Refactor our protocol interfaces into @0x/contracts-interfaces

45 files changed, 283 insertions, 44 deletions

diff --git a/contracts/core/compiler.json b/contracts/core/compiler.json
index 7e527130a..239c25919 100644
--- a/contracts/core/compiler.json
+++ b/contracts/core/compiler.json
@@ -33,11 +33,7 @@
         "Exchange",
         "ExchangeWrapper",
         "Forwarder",
-        "IAssetData",
-        "IAssetProxy",
         "InvalidERC721Receiver",
-        "IValidator",
-        "IWallet",
         "MixinAuthorizable",
         "MultiAssetProxy",
         "OrderValidator",
diff --git a/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol b/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol
index ca5a64a26..d98136922 100644
--- a/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol
+++ b/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 
 
diff --git a/contracts/core/contracts/examples/Validator/Validator.sol b/contracts/core/contracts/examples/Validator/Validator.sol
index 72ed528ba..e488a9ca7 100644
--- a/contracts/core/contracts/examples/Validator/Validator.sol
+++ b/contracts/core/contracts/examples/Validator/Validator.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../protocol/Exchange/interfaces/IValidator.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IValidator.sol";
 
 
 contract Validator is 
diff --git a/contracts/core/contracts/examples/Wallet/Wallet.sol b/contracts/core/contracts/examples/Wallet/Wallet.sol
index 3738be841..8edc74eb3 100644
--- a/contracts/core/contracts/examples/Wallet/Wallet.sol
+++ b/contracts/core/contracts/examples/Wallet/Wallet.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../protocol/Exchange/interfaces/IWallet.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IWallet.sol";
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 
 
diff --git a/contracts/core/contracts/examples/Whitelist/Whitelist.sol b/contracts/core/contracts/examples/Whitelist/Whitelist.sol
index cfcddddd3..2a3d33738 100644
--- a/contracts/core/contracts/examples/Whitelist/Whitelist.sol
+++ b/contracts/core/contracts/examples/Whitelist/Whitelist.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
 
diff --git a/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol b/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol
index a40991ae7..90b6f4648 100644
--- a/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol
+++ b/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "../../tokens/ERC20Token/IERC20Token.sol";
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
diff --git a/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol b/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol
index 0f98ae595..00be0f1bd 100644
--- a/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol
+++ b/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
-import "../../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "../../../tokens/EtherToken/IEtherToken.sol";
 import "../../../tokens/ERC20Token/IERC20Token.sol";
 
diff --git a/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol b/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol
index 9e9e63e9b..78c31c8fc 100644
--- a/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol
+++ b/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "../../tokens/ERC20Token/IERC20Token.sol";
 import "../../tokens/ERC721Token/IERC721Token.sol";
diff --git a/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol b/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
index d63fb7f6d..fe77048ce 100644
--- a/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
+++ b/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../interfaces/IAuthorizable.sol";
+import "@0x/contracts-interfaces/contracts/protocol/AssetProxy/IAuthorizable.sol";
 
 
 contract MAuthorizable is
diff --git a/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol b/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
index 02aeb4a13..36ab39b45 100644
--- a/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
+++ b/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
@@ -20,7 +20,7 @@ pragma solidity 0.4.24;
 
 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
 import "./mixins/MAssetProxyDispatcher.sol";
-import "../AssetProxy/interfaces/IAssetProxy.sol";
+import "@0x/contracts-interfaces/contracts/protocol/AssetProxy/IAssetProxy.sol";
 
 
 contract MixinAssetProxyDispatcher is
diff --git a/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol b/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol
index 711535aa8..80b4c0755 100644
--- a/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol
+++ b/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol
@@ -22,8 +22,8 @@ import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
 import "./mixins/MSignatureValidator.sol";
 import "./mixins/MTransactions.sol";
-import "./interfaces/IWallet.sol";
-import "./interfaces/IValidator.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IWallet.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IValidator.sol";
 
