountBefore).to.be.deep.equal(request.makerAssetAmount);
+            expect(takerAssetAmountBefore).to.be.deep.equal(request.takerAssetAmount);
+            expect(expirationTimeSecondsBefore).to.be.deep.equal(request.expirationTimeSeconds);
         });
         it('throws an error for invalid JSON response', async () => {
             fetchMock.post(url, { test: 'dummy' });
-            expect(relayerClient.getFeesAsync(request)).to.be.rejected();
+            expect(relayerClient.getOrderConfigAsync(request)).to.be.rejected();
+        });
+    });
+    describe('#getFeeRecipientsAsync', () => {
+        const url = `${relayUrl}/fee_recipients`;
+        it('gets fee recipients with default page options when none are provided', async () => {
+            fetchMock.get(url, feeRecipientsResponseJSON);
+            const feeRecipients = await relayerClient.getFeeRecipientsAsync();
+            expect(feeRecipients).to.be.deep.equal(feeRecipientsResponse);
+        });
+        it('gets fee recipient with specified page options', async () => {
+            const urlWithQuery = `${url}?networkId=42&page=3&perPage=50`;
+            fetchMock.get(urlWithQuery, feeRecipientsResponseJSON);
+            const pagedRequestOptions = {
+                page: 3,
+                perPage: 50,
+                networkId: 42,
+            };
+            const feeRecipients = await relayerClient.getFeeRecipientsAsync(pagedRequestOptions);
+            expect(feeRecipients).to.be.deep.equal(feeRecipientsResponse);
+        });
+        it('throws an error for invalid JSON response', async () => {
+            fetchMock.get(url, { test: 'dummy' });
+            expect(relayerClient.getFeeRecipientsAsync()).to.be.rejected();
         });
     });
 });
diff --git a/packages/connect/test/orderbook_channel_factory_test.ts b/packages/connect/test/orderbook_channel_factory_test.ts
deleted file mode 100644
index 2ce361bd2..000000000
--- a/packages/connect/test/orderbook_channel_factory_test.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-import * as chai from 'chai';
-import * as dirtyChai from 'dirty-chai';
-import * as _ from 'lodash';
-import 'mocha';
-
-import { orderbookChannelFactory } from '../src/orderbook_channel_factory';
-
-chai.config.includeStack = true;
-chai.use(dirtyChai);
-const expect = chai.expect;
-const emptyOrderbookChannelHandler = {
-    onSnapshot: () => {
-        _.noop();
-    },
-    onUpdate: () => {
-        _.noop();
-    },
-    onError: () => {
-        _.noop();
-    },
-    onClose: () => {
-        _.noop();
-    },
-};
-
-describe('orderbookChannelFactory', () => {
-    const websocketUrl = 'ws://localhost:8080';
-    describe('#createWebSocketOrderbookChannelAsync', () => {
-        it('throws when input is not a url', () => {
-            const badUrlInput = 54;
-            expect(
-                orderbookChannelFactory.createWebSocketOrderbookChannelAsync(
-                    badUrlInput as any,
-                    emptyOrderbookChannelHandler,
-                ),
-            ).to.be.rejected();
-        });
-        it('throws when handler has the incorrect members', () => {
-            const badHandlerInput = {};
-            expect(
-                orderbookChannelFactory.createWebSocketOrderbookChannelAsync(websocketUrl, badHandlerInput as any),
-            ).to.be.rejected();
-        });
-    });
-});
diff --git a/packages/connect/test/orderbook_channel_message_parsers_test.ts b/packages/connect/test/orderbook_channel_message_parsers_test.ts
deleted file mode 100644
index 3e1f44384..000000000
--- a/packages/connect/test/orderbook_channel_message_parsers_test.ts
+++ /dev/null
@@ -1,76 +0,0 @@
-import * as chai from 'chai';
-import * as dirtyChai from 'dirty-chai';
-import 'mocha';
-
-import { orderbookChannelMessageParser } from '../src/utils/orderbook_channel_message_parser';
-
-import { orderResponse } from './fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f';
-import { orderbookResponse } from './fixtures/standard_relayer_api/orderbook';
-import {
-    malformedSnapshotOrderbookChannelMessage,
-    snapshotOrderbookChannelMessage,
-} from './fixtures/standard_relayer_api/snapshot_orderbook_channel_message';
-import { unknownOrderbookChannelMessage } from './fixtures/standard_relayer_api/unknown_orderbook_channel_message';
-import {
