diff --git a/.eslintrc.js b/.eslintrc.js
index 23d5ab1a2a..8c99e12c50 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,4 +1,5 @@
 module.exports = {
+  root: true,
   env: {
     commonjs: true,
     es6: true,
diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index f26f04748a..de5855ad59 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -25,6 +25,8 @@ jobs:
 
       - name: Install node_modules
         uses: OffchainLabs/actions/node-modules/install@main
+        with:
+          cache-key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}-monorepo
 
   lint:
     name: Lint on Node.js v${{ matrix.node-version }}
@@ -48,6 +50,8 @@ jobs:
 
       - name: Install node_modules
         uses: OffchainLabs/actions/node-modules/install@main
+        with:
+          cache-key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}-monorepo
 
       - name: Lint sdk
         run: |
@@ -93,6 +97,8 @@ jobs:
 
       - name: Install node_modules
         uses: OffchainLabs/actions/node-modules/install@main
+        with:
+          cache-key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}-monorepo
 
       - run: yarn audit:ci
 
@@ -114,6 +120,8 @@ jobs:
 
       - name: Install node_modules
         uses: OffchainLabs/actions/node-modules/install@main
+        with:
+          cache-key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}-monorepo
 
       - name: Build
         run: |
@@ -176,6 +184,8 @@ jobs:
 
       - name: Install node_modules
         uses: OffchainLabs/actions/node-modules/install@main
+        with:
+          cache-key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}-monorepo
 