 
 contract MixinSignatureValidator is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol b/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
index 0ddfca270..fe3d03326 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../interfaces/IAssetProxyDispatcher.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IAssetProxyDispatcher.sol";
 
 
 contract MAssetProxyDispatcher is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol b/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol
index 099bdcc33..215284900 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol
@@ -21,7 +21,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-import "../interfaces/IExchangeCore.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchangeCore.sol";
 
 
 contract MExchangeCore is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol b/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol
index bb285de03..1eb4be329 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol
@@ -20,7 +20,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-import "../interfaces/IMatchOrders.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IMatchOrders.sol";
 
 
 contract MMatchOrders is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol b/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
index 1fe88b908..a933976d1 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../interfaces/ISignatureValidator.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/ISignatureValidator.sol";
 
 
 contract MSignatureValidator is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol b/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol
index 4f61a4945..a6b0fdc85 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol
@@ -17,7 +17,7 @@
 */
 pragma solidity 0.4.24;
 
-import "../interfaces/ITransactions.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/ITransactions.sol";
 
 
 contract MTransactions is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol b/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
index 2d21bf057..101e7cb82 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
@@ -21,7 +21,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-import "../interfaces/IWrapperFunctions.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IWrapperFunctions.sol";
 
 
 contract MWrapperFunctions is 
diff --git a/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol b/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol
index 8e077e3e8..d8c65929d 100644
--- a/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol
+++ b/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol
@@ -21,7 +21,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "../../tokens/ERC20Token/ERC20Token.sol";
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 
 
