diff --git a/package-lock.json b/package-lock.json
index 6f69ce7..ace2807 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -8127,12 +4136,6 @@
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@@ -8147,15 +4150,6 @@
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@@ -8180,69 +4174,6 @@
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-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
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@@ -8253,82 +4184,6 @@
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-          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E=",
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-      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
-      "dev": true,
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-          "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
-          "dev": true
-        }
-      }
-    },
-    "urix": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
-      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
-      "dev": true
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     "url-set-query": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/url-set-query/-/url-set-query-1.0.0.tgz",
@@ -8343,12 +4198,6 @@
         "nan": "^2.3.3"
       }
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@@ -8482,18 +4331,9 @@
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     "whatwg-fetch": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz",
-      "integrity": "sha512-dcQ1GWpOD/eEQ97k66aiEVpNnapVj90/+R+SXTPYGHpYBBypfKJEQjLrvMZ7YXbKm21gXd4NcuxUTjiv1YtLng=="
-    },
-    "which": {
-      "version": "1.3.1",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
-      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
-      "dev": true,
-      "requires": {
-        "isexe": "^2.0.0"
-      }
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-fetch/-/whatwg-fetch-3.0.0.tgz",
+      "integrity": "sha512-9GSJUgz1D4MfyKU7KRqwOjXCXTqWdFNvEr7eUBYchQiVc744mqK/MzXPNR2WsPkmkOa4ywfg8C2n8h+13Bey1Q=="
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@@ -8519,15 +4359,6 @@
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-    "write": {
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-      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
-      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
-      "dev": true,
-      "requires": {
-        "mkdirp": "^0.5.1"
-      }
-    },
     "ws": {
       "version": "5.2.2",
       "resolved": "https://registry.npmjs.org/ws/-/ws-5.2.2.tgz",
diff --git a/package.json b/package.json
index 6c7cc0b..36d115d 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,8 @@
   "main": "dist/squid.js",
   "scripts": {
     "test": "eslint ./src",
-    "start": "babel ./src/ --watch --out-dir ./dist/",
-    "build": "babel ./src/ --out-dir ./dist/",
+    "start": "tsc -w",
+    "build": "tsc",
     "release": "./node_modules/release-it/bin/release-it.js --src.tagName='v%s' --github.release --npm.publish --non-interactive",
     "release-minor": "./node_modules/release-it/bin/release-it.js minor --src.tagName='v%s' --github.release --npm.publish --non-interactive",
     "release-major": "./node_modules/release-it/bin/release-it.js major --src.tagName='v%s' --github.release --npm.publish --non-interactive",
@@ -24,27 +24,16 @@
   },
   "homepage": "https://github.com/oceanprotocol/squid-js#readme",
   "dependencies": {
-    "@babel/runtime": "^7.0.0",
     "@oceanprotocol/keeper-contracts": "^0.2.0",
+    "bn.js": "^4.11.8",
     "truffle-contract": "^3.0.6",
-    "web3": "0.20.6"
-  },
-  "devDependencies": {
-    "@babel/cli": "^7.0.0",
-    "@babel/core": "^7.0.1",
-    "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
-    "@babel/plugin-transform-runtime": "^7.0.0",
-    "@babel/preset-env": "^7.0.0",
-    "eslint": "^5.5.0",
-    "eslint-config-oceanprotocol": "^1.2.0",
-    "eslint-config-standard": "^12.0.0",
-    "eslint-plugin-import": "^2.14.0",
-    "eslint-plugin-node": "^7.0.1",
-    "eslint-plugin-promise": "^4.0.0",
-    "eslint-plugin-security": "^1.4.0",
-    "eslint-plugin-standard": "^4.0.0"
+    "web3": "0.20.6",
+    "whatwg-fetch": "^3.0.0"
   },
   "engines": {