       - name: Set up the local node
         uses: OffchainLabs/actions/run-nitro-test-node@main
diff --git a/package.json b/package.json
index fad6ee2bb0..21e09ec6a5 100644
--- a/package.json
+++ b/package.json
@@ -1,56 +1,19 @@
 {
-  "name": "@arbitrum/sdk",
-  "version": "4.0.2",
-  "description": "Typescript library client-side interactions with Arbitrum",
-  "author": "Offchain Labs, Inc.",
-  "license": "Apache-2.0",
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/offchainlabs/arbitrum-sdk.git"
-  },
-  "engines": {
-    "node": ">=v11",
-    "npm": "please-use-yarn",
-    "yarn": ">= 1.0.0"
-  },
-  "bugs": {
-    "url": "https://github.com/offchainlabs/arbitrum-sdk/issues"
-  },
-  "homepage": "https://offchainlabs.com",
+  "private": true,
   "scripts": {
     "audit:ci": "audit-ci --config ./audit-ci.jsonc",
-    "prepare": "yarn run gen:abi",
-    "gen:abi": "node ./scripts/genAbi.js",
-    "gen:network": "ts-node ./scripts/genNetwork.ts",
-    "prepublishOnly": "yarn build && yarn format",
-    "preversion": "yarn lint",
-    "prebuild": "yarn gen:abi",
-    "build": "./scripts/builder",
-    "watch": "tsc --watch",
-    "test": "mocha",
-    "test:coverage": "nyc mocha",
-    "test:fork": "SHOULD_FORK=1 hardhat test tests/fork/*.test.ts",
-    "test:integration": "mocha tests/integration/ --timeout 30000000 --bail",
-    "test:unit": "mocha --parallel tests/unit/ --timeout 30000 --bail",
-    "test:ci": "nyc --reporter=lcovonly mocha --reporter xunit",
-    "lint": "eslint .",
-    "format": "prettier './**/*.{js,json,md,ts,yml}' '!./src/lib/abi' --write && yarn run lint --fix",
-    "clean:compile": "ts-node scripts/cleanCompileContracts.ts",
-    "checkRetryable": "ts-node scripts/checkRetryableStatus.ts",
-    "redeemRetryable": "ts-node scripts/redeemRetryable.ts",
-    "setStandard": "ts-node scripts/setStandardGateways.ts",
-    "setCustom": "ts-node scripts/setArbCustomGateways.ts",
-    "cancelRetryable": "ts-node scripts/cancelRetryable.ts",
-    "bridgeStandardToken": "ts-node scripts/deployStandard.ts"
+    "build": "yarn workspace @arbitrum/sdk build",
+    "lint": "yarn workspace @arbitrum/sdk lint",
+    "format": "yarn workspace @arbitrum/sdk format",
+    "test:unit": "yarn workspace @arbitrum/sdk test:unit",
+    "test:integration": "yarn workspace @arbitrum/sdk test:integration",
+    "gen:abi": "yarn workspace @arbitrum/sdk gen:abi",
+    "gen:network": "yarn workspace @arbitrum/sdk gen:network"
   },
-  "dependencies": {
-    "@ethersproject/address": "^5.0.8",
-    "@ethersproject/bignumber": "^5.1.1",
-    "@ethersproject/bytes": "^5.0.8",
-    "async-mutex": "^0.4.0",
-    "ethers": "^5.1.0"
+  "workspaces": {
+    "packages": [
+      "packages/*"
+    ]
   },
   "devDependencies": {
     "@arbitrum/nitro-contracts": "^1.1.1",
@@ -87,9 +50,6 @@
     "typescript": "^4.9.5",
     "yargs": "^17.3.1"
   },
-  "files": [
-    "dist/**/*"
-  ],
   "resolutions": {
     "lodash.pick": "https://github.com/lodash/lodash/archive/refs/tags/4.17.21.tar.gz",
     "**/@ethersproject/providers/ws": "7.5.10",
diff --git a/.eslintignore b/packages/sdk/.eslintignore
similarity index 100%
rename from .eslintignore
rename to packages/sdk/.eslintignore
diff --git a/packages/sdk/.eslintrc b/packages/sdk/.eslintrc
new file mode 100644
index 0000000000..bde91889ba
--- /dev/null
+++ b/packages/sdk/.eslintrc
@@ -0,0 +1,8 @@
+{
+  "root": false,
+  "extends": ["../../.eslintrc.js"],
+  "parserOptions": {
+    "files": ["src/**/*.ts", "src/**/*.js"]
+  },
+  "ignorePatterns": ["dist/**/*", "node_modules/**/*"]
+} 
\ No newline at end of file
diff --git a/.prettierignore b/packages/sdk/.prettierignore
similarity index 100%
rename from .prettierignore
rename to packages/sdk/.prettierignore
diff --git a/packages/sdk/.prettierrc.js b/packages/sdk/.prettierrc.js
new file mode 100644
index 0000000000..008736fae8
--- /dev/null
+++ b/packages/sdk/.prettierrc.js
@@ -0,0 +1,5 @@
+const baseConfig = require('../../.prettierrc.js')
+
+module.exports = {
+  ...baseConfig,
+}
diff --git a/packages/sdk/package.json b/packages/sdk/package.json
new file mode 100644
index 0000000000..f6c17b6cfd
--- /dev/null
+++ b/packages/sdk/package.json
@@ -0,0 +1,58 @@
+{
+  "name": "@arbitrum/sdk",
+  "version": "4.0.2",
+  "description": "Typescript library client-side interactions with Arbitrum",
+  "author": "Offchain Labs, Inc.",
+  "license": "Apache-2.0",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/offchainlabs/arbitrum-sdk.git"
+  },
+  "engines": {
+    "node": ">=v11",
+    "npm": "please-use-yarn",
+    "yarn": ">= 1.0.0"
+  },
+  "bugs": {
+    "url": "https://github.com/offchainlabs/arbitrum-sdk/issues"
+  },
+  "homepage": "https://offchainlabs.com",
+  "files": [
+    "dist/**/*"
+  ],
+  "scripts": {
+    "audit:ci": "audit-ci --config ./audit-ci.jsonc",
+    "prepare": "yarn run gen:abi",
+    "gen:abi": "node ./scripts/genAbi.js",
+    "gen:network": "ts-node ./scripts/genNetwork.ts",
+    "prepublishOnly": "yarn build && yarn format",
+    "preversion": "yarn lint",
+    "prebuild": "yarn gen:abi",
+    "build": "./scripts/builder",
+    "watch": "tsc --watch",
+    "test": "mocha",
+    "test:coverage": "nyc mocha",
+    "test:fork": "SHOULD_FORK=1 hardhat test tests/fork/*.test.ts",
+    "test:integration": "mocha tests/integration/ --timeout 30000000 --bail",
+    "test:unit": "mocha --parallel tests/unit/ --timeout 30000 --bail",
+    "test:ci": "nyc --reporter=lcovonly mocha --reporter xunit",
+    "lint": "eslint .",
+    "format": "prettier './**/*.{js,json,md,ts,yml}' '!./src/lib/abi' --write && yarn run lint --fix",
+    "clean:compile": "ts-node scripts/cleanCompileContracts.ts",
+    "checkRetryable": "ts-node scripts/checkRetryableStatus.ts",
+    "redeemRetryable": "ts-node scripts/redeemRetryable.ts",
+    "setStandard": "ts-node scripts/setStandardGateways.ts",
+    "setCustom": "ts-node scripts/setArbCustomGateways.ts",
+    "cancelRetryable": "ts-node scripts/cancelRetryable.ts",
+    "bridgeStandardToken": "ts-node scripts/deployStandard.ts"
+  },
+  "dependencies": {
+    "@ethersproject/address": "^5.0.8",
+    "@ethersproject/bignumber": "^5.1.1",
+    "@ethersproject/bytes": "^5.0.8",
+    "async-mutex": "^0.4.0",
+    "ethers": "^5.1.0"
+  }
+}
diff --git a/scripts/builder b/packages/sdk/scripts/builder
similarity index 100%
rename from scripts/builder
rename to packages/sdk/scripts/builder
diff --git a/scripts/cancelRetryable.ts b/packages/sdk/scripts/cancelRetryable.ts
similarity index 100%
rename from scripts/cancelRetryable.ts
rename to packages/sdk/scripts/cancelRetryable.ts
diff --git a/scripts/checkRetryableStatus.ts b/packages/sdk/scripts/checkRetryableStatus.ts
similarity index 100%
rename from scripts/checkRetryableStatus.ts
rename to packages/sdk/scripts/checkRetryableStatus.ts
diff --git a/scripts/cleanCompileContracts.ts b/packages/sdk/scripts/cleanCompileContracts.ts
similarity index 100%
rename from scripts/cleanCompileContracts.ts
rename to packages/sdk/scripts/cleanCompileContracts.ts
diff --git a/scripts/deployStandard.ts b/packages/sdk/scripts/deployStandard.ts
similarity index 98%
rename from scripts/deployStandard.ts
rename to packages/sdk/scripts/deployStandard.ts
index 0fb68cdc5a..8dacd102c9 100644
--- a/scripts/deployStandard.ts
+++ b/packages/sdk/scripts/deployStandard.ts
@@ -1,11 +1,12 @@
 import { instantiateBridge } from './instantiate_bridge'
-import dotenv from 'dotenv'
+import { loadEnv } from '../src/lib/utils/env'
 import args from './getCLargs'
 import { constants, BigNumber, utils } from 'ethers'
 import { MultiCaller } from '../src'
 import axios from 'axios'
 import prompt from 'prompts'
-dotenv.config()
+
+loadEnv()
 