-    malformedUpdateOrderbookChannelMessage,
-    updateOrderbookChannelMessage,
-} from './fixtures/standard_relayer_api/update_orderbook_channel_message';
-
-chai.config.includeStack = true;
-chai.use(dirtyChai);
-const expect = chai.expect;
-
-describe('orderbookChannelMessageParser', () => {
-    describe('#parser', () => {
-        it('parses snapshot messages', () => {
-            const snapshotMessage = orderbookChannelMessageParser.parse(snapshotOrderbookChannelMessage);
-            expect(snapshotMessage.type).to.be.equal('snapshot');
-            expect(snapshotMessage.payload).to.be.deep.equal(orderbookResponse);
-        });
-        it('parses update messages', () => {
-            const updateMessage = orderbookChannelMessageParser.parse(updateOrderbookChannelMessage);
-            expect(updateMessage.type).to.be.equal('update');
-            expect(updateMessage.payload).to.be.deep.equal(orderResponse);
-        });
-        it('returns unknown message for messages with unsupported types', () => {
-            const unknownMessage = orderbookChannelMessageParser.parse(unknownOrderbookChannelMessage);
-            expect(unknownMessage.type).to.be.equal('unknown');
-            expect(unknownMessage.payload).to.be.undefined();
-        });
-        it('throws when message does not include a type', () => {
-            const typelessMessage = `{
-                "channel": "orderbook",
-                "requestId": 1,
-                "payload": {}
-            }`;
-            const badCall = () => orderbookChannelMessageParser.parse(typelessMessage);
-            expect(badCall).throws(`Message is missing a type parameter: ${typelessMessage}`);
-        });
-        it('throws when type is not a string', () => {
-            const messageWithBadType = `{
-                "type": 1,
-                "channel": "orderbook",
-                "requestId": 1,
-                "payload": {}
-            }`;
-            const badCall = () => orderbookChannelMessageParser.parse(messageWithBadType);
-            expect(badCall).throws('Expected type to be of type string, encountered: 1');
-        });
-        it('throws when snapshot message has malformed payload', () => {
-            const badCall = () => orderbookChannelMessageParser.parse(malformedSnapshotOrderbookChannelMessage);
-            // tslint:disable-next-line:max-line-length
-            const errMsg =
-                'Validation errors: instance.payload requires property "bids", instance.payload requires property "asks"';
-            expect(badCall).throws(errMsg);
-        });
-        it('throws when update message has malformed payload', () => {
-            const badCall = () => orderbookChannelMessageParser.parse(malformedUpdateOrderbookChannelMessage);
-            expect(badCall).throws(/^Expected message to conform to schema/);
-        });
-        it('throws when input message is not valid JSON', () => {
-            const nonJsonString = 'h93b{sdfs9fsd f';
-            const badCall = () => orderbookChannelMessageParser.parse(nonJsonString);
-            expect(badCall).throws('Unexpected token h in JSON at position 0');
-        });
-    });
-});
diff --git a/packages/connect/test/orders_channel_factory_test.ts b/packages/connect/test/orders_channel_factory_test.ts
new file mode 100644
index 000000000..29aa87c65
--- /dev/null
+++ b/packages/connect/test/orders_channel_factory_test.ts
@@ -0,0 +1,34 @@
+import * as chai from 'chai';
+import * as dirtyChai from 'dirty-chai';
+import * as _ from 'lodash';
+
+import 'mocha';
+
+import { ordersChannelFactory } from '../src/orders_channel_factory';
+
+chai.config.includeStack = true;
+chai.use(dirtyChai);
+const expect = chai.expect;
+const emptyOrdersChannelHandler = {
+    onUpdate: _.noop.bind(_),
+    onError: _.noop.bind(_),
+    onClose: _.noop.bind(_),
+};
+
+describe('ordersChannelFactory', () => {
+    const websocketUrl = 'ws://localhost:8080';
+    describe('#createWebSocketOrdersChannelAsync', () => {
+        it('throws when input is not a url', () => {
+            const badUrlInput = 54;
+            expect(
+                ordersChannelFactory.createWebSocketOrdersChannelAsync(badUrlInput as any, emptyOrdersChannelHandler),
+            ).to.be.rejected();
+        });
+        it('throws when handler has the incorrect members', () => {