     "node": ">=8 <10"
+  },
+  "devDependencies": {
+    "@types/web3": "^1.0.6"
   }
 }
diff --git a/src/deprecated/ocean-agent.js b/src/deprecated/ocean-agent.js
deleted file mode 100644
index ee8318a..0000000
--- a/src/deprecated/ocean-agent.js
+++ /dev/null
@@ -1,39 +0,0 @@
-/* global fetch */
-import Logger from '../utils/logger'
-
-export default class OceanAgent {
-    constructor(connectionUrl) {
-        this.assetsUrl = connectionUrl + '/assets'
-
-        Logger.warn('OceanAgent is deprecated use the Ocean object from squid instead')
-    }
-
-    getAssetsMetadata() {
-        return fetch(this.assetsUrl + '/metadata', { method: 'GET' })
-            .then(res => res.json())
-            .then(data => JSON.parse(data))
-    }
-
-    publishDataAsset(asset) {
-        return fetch(this.assetsUrl + '/metadata',
-            {
-                method: 'POST',
-                body: JSON.stringify(asset),
-                headers: { 'Content-type': 'application/json' }
-            })
-            .then(response => {
-                Logger.log('Success:', response)
-                if (response.ok) {
-                    Logger.log('Success:', response)
-                    return true
-                }
-                Logger.log('Failed: ', response.status, response.statusText)
-                return false
-                // throw new Error(response.statusText ? response.statusText : `publish asset failed with status ${response.status}`)
-            })
-            .catch(error => {
-                Logger.log(`Publish asset to ocean database could not be completed: ${error.message()}`)
-                return false
-            })
-    }
-}
diff --git a/src/deprecated/ocean-keeper.js b/src/deprecated/ocean-keeper.js
deleted file mode 100644
index 4a7639b..0000000
--- a/src/deprecated/ocean-keeper.js
+++ /dev/null
@@ -1,181 +0,0 @@
-import Web3 from 'web3'
-import ContractLoader from '../keeper/contractLoader'
-import Logger from '../utils/logger'
-
-const DEFAULT_GAS = 300000
-
-export default class OceanKeeper {
-    constructor(uri, network) {
-        const web3Provider = new Web3.providers.HttpProvider(uri)
-        this.web3 = new Web3(web3Provider)
-        this.defaultGas = DEFAULT_GAS
-        this.network = network || 'development'
-
-        Logger.warn('OceanKeeper is deprecated use the Ocean object from squid instead')
-    }
-
-    async initContracts() {
-        this.oceanToken = await ContractLoader.load('OceanToken', this.network, this.web3)
-        this.oceanMarket = await ContractLoader.load('OceanMarket', this.network, this.web3)
-        this.oceanAuth = await ContractLoader.load('OceanAuth', this.network, this.web3)
-
-        return {
-            oceanToken: this.oceanToken,
-            oceanMarket: this.oceanMarket,
-            oceanAuth: this.oceanAuth
-        }
-    }
-
-    // web3 wrappers
-    sign(accountAddress, message) {
-        return this.web3.eth.sign(accountAddress, message)
-    }
-
-    getMessageHash(message) {
-        return this.web3.sha3(`\x19Ethereum Signed Message:\n${message.length}${message}`)
-    }
-
-    // call functions (costs no gas)
-    checkAsset(assetId) {
-        return this.oceanMarket.checkAsset(assetId)
-    }
-
-    getBalance(accountAddress) {
-        return this.oceanToken.balanceOf.call(accountAddress)
-    }
-
-    getAssetPrice(assetId) {
-        return this.oceanMarket.getAssetPrice(assetId).then((price) => price.toNumber())
-    }
-
-    getOrderStatus(orderId) {
-        return this.oceanAuth.statusOfAccessRequest(orderId)
-    }
-
-    verifyOrderPayment(orderId) {
-        return this.oceanMarket.verifyPaymentReceived(orderId)
-    }
-
-    getEncryptedAccessToken(orderId, senderAddress) {
-        return this.oceanAuth.getEncryptedAccessToken(orderId, { from: senderAddress })
-    }
-
-    async getConsumerOrders(consumerAddress) {
-        let accessConsentEvent = this.oceanAuth.AccessConsentRequested({ _consumer: consumerAddress }, {
-            fromBlock: 0,
-            toBlock: 'latest'
-        })
-
-        let _resolve = null
-        let _reject = null
-        const promise = new Promise((resolve, reject) => {
-            _resolve = resolve