 const privKey = process.env.PRIVKEY as string
 if (!privKey) {
diff --git a/scripts/genAbi.js b/packages/sdk/scripts/genAbi.js
similarity index 100%
rename from scripts/genAbi.js
rename to packages/sdk/scripts/genAbi.js
diff --git a/scripts/genNetwork.ts b/packages/sdk/scripts/genNetwork.ts
similarity index 98%
rename from scripts/genNetwork.ts
rename to packages/sdk/scripts/genNetwork.ts
index f991bc2660..be6b4270b1 100644
--- a/scripts/genNetwork.ts
+++ b/packages/sdk/scripts/genNetwork.ts
@@ -1,5 +1,4 @@
-import * as dotenv from 'dotenv'
-dotenv.config()
+import { loadEnv } from '../src/lib/utils/env'
 import { execSync } from 'child_process'
 import * as fs from 'fs'
 
@@ -11,6 +10,8 @@ import {
   mapL2NetworkToArbitrumNetwork,
 } from '../src/lib/dataEntities/networks'
 
+loadEnv()
+
 const isTestingOrbitChains = process.env.ORBIT_TEST === '1'
 
 function getLocalNetworksFromContainer(which: 'l1l2' | 'l2l3'): any {
diff --git a/scripts/getCLargs.ts b/packages/sdk/scripts/getCLargs.ts
similarity index 100%
rename from scripts/getCLargs.ts
rename to packages/sdk/scripts/getCLargs.ts
diff --git a/scripts/instantiate_bridge.ts b/packages/sdk/scripts/instantiate_bridge.ts
similarity index 98%
rename from scripts/instantiate_bridge.ts
rename to packages/sdk/scripts/instantiate_bridge.ts
index 747a81e8b6..d73719755a 100644
--- a/scripts/instantiate_bridge.ts
+++ b/packages/sdk/scripts/instantiate_bridge.ts
@@ -18,8 +18,8 @@
 
 import { JsonRpcProvider } from '@ethersproject/providers'
 import { Wallet } from '@ethersproject/wallet'
+import { loadEnv } from '../src/lib/utils/env'
 
-import dotenv from 'dotenv'
 import args from './getCLargs'
 import { EthBridger, InboxTools, Erc20Bridger } from '../src'
 import {
@@ -29,7 +29,7 @@ import {
 import { Signer } from 'ethers'
 import { AdminErc20Bridger } from '../src/lib/assetBridger/erc20Bridger'
 
-dotenv.config()
+loadEnv()
 