diff --git a/contracts/core/package.json b/contracts/core/package.json
index 43fa9370e..be2214177 100644
--- a/contracts/core/package.json
+++ b/contracts/core/package.json
@@ -33,7 +33,7 @@
         "lint-contracts": "solhint contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|DutchAuction|ERC20Token|ERC20Proxy|ERC721Token|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|IAssetData|IAssetProxy|InvalidERC721Receiver|MixinAuthorizable|MultiAssetProxy|OrderValidator|ReentrantERC20Token|TestAssetProxyOwner|TestAssetProxyDispatcher|TestConstants|TestExchangeInternals|TestLibBytes|TestSignatureValidator|TestStaticCallReceiver|Validator|Wallet|Whitelist|WETH9|ZRXToken).json"
+        "abis": "generated-artifacts/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|DutchAuction|ERC20Token|ERC20Proxy|ERC721Token|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|InvalidERC721Receiver|MixinAuthorizable|MultiAssetProxy|OrderValidator|ReentrantERC20Token|TestAssetProxyOwner|TestAssetProxyDispatcher|TestConstants|TestExchangeInternals|TestLibBytes|TestSignatureValidator|TestStaticCallReceiver|Validator|Wallet|Whitelist|WETH9|ZRXToken).json"
     },
     "repository": {
         "type": "git",
@@ -77,6 +77,7 @@
         "@0x/contracts-multisig": "^1.0.0",
         "@0x/contracts-utils": "^1.0.0",
         "@0x/contracts-libs": "^1.0.0",
+        "@0x/contracts-interfaces": "^1.0.0",
         "@0x/types": "^1.3.0",
         "@0x/typescript-typings": "^3.0.4",
         "@0x/utils": "^2.0.6",
diff --git a/contracts/core/src/artifacts/index.ts b/contracts/core/src/artifacts/index.ts
index d578c36fe..1d868bae2 100644
--- a/contracts/core/src/artifacts/index.ts
+++ b/contracts/core/src/artifacts/index.ts
@@ -14,11 +14,7 @@ import * as ERC721Token from '../../generated-artifacts/ERC721Token.json';
 import * as Exchange from '../../generated-artifacts/Exchange.json';
 import * as ExchangeWrapper from '../../generated-artifacts/ExchangeWrapper.json';
 import * as Forwarder from '../../generated-artifacts/Forwarder.json';
-import * as IAssetData from '../../generated-artifacts/IAssetData.json';
-import * as IAssetProxy from '../../generated-artifacts/IAssetProxy.json';
 import * as InvalidERC721Receiver from '../../generated-artifacts/InvalidERC721Receiver.json';
-import * as IValidator from '../../generated-artifacts/IValidator.json';
-import * as IWallet from '../../generated-artifacts/IWallet.json';
 import * as MixinAuthorizable from '../../generated-artifacts/MixinAuthorizable.json';
 import * as MultiAssetProxy from '../../generated-artifacts/MultiAssetProxy.json';
 import * as OrderValidator from '../../generated-artifacts/OrderValidator.json';
@@ -49,10 +45,6 @@ export const artifacts = {
     Exchange: Exchange as ContractArtifact,
     ExchangeWrapper: ExchangeWrapper as ContractArtifact,
     Forwarder: Forwarder as ContractArtifact,
-    IAssetData: IAssetData as ContractArtifact,
-    IAssetProxy: IAssetProxy as ContractArtifact,
-    IValidator: IValidator as ContractArtifact,
-    IWallet: IWallet as ContractArtifact,
     InvalidERC721Receiver: InvalidERC721Receiver as ContractArtifact,
     MixinAuthorizable: MixinAuthorizable as ContractArtifact,
     MultiAssetProxy: MultiAssetProxy as ContractArtifact,
diff --git a/contracts/core/src/wrappers/index.ts b/contracts/core/src/wrappers/index.ts
index ed9d8ef47..92e2f6b9f 100644
--- a/contracts/core/src/wrappers/index.ts
+++ b/contracts/core/src/wrappers/index.ts
@@ -12,8 +12,6 @@ export * from '../../generated-wrappers/erc721_token';
 export * from '../../generated-wrappers/exchange';
 export * from '../../generated-wrappers/exchange_wrapper';
 export * from '../../generated-wrappers/forwarder';
-export * from '../../generated-wrappers/i_asset_data';
-export * from '../../generated-wrappers/i_asset_proxy';
 export * from '../../generated-wrappers/invalid_erc721_receiver';
 export * from '../../generated-wrappers/mixin_authorizable';
 export * from '../../generated-wrappers/order_validator';
diff --git a/contracts/core/test/asset_proxy/proxies.ts b/contracts/core/test/asset_proxy/proxies.ts
index 2527b0fbf..faa643924 100644
--- a/contracts/core/test/asset_proxy/proxies.ts
+++ b/contracts/core/test/asset_proxy/proxies.ts
@@ -1,3 +1,4 @@