-            _reject = reject
-        })
-
-        const getEvents = () => {
-            accessConsentEvent.get((error, logs) => {
-                if (error) {
-                    _reject(error)
-                    throw new Error(error)
-                } else {
-                    _resolve(logs)
-                }
-            })
-            return promise
-        }
-        const events = await getEvents().then((events) => events)
-        // let orders = await this.buildOrdersFromEvents(events, consumerAddress).then((result) => result)
-        let orders = events
-            .filter(obj => (obj.args._consumer === consumerAddress))
-            .map(async (event) => ({
-                ...event.args,
-                timeout: event.args._timeout.toNumber(),
-                status: await this.getOrderStatus(event.args._id).then((status) => status.toNumber()),
-                paid: await this.verifyOrderPayment(event.args._id).then((received) => received),
-                key: null
-            }))
-        Logger.debug('got orders: ', orders)
-        return orders
-    }
-
-    // Transactions with gas cost
-    requestTokens(senderAddress, numTokens) {
-        return this.oceanMarket.requestTokens(numTokens, { from: senderAddress })
-    }
-
-    async registerDataAsset(name, description, price, publisherAddress) {
-        const assetId = await this.oceanMarket.generateId(name + description)
-        const result = await this.oceanMarket.register(
-            assetId,
-            price,
-            { from: publisherAddress, gas: this.defaultGas }
-        )
-        Logger.log('registered: ', result)
-        return assetId
-    }
-
-    async sendPayment(assetId, order, publisherAddress, senderAddress) {
-        let assetPrice = await this.oceanMarket.getAssetPrice(assetId).then((price) => price.toNumber())
-        this.oceanMarket.sendPayment(order.id, publisherAddress, assetPrice, order.timeout, {
-            from: senderAddress,
-            gas: 2000000
-        })
-    }
-
-    cancelAccessRequest(orderId, senderAddress) {
-        return this.oceanAuth.cancelAccessRequest(orderId, { from: senderAddress })
-    }
-
-    orchestrateResourcePurchase(
-        assetId, publisherId, price, privateKey, publicKey, timeout, senderAddress,
-        initialRequestEventHandler, accessCommittedEventHandler, tokenPublishedEventHandler) {
-        const { oceanToken, oceanMarket, oceanAuth } = this
-        // Allow OceanMarket contract to transfer funds on the consumer's behalf
-        oceanToken.approve(oceanMarket.address, price, { from: senderAddress, gas: 2000000 })
-        // Submit the access request
-        oceanAuth.initiateAccessRequest(
-            assetId, publisherId, publicKey,
-            timeout, { from: senderAddress, gas: 1000000 }
-        )
-
-        const resourceFilter = { _resourceId: assetId, _consumer: senderAddress }
-        const initRequestEvent = oceanAuth.AccessConsentRequested(resourceFilter)
-        let order = {}
-        this._listenOnce(
-            initRequestEvent,
-            'AccessConsentRequested',
-            (result, error) => {
-                order = initialRequestEventHandler(result, error)
-                const requestIdFilter = { _id: order.id }
-                const accessCommittedEvent = oceanAuth.AccessRequestCommitted(requestIdFilter)
-                const tokenPublishedEvent = oceanAuth.EncryptedTokenPublished(requestIdFilter)
-                this._listenOnce(
-                    accessCommittedEvent,
-                    'AccessRequestCommitted',
-                    (result, error) => {
-                        accessCommittedEventHandler(result, order, error)
-                    }
-                )
-                this._listenOnce(
-                    tokenPublishedEvent,
-                    'EncryptedTokenPublished',
-                    (result, error) => {
-                        tokenPublishedEventHandler(result, order, error)
-                    }
-                )
-            })
-        return order
-    }
-
-    // Helper functions (private)
-    _listenOnce(event, eventName, callback) {