 const arbKey = process.env['ARB_KEY'] as string
 const ethKey = process.env['ETH_KEY'] as string
diff --git a/scripts/lib.ts b/packages/sdk/scripts/lib.ts
similarity index 100%
rename from scripts/lib.ts
rename to packages/sdk/scripts/lib.ts
diff --git a/scripts/postProcessDocs.js b/packages/sdk/scripts/postProcessDocs.js
similarity index 100%
rename from scripts/postProcessDocs.js
rename to packages/sdk/scripts/postProcessDocs.js
diff --git a/scripts/redeemRetryable.ts b/packages/sdk/scripts/redeemRetryable.ts
similarity index 100%
rename from scripts/redeemRetryable.ts
rename to packages/sdk/scripts/redeemRetryable.ts
diff --git a/scripts/scrap.ts b/packages/sdk/scripts/scrap.ts
similarity index 100%
rename from scripts/scrap.ts
rename to packages/sdk/scripts/scrap.ts
diff --git a/scripts/sendL2SignedMsg.ts b/packages/sdk/scripts/sendL2SignedMsg.ts
similarity index 100%
rename from scripts/sendL2SignedMsg.ts
rename to packages/sdk/scripts/sendL2SignedMsg.ts
diff --git a/scripts/setArbCustomGateways.ts b/packages/sdk/scripts/setArbCustomGateways.ts
similarity index 100%
rename from scripts/setArbCustomGateways.ts
rename to packages/sdk/scripts/setArbCustomGateways.ts
diff --git a/scripts/setStandardGateways.ts b/packages/sdk/scripts/setStandardGateways.ts
similarity index 100%
rename from scripts/setStandardGateways.ts
rename to packages/sdk/scripts/setStandardGateways.ts
diff --git a/scripts/testSetup.ts b/packages/sdk/scripts/testSetup.ts
similarity index 98%
rename from scripts/testSetup.ts
rename to packages/sdk/scripts/testSetup.ts
index 10bc2c68ba..2967eaded0 100644
--- a/scripts/testSetup.ts
+++ b/packages/sdk/scripts/testSetup.ts
@@ -19,7 +19,7 @@
 import { JsonRpcProvider } from '@ethersproject/providers'
 import { Wallet } from '@ethersproject/wallet'
 import { Provider } from '@ethersproject/abstract-provider'
-import dotenv from 'dotenv'
+import { loadEnv } from '../src/lib/utils/env'
 
 import { EthBridger, InboxTools, Erc20Bridger } from '../src'
 import {
@@ -41,7 +41,7 @@ import {
 } from '../tests/integration/custom-fee-token/customFeeTokenTestHelpers'
 import { fundParentSigner } from '../tests/integration/testHelpers'
 
-dotenv.config()
+loadEnv()
 
 const isTestingOrbitChains = process.env.ORBIT_TEST === '1'
 