+import { artifacts as interfacesArtifacts, IAssetDataContract, IAssetProxyContract } from '@0x/contracts-interfaces';
 import {
     chaiSetup,
     constants,
@@ -22,8 +23,6 @@ import { DummyMultipleReturnERC20TokenContract } from '../../generated-wrappers/
 import { DummyNoReturnERC20TokenContract } from '../../generated-wrappers/dummy_no_return_erc20_token';
 import { ERC20ProxyContract } from '../../generated-wrappers/erc20_proxy';
 import { ERC721ProxyContract } from '../../generated-wrappers/erc721_proxy';
-import { IAssetDataContract } from '../../generated-wrappers/i_asset_data';
-import { IAssetProxyContract } from '../../generated-wrappers/i_asset_proxy';
 import { MultiAssetProxyContract } from '../../generated-wrappers/multi_asset_proxy';
 import { artifacts } from '../../src/artifacts';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -33,12 +32,12 @@ chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 const assetProxyInterface = new IAssetProxyContract(
-    artifacts.IAssetProxy.compilerOutput.abi,
+    interfacesArtifacts.IAssetProxy.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
 const assetDataInterface = new IAssetDataContract(
-    artifacts.IAssetData.compilerOutput.abi,
+    interfacesArtifacts.IAssetData.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
diff --git a/contracts/core/test/exchange/core.ts b/contracts/core/test/exchange/core.ts
index fd6b9ee6b..45eae0f22 100644
--- a/contracts/core/test/exchange/core.ts
+++ b/contracts/core/test/exchange/core.ts
@@ -1,3 +1,4 @@
+import { artifacts as interfacesArtifacts, IAssetDataContract } from '@0x/contracts-interfaces';
 import {
     chaiSetup,
     constants,
@@ -27,7 +28,6 @@ import { DummyNoReturnERC20TokenContract } from '../../generated-wrappers/dummy_
 import { ERC20ProxyContract } from '../../generated-wrappers/erc20_proxy';
 import { ERC721ProxyContract } from '../../generated-wrappers/erc721_proxy';
 import { ExchangeCancelEventArgs, ExchangeContract } from '../../generated-wrappers/exchange';
-import { IAssetDataContract } from '../../generated-wrappers/i_asset_data';
 import { MultiAssetProxyContract } from '../../generated-wrappers/multi_asset_proxy';
 import { ReentrantERC20TokenContract } from '../../generated-wrappers/reentrant_erc20_token';
 import { TestStaticCallReceiverContract } from '../../generated-wrappers/test_static_call_receiver';
@@ -40,7 +40,7 @@ chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 const assetDataInterface = new IAssetDataContract(
-    artifacts.IAssetData.compilerOutput.abi,
+    interfacesArtifacts.IAssetData.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
diff --git a/contracts/core/tsconfig.json b/contracts/core/tsconfig.json
index f2f3c4e97..ca3e6c15f 100644
--- a/contracts/core/tsconfig.json
+++ b/contracts/core/tsconfig.json
@@ -21,11 +21,6 @@
         "./generated-artifacts/Exchange.json",
         "./generated-artifacts/ExchangeWrapper.json",
         "./generated-artifacts/Forwarder.json",
-        "./generated-artifacts/IAssetData.json",
-        "./generated-artifacts/IAssetProxy.json",
-        "./generated-artifacts/IValidator.json",
-        "./generated-artifacts/IWallet.json",
-        "./generated-artifacts/InvalidERC721Receiver.json",
         "./generated-artifacts/MixinAuthorizable.json",
         "./generated-artifacts/MultiAssetProxy.json",
         "./generated-artifacts/OrderValidator.json",
@@ -39,6 +34,7 @@
         "./generated-artifacts/WETH9.json",
         "./generated-artifacts/Wallet.json",
         "./generated-artifacts/Whitelist.json",
+        "./generated-artifacts/InvalidERC721Receiver.json",
         "./generated-artifacts/ZRXToken.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
diff --git a/contracts/interfaces/.solhint.json b/contracts/interfaces/.solhint.json
new file mode 100644
index 000000000..076afe9f3
--- /dev/null
+++ b/contracts/interfaces/.solhint.json
@@ -0,0 +1,20 @@
+{
+    "extends": "default",
+    "rules": {
+        "avoid-low-level-calls": false,
+        "avoid-tx-origin": "warn",
+        "bracket-align": false,
+        "code-complexity": false,
+        "const-name-snakecase": "error",
+        "expression-indent": "error",
+        "function-max-lines": false,
+        "func-order": "error",
+        "indent": ["error", 4],
+        "max-line-length": ["warn", 160],
+        "no-inline-assembly": false,