-        event.watch((error, result) => { // eslint-disable-line security/detect-non-literal-fs-filename
-            event.stopWatching()
-            if (error) {
-                Logger.log(`Error in keeper ${eventName} event: `, error)
-            }
-            callback(result, error)
-        })
-    }
-}
diff --git a/src/keeper/auth.js b/src/keeper/auth.js
deleted file mode 100644
index 616d874..0000000
--- a/src/keeper/auth.js
+++ /dev/null
@@ -1,25 +0,0 @@
-import ContractLoader from './contractLoader'
-import KeeperBase from './keeper-base'
-
-export default class OceanAuth extends KeeperBase {
-    constructor(web3Helper) {
-        super(web3Helper)
-
-        return (async () => {
-            this.contract = await ContractLoader.load('OceanAuth', this._web3Helper)
-            return this
-        })()
-    }
-
-    cancelAccessRequest(orderId, senderAddress) {
-        return this.contract.cancelAccessRequest(orderId, { from: senderAddress })
-    }
-
-    getOrderStatus(orderId) {
-        return this.contract.statusOfAccessRequest(orderId)
-    }
-
-    getEncryptedAccessToken(orderId, senderAddress) {
-        return this.contract.getEncryptedAccessToken(orderId, { from: senderAddress })
-    }
-}
diff --git a/src/keeper/auth.ts b/src/keeper/auth.ts
new file mode 100644
index 0000000..9d64140
--- /dev/null
+++ b/src/keeper/auth.ts
@@ -0,0 +1,30 @@
+import ContractLoader from './contractLoader'
+import KeeperBase from './keeper-base'
+import Web3Helper from "../utils/Web3Helper";
+import Config from "../utils/config";
+
+export default class OceanAuth extends KeeperBase {
+
+    private constructor(config: Config, web3Helper: Web3Helper) {
+        super(config, web3Helper)
+    }
+
+    public static async getInstance(config: Config, web3Helper) {
+        const auth = new OceanAuth(config, web3Helper);
+
+        auth.contract = await ContractLoader.load('OceanAuth', auth._web3Helper)
+        return auth;
+    }
+
+    cancelAccessRequest(orderId: string, senderAddress: string) {
+        return this.contract.cancelAccessRequest(orderId, {from: senderAddress})
+    }
+
+    getOrderStatus(orderId: string) {
+        return this.contract.statusOfAccessRequest(orderId)
+    }
+
+    getEncryptedAccessToken(orderId: string, senderAddress: string) {
+        return this.contract.getEncryptedAccessToken(orderId, {from: senderAddress})
+    }
+}
diff --git a/src/keeper/contractLoader.js b/src/keeper/contractLoader.ts
similarity index 60%
rename from src/keeper/contractLoader.js
rename to src/keeper/contractLoader.ts
index 0f51ec8..7041130 100644
--- a/src/keeper/contractLoader.js
+++ b/src/keeper/contractLoader.ts
@@ -1,10 +1,11 @@
-import TruffleContract from 'truffle-contract'
+import * as TruffleContract from 'truffle-contract'
 import Logger from '../utils/logger'
+import Web3Helper from '../utils/Web3Helper'
 
-const contracts = []
+const contracts: Map<string, object> = new Map<string, object>()
 
 export default class ContractLoader {
-    static async _doLoad(what, web3Helper) {
+    static async _doLoad(what: string, web3Helper: Web3Helper): Promise<object> {
         const where = (await web3Helper.getNetworkName()).toLowerCase()
         Logger.log('Loading', what, 'from', where)
         try {
@@ -15,14 +16,14 @@ export default class ContractLoader {
             const contract = TruffleContract(artifact)
             Logger.log('Getting instance of', what, 'from', where, 'at', artifact.address)
             contract.setProvider(web3Helper.web3.currentProvider)
-            contracts[what] = await contract.at(artifact.address)
-            return contracts[what]
+            contracts.set(what, await contract.at(artifact.address))
+            return contracts.get(what)
         } catch (err) {
             Logger.error('Failed to load', what, 'from', where)
         }
     }
 
-    static async load(what, where, provider) {
-        return contracts[what] || ContractLoader._doLoad(what, where, provider)
+    static async load(what: string, web3Helper: Web3Helper) {
+        return contracts.get(what) || await ContractLoader._doLoad(what, web3Helper)
     }
 }
diff --git a/src/keeper/keeper-base.js b/src/keeper/keeper-base.js
deleted file mode 100644
index e9e5b85..0000000