diff --git a/scripts/upgrade_weth.ts b/packages/sdk/scripts/upgrade_weth.ts
similarity index 100%
rename from scripts/upgrade_weth.ts
rename to packages/sdk/scripts/upgrade_weth.ts
diff --git a/scripts/util.ts b/packages/sdk/scripts/util.ts
similarity index 100%
rename from scripts/util.ts
rename to packages/sdk/scripts/util.ts
diff --git a/src/index.ts b/packages/sdk/src/index.ts
similarity index 100%
rename from src/index.ts
rename to packages/sdk/src/index.ts
diff --git a/src/lib/abi-bold/BoldRollupUserLogic.ts b/packages/sdk/src/lib/abi-bold/BoldRollupUserLogic.ts
similarity index 100%
rename from src/lib/abi-bold/BoldRollupUserLogic.ts
rename to packages/sdk/src/lib/abi-bold/BoldRollupUserLogic.ts
diff --git a/src/lib/abi-bold/factories/BoldRollupUserLogic__factory.ts b/packages/sdk/src/lib/abi-bold/factories/BoldRollupUserLogic__factory.ts
similarity index 100%
rename from src/lib/abi-bold/factories/BoldRollupUserLogic__factory.ts
rename to packages/sdk/src/lib/abi-bold/factories/BoldRollupUserLogic__factory.ts
diff --git a/src/lib/assetBridger/assetBridger.ts b/packages/sdk/src/lib/assetBridger/assetBridger.ts
similarity index 100%
rename from src/lib/assetBridger/assetBridger.ts
rename to packages/sdk/src/lib/assetBridger/assetBridger.ts
diff --git a/src/lib/assetBridger/erc20Bridger.ts b/packages/sdk/src/lib/assetBridger/erc20Bridger.ts
similarity index 100%
rename from src/lib/assetBridger/erc20Bridger.ts
rename to packages/sdk/src/lib/assetBridger/erc20Bridger.ts
diff --git a/src/lib/assetBridger/ethBridger.ts b/packages/sdk/src/lib/assetBridger/ethBridger.ts
similarity index 100%
rename from src/lib/assetBridger/ethBridger.ts
rename to packages/sdk/src/lib/assetBridger/ethBridger.ts
diff --git a/src/lib/assetBridger/l1l3Bridger.ts b/packages/sdk/src/lib/assetBridger/l1l3Bridger.ts
similarity index 100%
rename from src/lib/assetBridger/l1l3Bridger.ts
rename to packages/sdk/src/lib/assetBridger/l1l3Bridger.ts
diff --git a/src/lib/dataEntities/Outbox.json b/packages/sdk/src/lib/dataEntities/Outbox.json
similarity index 100%
rename from src/lib/dataEntities/Outbox.json
rename to packages/sdk/src/lib/dataEntities/Outbox.json
diff --git a/src/lib/dataEntities/address.ts b/packages/sdk/src/lib/dataEntities/address.ts
similarity index 100%
rename from src/lib/dataEntities/address.ts
rename to packages/sdk/src/lib/dataEntities/address.ts
diff --git a/src/lib/dataEntities/constants.ts b/packages/sdk/src/lib/dataEntities/constants.ts
similarity index 100%
rename from src/lib/dataEntities/constants.ts
rename to packages/sdk/src/lib/dataEntities/constants.ts
diff --git a/src/lib/dataEntities/errors.ts b/packages/sdk/src/lib/dataEntities/errors.ts
similarity index 100%
rename from src/lib/dataEntities/errors.ts
rename to packages/sdk/src/lib/dataEntities/errors.ts
diff --git a/src/lib/dataEntities/event.ts b/packages/sdk/src/lib/dataEntities/event.ts
similarity index 100%
rename from src/lib/dataEntities/event.ts
rename to packages/sdk/src/lib/dataEntities/event.ts
diff --git a/src/lib/dataEntities/message.ts b/packages/sdk/src/lib/dataEntities/message.ts
similarity index 100%
rename from src/lib/dataEntities/message.ts
rename to packages/sdk/src/lib/dataEntities/message.ts
diff --git a/src/lib/dataEntities/networks.ts b/packages/sdk/src/lib/dataEntities/networks.ts
similarity index 100%
rename from src/lib/dataEntities/networks.ts
rename to packages/sdk/src/lib/dataEntities/networks.ts
diff --git a/src/lib/dataEntities/retryableData.ts b/packages/sdk/src/lib/dataEntities/retryableData.ts
similarity index 100%
rename from src/lib/dataEntities/retryableData.ts
rename to packages/sdk/src/lib/dataEntities/retryableData.ts
diff --git a/src/lib/dataEntities/rpc.ts b/packages/sdk/src/lib/dataEntities/rpc.ts
similarity index 100%
rename from src/lib/dataEntities/rpc.ts
rename to packages/sdk/src/lib/dataEntities/rpc.ts
diff --git a/src/lib/dataEntities/signerOrProvider.ts b/packages/sdk/src/lib/dataEntities/signerOrProvider.ts
similarity index 100%
rename from src/lib/dataEntities/signerOrProvider.ts
rename to packages/sdk/src/lib/dataEntities/signerOrProvider.ts
diff --git a/src/lib/dataEntities/transactionRequest.ts b/packages/sdk/src/lib/dataEntities/transactionRequest.ts
similarity index 100%
rename from src/lib/dataEntities/transactionRequest.ts
rename to packages/sdk/src/lib/dataEntities/transactionRequest.ts
diff --git a/src/lib/inbox/inbox.ts b/packages/sdk/src/lib/inbox/inbox.ts
similarity index 100%
rename from src/lib/inbox/inbox.ts
rename to packages/sdk/src/lib/inbox/inbox.ts
diff --git a/src/lib/message/ChildToParentMessage.ts b/packages/sdk/src/lib/message/ChildToParentMessage.ts
similarity index 100%
rename from src/lib/message/ChildToParentMessage.ts
rename to packages/sdk/src/lib/message/ChildToParentMessage.ts