+        "quotes": ["error", "double"],
+        "separate-by-one-line-in-contract": "error",
+        "space-after-comma": "error",
+        "statement-indent": "error"
+    }
+}
diff --git a/contracts/interfaces/README.md b/contracts/interfaces/README.md
new file mode 100644
index 000000000..7e1c42c7b
--- /dev/null
+++ b/contracts/interfaces/README.md
@@ -0,0 +1,72 @@
+## Contracts interfaces
+
+Smart contract interfaces of the 0x protocol.
+
+## Usage
+
+Contracts that make up and interact with version 2.0.0 of the protocol can be found in the [contracts](./contracts) directory. The contents of this directory are broken down into the following subdirectories:
+
+*   [protocol](./contracts/protocol)
+    *   This directory contains the contract interfaces that make up version 2.0.0. A full specification can be found [here](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md).
+
+## Bug bounty
+
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+
+## Contributing
+
+We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
+
+For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install Dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
+
+```bash
+PKG=@0x/contracts-interfaces yarn build
+```
+
+Or continuously rebuild on change:
+
+```bash
+PKG=@0x/contracts-interfaces yarn watch
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
+### Lint
+
+```bash
+yarn lint
+```
+
+### Run Tests
+
+```bash
+yarn test
+```
+
+#### Testing options
+
+Contracts testing options like coverage, profiling, revert traces or backing node choosing - are described [here](../TESTING.md).
diff --git a/contracts/interfaces/compiler.json b/contracts/interfaces/compiler.json
new file mode 100644
index 000000000..38a232541
--- /dev/null
+++ b/contracts/interfaces/compiler.json
@@ -0,0 +1,35 @@
+{
+    "artifactsDir": "./generated-artifacts",
+    "contractsDir": "./contracts",
+    "compilerSettings": {
+        "optimizer": {
+            "enabled": true,
+            "runs": 1000000
+        },
+        "outputSelection": {
+            "*": {
+                "*": [
+                    "abi",
+                    "evm.bytecode.object",
+                    "evm.bytecode.sourceMap",
+                    "evm.deployedBytecode.object",
+                    "evm.deployedBytecode.sourceMap"
+                ]
+            }
+        }
+    },
+    "contracts": [
+        "IAssetData",
+        "IAssetProxy",
+        "IAuthorizable",
+        "IAssetProxyDispatcher",
+        "IExchange",
+        "IExchangeCore",
+        "IMatchOrders",
+        "ISignatureValidator",
+        "ITransactions",
+        "IValidator",
+        "IWallet",
+        "IWrapperFunctions"
+    ]
+}
diff --git a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetData.sol b/contracts/interfaces/contracts/protocol/AssetProxy/IAssetData.sol
index e2da68919..e2da68919 100644
--- a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetData.sol
+++ b/contracts/interfaces/contracts/protocol/AssetProxy/IAssetData.sol
diff --git a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetProxy.sol b/contracts/interfaces/contracts/protocol/AssetProxy/IAssetProxy.sol
index b25d2d75a..b25d2d75a 100644
--- a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetProxy.sol
+++ b/contracts/interfaces/contracts/protocol/AssetProxy/IAssetProxy.sol
diff --git a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAuthorizable.sol b/contracts/interfaces/contracts/protocol/AssetProxy/IAuthorizable.sol
index 96ee05dee..96ee05dee 100644
--- a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAuthorizable.sol
+++ b/contracts/interfaces/contracts/protocol/AssetProxy/IAuthorizable.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol b/contracts/interfaces/contracts/protocol/Exchange/IAssetProxyDispatcher.sol
index 8db8d6f6c..8db8d6f6c 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IAssetProxyDispatcher.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IExchange.sol b/contracts/interfaces/contracts/protocol/Exchange/IExchange.sol
index b92abba04..b92abba04 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IExchange.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IExchange.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IExchangeCore.sol b/contracts/interfaces/contracts/protocol/Exchange/IExchangeCore.sol