+            const badHandlerInput = {};
+            expect(
+                ordersChannelFactory.createWebSocketOrdersChannelAsync(websocketUrl, badHandlerInput as any),
+            ).to.be.rejected();
+        });
+    });
+});
diff --git a/packages/connect/test/orders_channel_message_parsers_test.ts b/packages/connect/test/orders_channel_message_parsers_test.ts
new file mode 100644
index 000000000..4d4a2d23f
--- /dev/null
+++ b/packages/connect/test/orders_channel_message_parsers_test.ts
@@ -0,0 +1,59 @@
+import * as chai from 'chai';
+import * as dirtyChai from 'dirty-chai';
+import 'mocha';
+
+import { ordersChannelMessageParser } from '../src/utils/orders_channel_message_parser';
+
+import { orderResponse } from './fixtures/standard_relayer_api/order/0xabc67323774bdbd24d94f977fa9ac94a50f016026fd13f42990861238897721f';
+import { unknownOrdersChannelMessage } from './fixtures/standard_relayer_api/unknown_orders_channel_message';
+import {
+    malformedUpdateOrdersChannelMessage,
+    updateOrdersChannelMessage,
+} from './fixtures/standard_relayer_api/update_orders_channel_message';
+
+chai.config.includeStack = true;
+chai.use(dirtyChai);
+const expect = chai.expect;
+
+describe('ordersChannelMessageParser', () => {
+    describe('#parser', () => {
+        it('parses update messages', () => {
+            const updateMessage = ordersChannelMessageParser.parse(updateOrdersChannelMessage);
+            expect(updateMessage.type).to.be.equal('update');
+            expect(updateMessage.payload).to.be.deep.equal([orderResponse]);
+        });
+        it('returns unknown message for messages with unsupported types', () => {
+            const unknownMessage = ordersChannelMessageParser.parse(unknownOrdersChannelMessage);
+            expect(unknownMessage.type).to.be.equal('unknown');
+            expect(unknownMessage.payload).to.be.undefined();
+        });
+        it('throws when message does not include a type', () => {
+            const typelessMessage = `{
+                "channel": "orders",
+                "requestId": "4d8efcee-adde-4475-9601-f0b30962ca2b",
+                "payload": []
+            }`;
+            const badCall = () => ordersChannelMessageParser.parse(typelessMessage);
+            expect(badCall).throws(`Message is missing a type parameter: ${typelessMessage}`);
+        });
+        it('throws when type is not a string', () => {
+            const messageWithBadType = `{
+                "type": 1,
+                "channel": "orders",
+                "requestId": "4d8efcee-adde-4475-9601-f0b30962ca2b",
+                "payload": []
+            }`;
+            const badCall = () => ordersChannelMessageParser.parse(messageWithBadType);
+            expect(badCall).throws('Expected type to be of type string, encountered: 1');
+        });
+        it('throws when update message has malformed payload', () => {
+            const badCall = () => ordersChannelMessageParser.parse(malformedUpdateOrdersChannelMessage);
+            expect(badCall).throws(/^Expected message to conform to schema/);
+        });
+        it('throws when input message is not valid JSON', () => {
+            const nonJsonString = 'h93b{sdfs9fsd f';
+            const badCall = () => ordersChannelMessageParser.parse(nonJsonString);
+            expect(badCall).throws('Unexpected token h in JSON at position 0');
+        });
+    });
+});
diff --git a/packages/connect/test/ws_orderbook_channel_test.ts b/packages/connect/test/ws_orderbook_channel_test.ts
deleted file mode 100644
index 5a63cbdcc..000000000
--- a/packages/connect/test/ws_orderbook_channel_test.ts
+++ /dev/null
@@ -1,59 +0,0 @@
-import * as chai from 'chai';
-import * as dirtyChai from 'dirty-chai';
-import * as _ from 'lodash';
-import 'mocha';
-import * as Sinon from 'sinon';
-import * as WebSocket from 'websocket';
-
-import { WebSocketOrderbookChannel } from '../src/ws_orderbook_channel';
-
-chai.config.includeStack = true;
-chai.use(dirtyChai);
-const expect = chai.expect;
-const emptyOrderbookChannelHandler = {
-    onSnapshot: () => {
-        _.noop();
-    },
-    onUpdate: () => {
-        _.noop();
-    },
-    onError: () => {
-        _.noop();
-    },
-    onClose: () => {
-        _.noop();
-    },
-};
-
-describe('WebSocketOrderbookChannel', () => {
-    const websocketUrl = 'ws://localhost:8080';