diff --git a/src/lib/message/ChildToParentMessageClassic.ts b/packages/sdk/src/lib/message/ChildToParentMessageClassic.ts
similarity index 100%
rename from src/lib/message/ChildToParentMessageClassic.ts
rename to packages/sdk/src/lib/message/ChildToParentMessageClassic.ts
diff --git a/src/lib/message/ChildToParentMessageNitro.ts b/packages/sdk/src/lib/message/ChildToParentMessageNitro.ts
similarity index 100%
rename from src/lib/message/ChildToParentMessageNitro.ts
rename to packages/sdk/src/lib/message/ChildToParentMessageNitro.ts
diff --git a/src/lib/message/ChildTransaction.ts b/packages/sdk/src/lib/message/ChildTransaction.ts
similarity index 100%
rename from src/lib/message/ChildTransaction.ts
rename to packages/sdk/src/lib/message/ChildTransaction.ts
diff --git a/src/lib/message/ParentToChildMessage.ts b/packages/sdk/src/lib/message/ParentToChildMessage.ts
similarity index 100%
rename from src/lib/message/ParentToChildMessage.ts
rename to packages/sdk/src/lib/message/ParentToChildMessage.ts
diff --git a/src/lib/message/ParentToChildMessageCreator.ts b/packages/sdk/src/lib/message/ParentToChildMessageCreator.ts
similarity index 100%
rename from src/lib/message/ParentToChildMessageCreator.ts
rename to packages/sdk/src/lib/message/ParentToChildMessageCreator.ts
diff --git a/src/lib/message/ParentToChildMessageGasEstimator.ts b/packages/sdk/src/lib/message/ParentToChildMessageGasEstimator.ts
similarity index 100%
rename from src/lib/message/ParentToChildMessageGasEstimator.ts
rename to packages/sdk/src/lib/message/ParentToChildMessageGasEstimator.ts
diff --git a/src/lib/message/ParentTransaction.ts b/packages/sdk/src/lib/message/ParentTransaction.ts
similarity index 100%
rename from src/lib/message/ParentTransaction.ts
rename to packages/sdk/src/lib/message/ParentTransaction.ts
diff --git a/src/lib/message/messageDataParser.ts b/packages/sdk/src/lib/message/messageDataParser.ts
similarity index 100%
rename from src/lib/message/messageDataParser.ts
rename to packages/sdk/src/lib/message/messageDataParser.ts
diff --git a/src/lib/utils/arbProvider.ts b/packages/sdk/src/lib/utils/arbProvider.ts
similarity index 100%
rename from src/lib/utils/arbProvider.ts
rename to packages/sdk/src/lib/utils/arbProvider.ts
diff --git a/src/lib/utils/byte_serialize_params.ts b/packages/sdk/src/lib/utils/byte_serialize_params.ts
similarity index 100%
rename from src/lib/utils/byte_serialize_params.ts
rename to packages/sdk/src/lib/utils/byte_serialize_params.ts
diff --git a/src/lib/utils/calldata.ts b/packages/sdk/src/lib/utils/calldata.ts
similarity index 100%
rename from src/lib/utils/calldata.ts
rename to packages/sdk/src/lib/utils/calldata.ts
diff --git a/packages/sdk/src/lib/utils/env.ts b/packages/sdk/src/lib/utils/env.ts
new file mode 100644
index 0000000000..f8c855ad3d
--- /dev/null
+++ b/packages/sdk/src/lib/utils/env.ts
@@ -0,0 +1,6 @@
+import * as dotenv from 'dotenv'
+import * as path from 'path'
+
+export const loadEnv = () => {
+  dotenv.config({ path: path.resolve(__dirname, '../../../../../.env') })
+}
diff --git a/src/lib/utils/eventFetcher.ts b/packages/sdk/src/lib/utils/eventFetcher.ts
similarity index 100%
rename from src/lib/utils/eventFetcher.ts
rename to packages/sdk/src/lib/utils/eventFetcher.ts
diff --git a/src/lib/utils/lib.ts b/packages/sdk/src/lib/utils/lib.ts
similarity index 100%
rename from src/lib/utils/lib.ts
rename to packages/sdk/src/lib/utils/lib.ts
diff --git a/src/lib/utils/multicall.ts b/packages/sdk/src/lib/utils/multicall.ts
similarity index 100%
rename from src/lib/utils/multicall.ts
rename to packages/sdk/src/lib/utils/multicall.ts
diff --git a/src/lib/utils/types.ts b/packages/sdk/src/lib/utils/types.ts
similarity index 100%
rename from src/lib/utils/types.ts
rename to packages/sdk/src/lib/utils/types.ts
diff --git a/tests/fork/inbox.test.ts b/packages/sdk/tests/fork/inbox.test.ts
similarity index 100%
rename from tests/fork/inbox.test.ts
rename to packages/sdk/tests/fork/inbox.test.ts
diff --git a/tests/integration/childTransactionReceipt.test.ts b/packages/sdk/tests/integration/childTransactionReceipt.test.ts
similarity index 100%
rename from tests/integration/childTransactionReceipt.test.ts
rename to packages/sdk/tests/integration/childTransactionReceipt.test.ts
diff --git a/tests/integration/custom-fee-token/customFeeTokenEthBridger.test.ts b/packages/sdk/tests/integration/custom-fee-token/customFeeTokenEthBridger.test.ts
similarity index 99%
rename from tests/integration/custom-fee-token/customFeeTokenEthBridger.test.ts
rename to packages/sdk/tests/integration/custom-fee-token/customFeeTokenEthBridger.test.ts
index a2fb36b9a0..7e20f3cbe8 100644
--- a/tests/integration/custom-fee-token/customFeeTokenEthBridger.test.ts
+++ b/packages/sdk/tests/integration/custom-fee-token/customFeeTokenEthBridger.test.ts
@@ -18,7 +18,7 @@
 