index 0da73529c..0da73529c 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IExchangeCore.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IExchangeCore.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IMatchOrders.sol b/contracts/interfaces/contracts/protocol/Exchange/IMatchOrders.sol
index b88e158c3..b88e158c3 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IMatchOrders.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IMatchOrders.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/ISignatureValidator.sol b/contracts/interfaces/contracts/protocol/Exchange/ISignatureValidator.sol
index 1fd0eccf0..1fd0eccf0 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/ISignatureValidator.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/ISignatureValidator.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/ITransactions.sol b/contracts/interfaces/contracts/protocol/Exchange/ITransactions.sol
index 4446c55ce..4446c55ce 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/ITransactions.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/ITransactions.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IValidator.sol b/contracts/interfaces/contracts/protocol/Exchange/IValidator.sol
index 2dd69100c..2dd69100c 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IValidator.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IValidator.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IWallet.sol b/contracts/interfaces/contracts/protocol/Exchange/IWallet.sol
index c97161ca6..c97161ca6 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IWallet.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IWallet.sol
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IWrapperFunctions.sol b/contracts/interfaces/contracts/protocol/Exchange/IWrapperFunctions.sol
index 833bb7e88..833bb7e88 100644
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IWrapperFunctions.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IWrapperFunctions.sol
diff --git a/contracts/interfaces/package.json b/contracts/interfaces/package.json
new file mode 100644
index 000000000..b79ae20ff
--- /dev/null
+++ b/contracts/interfaces/package.json
@@ -0,0 +1,57 @@
+{
+    "private": true,
+    "name": "@0x/contracts-interfaces",
+    "version": "1.0.0",
+    "engines": {
+        "node": ">=6.12"
+    },
+    "description": "Smart contract interfaces of 0x protocol",
+    "main": "lib/src/index.js",
+    "scripts": {
+        "build": "yarn pre_build && tsc -b",
+        "build:ci": "yarn build",
+        "pre_build": "run-s compile generate_contract_wrappers",
+        "compile": "sol-compiler --contracts-dir contracts",
+        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
+        "lint-contracts": "solhint contracts/**/**/**/**/*.sol"
+    },
+    "config": {
+        "abis": "generated-artifacts/@(IAssetData|IAssetProxy|IAuthorizable|IAssetProxyDispatcher|IExchange|IExchangeCore|IMatchOrders|ISignatureValidator|ITransactions|IValidator|IWallet|IWrapperFunctions).json"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/0xProject/0x-monorepo.git"
+    },
+    "license": "Apache-2.0",
+    "bugs": {
+        "url": "https://github.com/0xProject/0x-monorepo/issues"
+    },
+    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/interfaces/README.md",
+    "devDependencies": {
+        "@0x/abi-gen": "^1.0.17",
+        "@0x/sol-compiler": "^1.1.14",
+        "@0x/tslint-config": "^1.0.10",
+        "npm-run-all": "^4.1.2",
+        "shx": "^0.2.2",
+        "solhint": "^1.2.1",
+        "tslint": "5.11.0",
+        "typescript": "3.0.1",
+        "yargs": "^10.0.3"
+    },
+    "dependencies": {
+        "@0x/base-contract": "^3.0.8",
+        "@0x/contracts-utils": "^1.0.0",
+        "@0x/contracts-libs": "^1.0.0",
+        "@0x/types": "^1.3.0",
+        "@0x/typescript-typings": "^3.0.4",
+        "@0x/utils": "^2.0.6",
+        "@0x/web3-wrapper": "^3.1.6",
+        "ethereum-types": "^1.1.2",
+        "lodash": "^4.17.5"
+    },
+    "publishConfig": {
+        "access": "public"
+    }
+}
diff --git a/contracts/interfaces/src/artifacts/index.ts b/contracts/interfaces/src/artifacts/index.ts
new file mode 100644
index 000000000..5a2a37d8a
--- /dev/null
+++ b/contracts/interfaces/src/artifacts/index.ts
@@ -0,0 +1,29 @@