-    const openClient = new WebSocket.w3cwebsocket(websocketUrl);
-    Sinon.stub(openClient, 'readyState').get(() => WebSocket.w3cwebsocket.OPEN);
-    Sinon.stub(openClient, 'send').callsFake(_.noop.bind(_));
-    const openOrderbookChannel = new WebSocketOrderbookChannel(openClient, emptyOrderbookChannelHandler);
-    const subscriptionOpts = {
-        baseTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
-        quoteTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
-        snapshot: true,
-        limit: 100,
-    };
-    describe('#subscribe', () => {
-        it('throws when subscriptionOpts does not conform to schema', () => {
-            const badSubscribeCall = openOrderbookChannel.subscribe.bind(openOrderbookChannel, {});
-            expect(badSubscribeCall).throws(
-                'Expected subscriptionOpts to conform to schema /RelayerApiOrderbookChannelSubscribePayload\nEncountered: {}\nValidation errors: instance requires property "baseTokenAddress", instance requires property "quoteTokenAddress"',
-            );
-        });
-        it('does not throw when inputs are of correct types', () => {
-            const goodSubscribeCall = openOrderbookChannel.subscribe.bind(openOrderbookChannel, subscriptionOpts);
-            expect(goodSubscribeCall).to.not.throw();
-        });
-        it('throws when client is closed', () => {
-            const closedClient = new WebSocket.w3cwebsocket(websocketUrl);
-            Sinon.stub(closedClient, 'readyState').get(() => WebSocket.w3cwebsocket.CLOSED);
-            const closedOrderbookChannel = new WebSocketOrderbookChannel(closedClient, emptyOrderbookChannelHandler);
-            const badSubscribeCall = closedOrderbookChannel.subscribe.bind(closedOrderbookChannel, subscriptionOpts);
-            expect(badSubscribeCall).throws('WebSocket connection is closed');
-        });
-    });
-});
diff --git a/packages/connect/test/ws_orders_channel_test.ts b/packages/connect/test/ws_orders_channel_test.ts
new file mode 100644
index 000000000..df30bc41d
--- /dev/null
+++ b/packages/connect/test/ws_orders_channel_test.ts
@@ -0,0 +1,49 @@
+import * as chai from 'chai';
+import * as dirtyChai from 'dirty-chai';
+import * as _ from 'lodash';
+import 'mocha';
+import * as Sinon from 'sinon';
+import * as WebSocket from 'websocket';
+
+import { WebSocketOrdersChannel } from '../src/ws_orders_channel';
+
+chai.config.includeStack = true;
+chai.use(dirtyChai);
+const expect = chai.expect;
+const emptyOrdersChannelHandler = {
+    onUpdate: _.noop.bind(_),
+    onError: _.noop.bind(_),
+    onClose: _.noop.bind(_),
+};
+
+describe('WebSocketOrdersChannel', () => {
+    const websocketUrl = 'ws://localhost:8080';
+    const openClient = new WebSocket.w3cwebsocket(websocketUrl);
+    Sinon.stub(openClient, 'readyState').get(() => WebSocket.w3cwebsocket.OPEN);
+    Sinon.stub(openClient, 'send').callsFake(_.noop.bind(_));
+    const openOrdersChannel = new WebSocketOrdersChannel(openClient, emptyOrdersChannelHandler);
+    const subscriptionOpts = {
+        baseAssetData: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
+        quoteAssetData: '0xef7fff64389b814a946f3e92105513705ca6b990',
+        limit: 100,
+    };
+    describe('#subscribe', () => {
+        it('throws when subscriptionOpts does not conform to schema', () => {
+            const badSubscribeCall = openOrdersChannel.subscribe.bind(openOrdersChannel, {
+                makerAssetData: 5,
+            });
+            expect(badSubscribeCall).throws();
+        });
+        it('does not throw when inputs are of correct types', () => {
+            const goodSubscribeCall = openOrdersChannel.subscribe.bind(openOrdersChannel, subscriptionOpts);
+            expect(goodSubscribeCall).to.not.throw();
+        });
+        it('throws when client is closed', () => {
+            const closedClient = new WebSocket.w3cwebsocket(websocketUrl);
+            Sinon.stub(closedClient, 'readyState').get(() => WebSocket.w3cwebsocket.CLOSED);
+            const closedOrdersChannel = new WebSocketOrdersChannel(closedClient, emptyOrdersChannelHandler);
+            const badSubscribeCall = closedOrdersChannel.subscribe.bind(closedOrdersChannel, subscriptionOpts);
+            expect(badSubscribeCall).throws('WebSocket connection is closed');
+        });
+    });
+});