 import { expect } from 'chai'
 import { ethers, constants, Wallet } from 'ethers'
-import dotenv from 'dotenv'
+import { loadEnv } from '../../../src/lib/utils/env'
 
 import { parseEther, parseUnits } from '@ethersproject/units'
 
@@ -34,7 +34,7 @@ import { ChildToParentMessageStatus } from '../../../src'
 import { ChildToParentMessage } from '../../../src/lib/message/ChildToParentMessage'
 import { getNativeTokenDecimals } from '../../../src/lib/utils/lib'
 
-dotenv.config()
+loadEnv()
 
 describeOnlyWhenCustomGasToken(
   'EthBridger (with custom fee token)',
diff --git a/tests/integration/custom-fee-token/customFeeTokenTestHelpers.ts b/packages/sdk/tests/integration/custom-fee-token/customFeeTokenTestHelpers.ts
similarity index 100%
rename from tests/integration/custom-fee-token/customFeeTokenTestHelpers.ts
rename to packages/sdk/tests/integration/custom-fee-token/customFeeTokenTestHelpers.ts
diff --git a/tests/integration/custom-fee-token/mochaExtensions.ts b/packages/sdk/tests/integration/custom-fee-token/mochaExtensions.ts
similarity index 100%
rename from tests/integration/custom-fee-token/mochaExtensions.ts
rename to packages/sdk/tests/integration/custom-fee-token/mochaExtensions.ts
diff --git a/tests/integration/customerc20.test.ts b/packages/sdk/tests/integration/customerc20.test.ts
similarity index 100%
rename from tests/integration/customerc20.test.ts
rename to packages/sdk/tests/integration/customerc20.test.ts
diff --git a/tests/integration/eth.test.ts b/packages/sdk/tests/integration/eth.test.ts
similarity index 99%
rename from tests/integration/eth.test.ts
rename to packages/sdk/tests/integration/eth.test.ts
index 6c2aacedc8..dcaa576092 100644
--- a/tests/integration/eth.test.ts
+++ b/packages/sdk/tests/integration/eth.test.ts
@@ -17,8 +17,7 @@
 'use strict'
 
 import { expect } from 'chai'
-import dotenv from 'dotenv'
-
+import { loadEnv } from '../../src/lib/utils/env'
 import { Wallet } from '@ethersproject/wallet'
 import { parseEther } from '@ethersproject/units'
 import { constants } from 'ethers'
@@ -44,7 +43,7 @@ import {
 } from '../../src/lib/utils/lib'
 import { parseUnits } from 'ethers/lib/utils'
 
-dotenv.config()
+loadEnv()
 
 describe('Ether', async () => {
   beforeEach('skipIfMainnet', async function () {
diff --git a/tests/integration/getArbitrumNetworkInformationFromRollup.test.ts b/packages/sdk/tests/integration/getArbitrumNetworkInformationFromRollup.test.ts
similarity index 97%
rename from tests/integration/getArbitrumNetworkInformationFromRollup.test.ts
rename to packages/sdk/tests/integration/getArbitrumNetworkInformationFromRollup.test.ts
index 92f2569937..bf4a79bb68 100644
--- a/tests/integration/getArbitrumNetworkInformationFromRollup.test.ts
+++ b/packages/sdk/tests/integration/getArbitrumNetworkInformationFromRollup.test.ts
@@ -1,14 +1,14 @@
-import dotenv from 'dotenv'
 import { JsonRpcProvider } from '@ethersproject/providers'
 import { constants } from 'ethers'
 import { expect } from 'chai'
+import { loadEnv } from '../../src/lib/utils/env'
 
 import {
   getArbitrumNetwork,
   getArbitrumNetworkInformationFromRollup,
 } from '../../src/lib/dataEntities/networks'
 
-dotenv.config()
+loadEnv()
 