+import { ContractArtifact } from 'ethereum-types';
+
+import * as IAssetData from '../../generated-artifacts/IAssetData.json';
+import * as IAssetProxy from '../../generated-artifacts/IAssetProxy.json';
+import * as IAssetProxyDispatcher from '../../generated-artifacts/IAssetProxyDispatcher.json';
+import * as IAuthorizable from '../../generated-artifacts/IAuthorizable.json';
+import * as IExchange from '../../generated-artifacts/IExchange.json';
+import * as IExchangeCore from '../../generated-artifacts/IExchangeCore.json';
+import * as IMatchOrders from '../../generated-artifacts/IMatchOrders.json';
+import * as ISignatureValidator from '../../generated-artifacts/ISignatureValidator.json';
+import * as ITransactions from '../../generated-artifacts/ITransactions.json';
+import * as IValidator from '../../generated-artifacts/IValidator.json';
+import * as IWallet from '../../generated-artifacts/IWallet.json';
+import * as IWrapperFunctions from '../../generated-artifacts/IWrapperFunctions.json';
+
+export const artifacts = {
+    IAssetProxyDispatcher: IAssetProxyDispatcher as ContractArtifact,
+    IAuthorizable: IAuthorizable as ContractArtifact,
+    IExchange: IExchange as ContractArtifact,
+    IExchangeCore: IExchangeCore as ContractArtifact,
+    IMatchOrders: IMatchOrders as ContractArtifact,
+    ISignatureValidator: ISignatureValidator as ContractArtifact,
+    ITransactions: ITransactions as ContractArtifact,
+    IWrapperFunctions: IWrapperFunctions as ContractArtifact,
+    IAssetData: IAssetData as ContractArtifact,
+    IAssetProxy: IAssetProxy as ContractArtifact,
+    IValidator: IValidator as ContractArtifact,
+    IWallet: IWallet as ContractArtifact,
+};
diff --git a/contracts/interfaces/src/index.ts b/contracts/interfaces/src/index.ts
new file mode 100644
index 000000000..d55f08ea2
--- /dev/null
+++ b/contracts/interfaces/src/index.ts
@@ -0,0 +1,2 @@
+export * from './artifacts';
+export * from './wrappers';
diff --git a/contracts/interfaces/src/wrappers/index.ts b/contracts/interfaces/src/wrappers/index.ts
new file mode 100644
index 000000000..f7f72fada
--- /dev/null
+++ b/contracts/interfaces/src/wrappers/index.ts
@@ -0,0 +1,12 @@
+export * from '../../generated-wrappers/i_asset_data';
+export * from '../../generated-wrappers/i_asset_proxy';
+export * from '../../generated-wrappers/i_asset_proxy_dispatcher';
+export * from '../../generated-wrappers/i_exchange';
+export * from '../../generated-wrappers/i_exchange_core';
+export * from '../../generated-wrappers/i_match_orders';
+export * from '../../generated-wrappers/i_signature_validator';
+export * from '../../generated-wrappers/i_transactions';
+export * from '../../generated-wrappers/i_authorizable';
+export * from '../../generated-wrappers/i_wrapper_functions';
+export * from '../../generated-wrappers/i_validator';
+export * from '../../generated-wrappers/i_wallet';
diff --git a/contracts/interfaces/tsconfig.json b/contracts/interfaces/tsconfig.json
new file mode 100644
index 000000000..90b7d41bb
--- /dev/null
+++ b/contracts/interfaces/tsconfig.json
@@ -0,0 +1,24 @@
+{
+    "extends": "../../tsconfig",
+    "compilerOptions": {
+        "outDir": "lib",
+        "rootDir": ".",
+        "resolveJsonModule": true
+    },
+    "include": ["./src/**/*", "./generated-wrappers/**/*"],
+    "files": [
+        "./generated-artifacts/IAssetData.json",
+        "./generated-artifacts/IAssetProxy.json",
+        "./generated-artifacts/IAuthorizable.json",
+        "./generated-artifacts/IAssetProxyDispatcher.json",
+        "./generated-artifacts/IExchange.json",
+        "./generated-artifacts/IExchangeCore.json",
+        "./generated-artifacts/IMatchOrders.json",
+        "./generated-artifacts/ISignatureValidator.json",
+        "./generated-artifacts/ITransactions.json",
+        "./generated-artifacts/IValidator.json",
+        "./generated-artifacts/IWallet.json",
+        "./generated-artifacts/IWrapperFunctions.json"
+    ],
+    "exclude": ["./deploy/solc/solc_bin"]
+}
diff --git a/contracts/interfaces/tslint.json b/contracts/interfaces/tslint.json
new file mode 100644
index 000000000..1bb3ac2a2
--- /dev/null
+++ b/contracts/interfaces/tslint.json
@@ -0,0 +1,6 @@
+{
+    "extends": ["@0x/tslint-config"],
+    "rules": {
+        "custom-no-magic-numbers": false
+    }
+}