 describe('getArbitrumNetworkInformationFromRollup', () => {
   it('fetches information about arbitrum one', async () => {
diff --git a/tests/integration/helper/greeter.ts b/packages/sdk/tests/integration/helper/greeter.ts
similarity index 100%
rename from tests/integration/helper/greeter.ts
rename to packages/sdk/tests/integration/helper/greeter.ts
diff --git a/tests/integration/l1l3Bridger.test.ts b/packages/sdk/tests/integration/l1l3Bridger.test.ts
similarity index 100%
rename from tests/integration/l1l3Bridger.test.ts
rename to packages/sdk/tests/integration/l1l3Bridger.test.ts
diff --git a/tests/integration/parentToChildMessageCreator.test.ts b/packages/sdk/tests/integration/parentToChildMessageCreator.test.ts
similarity index 100%
rename from tests/integration/parentToChildMessageCreator.test.ts
rename to packages/sdk/tests/integration/parentToChildMessageCreator.test.ts
diff --git a/tests/integration/parentToChildMessageGasEstimator.test.ts b/packages/sdk/tests/integration/parentToChildMessageGasEstimator.test.ts
similarity index 100%
rename from tests/integration/parentToChildMessageGasEstimator.test.ts
rename to packages/sdk/tests/integration/parentToChildMessageGasEstimator.test.ts
diff --git a/tests/integration/retryableData.test.ts b/packages/sdk/tests/integration/retryableData.test.ts
similarity index 100%
rename from tests/integration/retryableData.test.ts
rename to packages/sdk/tests/integration/retryableData.test.ts
diff --git a/tests/integration/sanity.test.ts b/packages/sdk/tests/integration/sanity.test.ts
similarity index 100%
rename from tests/integration/sanity.test.ts
rename to packages/sdk/tests/integration/sanity.test.ts
diff --git a/tests/integration/sendChildmsg.test.ts b/packages/sdk/tests/integration/sendChildmsg.test.ts
similarity index 100%
rename from tests/integration/sendChildmsg.test.ts
rename to packages/sdk/tests/integration/sendChildmsg.test.ts
diff --git a/tests/integration/standarderc20.test.ts b/packages/sdk/tests/integration/standarderc20.test.ts
similarity index 100%
rename from tests/integration/standarderc20.test.ts
rename to packages/sdk/tests/integration/standarderc20.test.ts
diff --git a/tests/integration/testHelpers.ts b/packages/sdk/tests/integration/testHelpers.ts
similarity index 100%
rename from tests/integration/testHelpers.ts
rename to packages/sdk/tests/integration/testHelpers.ts
diff --git a/tests/integration/weth.test.ts b/packages/sdk/tests/integration/weth.test.ts
similarity index 100%
rename from tests/integration/weth.test.ts
rename to packages/sdk/tests/integration/weth.test.ts
diff --git a/tests/unit/addressAlias.test.ts b/packages/sdk/tests/unit/addressAlias.test.ts
similarity index 100%
rename from tests/unit/addressAlias.test.ts
rename to packages/sdk/tests/unit/addressAlias.test.ts
diff --git a/tests/unit/calldata.test.ts b/packages/sdk/tests/unit/calldata.test.ts
similarity index 100%
rename from tests/unit/calldata.test.ts
rename to packages/sdk/tests/unit/calldata.test.ts
diff --git a/tests/unit/childBlocksForL1Block.test.ts b/packages/sdk/tests/unit/childBlocksForL1Block.test.ts
similarity index 100%
rename from tests/unit/childBlocksForL1Block.test.ts
rename to packages/sdk/tests/unit/childBlocksForL1Block.test.ts
diff --git a/tests/unit/childToParentMessageEvents.test.ts b/packages/sdk/tests/unit/childToParentMessageEvents.test.ts
similarity index 100%
rename from tests/unit/childToParentMessageEvents.test.ts
rename to packages/sdk/tests/unit/childToParentMessageEvents.test.ts
diff --git a/tests/unit/messageDataParser.test.ts b/packages/sdk/tests/unit/messageDataParser.test.ts
similarity index 100%
rename from tests/unit/messageDataParser.test.ts
rename to packages/sdk/tests/unit/messageDataParser.test.ts
diff --git a/tests/unit/multicall.test.ts b/packages/sdk/tests/unit/multicall.test.ts
similarity index 100%
rename from tests/unit/multicall.test.ts
rename to packages/sdk/tests/unit/multicall.test.ts
diff --git a/tests/unit/nativeToken.test.ts b/packages/sdk/tests/unit/nativeToken.test.ts
similarity index 100%
rename from tests/unit/nativeToken.test.ts
rename to packages/sdk/tests/unit/nativeToken.test.ts
diff --git a/tests/unit/network.test.ts b/packages/sdk/tests/unit/network.test.ts
similarity index 100%
rename from tests/unit/network.test.ts
rename to packages/sdk/tests/unit/network.test.ts
diff --git a/tests/unit/parentToChildMessageEvents.test.ts b/packages/sdk/tests/unit/parentToChildMessageEvents.test.ts
similarity index 100%
rename from tests/unit/parentToChildMessageEvents.test.ts
rename to packages/sdk/tests/unit/parentToChildMessageEvents.test.ts
diff --git a/packages/sdk/tsconfig.json b/packages/sdk/tsconfig.json
new file mode 100644
index 0000000000..1e92aa929c
--- /dev/null
+++ b/packages/sdk/tsconfig.json
@@ -0,0 +1,9 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "./src",
+    "outDir": "./dist"
+  },
+  "include": ["src/**/*.ts", "src/**/*.d.ts"],
+  "exclude": ["node_modules", "dist", "tests", "scripts"]
+}
diff --git a/typedoc.json b/packages/sdk/typedoc.json
similarity index 100%
rename from typedoc.json
rename to packages/sdk/typedoc.json
diff --git a/typedoc_md.js b/packages/sdk/typedoc_md.js
similarity index 100%
rename from typedoc_md.js
rename to packages/sdk/typedoc_md.js
diff --git a/tsconfig.json b/tsconfig.json
index 3a5901b621..333b8b6aa1 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,8 +3,6 @@
     "target": "ES2017",
     "module": "commonjs",
     "declaration": true,
-    "rootDir": "./src",
-    "outDir": "./dist",
     "strict": true,
     "allowJs": true,
     "noImplicitAny": true,
@@ -14,7 +12,9 @@
     "noImplicitThis": true,
     "resolveJsonModule": true,
     "esModuleInterop": true,
-    "experimentalDecorators": true
-  },
-  "include": ["src/**/*.ts", "src/**/*.d.ts", "src/**/*.js"]
+    "experimentalDecorators": true,
+    "paths": {
+      "@ethersproject/*": ["./node_modules/@ethersproject/*"]
+    }
+  }
 }