--- a/src/keeper/keeper-base.js
+++ /dev/null
@@ -1,6 +0,0 @@
-export default class KeeperBase {
-    constructor(web3Helper) {
-        this._web3Helper = web3Helper
-        this.contract = null
-    }
-}
diff --git a/src/keeper/keeper-base.ts b/src/keeper/keeper-base.ts
new file mode 100644
index 0000000..40b9c82
--- /dev/null
+++ b/src/keeper/keeper-base.ts
@@ -0,0 +1,14 @@
+import Web3Helper from '../utils/Web3Helper'
+import Config from "../utils/config";
+
+export default class KeeperBase {
+
+    protected _config: Config
+    protected _web3Helper: Web3Helper;
+    public contract: any = null;
+
+    constructor(config: Config, web3Helper: Web3Helper) {
+        this._config = config;
+        this._web3Helper = web3Helper
+    }
+}
diff --git a/src/keeper/market.js b/src/keeper/market.js
deleted file mode 100644
index 8b0dff5..0000000
--- a/src/keeper/market.js
+++ /dev/null
@@ -1,53 +0,0 @@
-import ContractLoader from './contractLoader'
-import KeeperBase from './keeper-base'
-
-import Logger from '../utils/logger'
-
-export default class OceanMarket extends KeeperBase {
-    constructor(web3Helper) {
-        super(web3Helper)
-
-        return (async () => {
-            this.contract = await ContractLoader.load('OceanMarket', this._web3Helper)
-            return this
-        })()
-    }
-
-    // call functions (costs no gas)
-    checkAsset(assetId) {
-        return this.contract.checkAsset(assetId)
-    }
-
-    verifyOrderPayment(orderId) {
-        return this.contract.verifyPaymentReceived(orderId)
-    }
-
-    getAssetPrice(assetId) {
-        return this.contract.getAssetPrice(assetId)
-            .then((price) => price.toNumber())
-    }
-
-    // Transactions with gas cost
-    requestTokens(amount, address) {
-        return this.contract.requestTokens(amount, { from: address })
-    }
-
-    async registerAsset(name, description, price, publisherAddress) {
-        const assetId = await this.contract.generateId(name + description)
-        const result = await this.contract.register(
-            assetId,
-            price,
-            { from: publisherAddress, gas: this.defaultGas }
-        )
-        Logger.log('registered: ', result)
-        return assetId
-    }
-
-    async payAsset(assetId, order, publisherAddress, senderAddress) {
-        let assetPrice = await this.contract.getAssetPrice(assetId).then((price) => price.toNumber())
-        this.contract.sendPayment(order.id, publisherAddress, assetPrice, order.timeout, {
-            from: senderAddress,
-            gas: 2000000
-        })
-    }
-}
diff --git a/src/keeper/market.ts b/src/keeper/market.ts
new file mode 100644
index 0000000..a539845
--- /dev/null
+++ b/src/keeper/market.ts
@@ -0,0 +1,61 @@
+import ContractLoader from './contractLoader'
+import KeeperBase from './keeper-base'
+import Logger from '../utils/logger'
+import Web3Helper from "../utils/Web3Helper";
+import BigNumber from "bignumber.js";
+import Config from "../utils/config";
+
+export default class OceanMarket extends KeeperBase {
+
+    private constructor(config: Config, web3Helper: Web3Helper) {
+        super(config, web3Helper)
+    }
+
+    public static async getInstance(config: Config, web3Helper: Web3Helper) {
+
+        const market = new OceanMarket(config, web3Helper);
+        market.contract = await ContractLoader.load('OceanMarket', market._web3Helper)
+        return market;
+    }
+
+    // call functions (costs no gas)
+    checkAsset(assetId: string) {
+        return this.contract.checkAsset(assetId)
+    }
+
+    verifyOrderPayment(orderId: string): boolean {
+        return this.contract.verifyPaymentReceived(orderId)
+    }
+
+    getAssetPrice(assetId: string) {
+        return this.contract.getAssetPrice(assetId)
+            .then((price: BigNumber) => price.toNumber())
+    }
+
+    // Transactions with gas cost
+    requestTokens(amount: number, address: string) {
+        return this.contract.requestTokens(amount, {from: address})
+    }
+
+    async registerAsset(name: string, description: string, price: number, publisherAddress: string) {
+        const assetId = await this.contract.generateId(name + description)
+        const result = await this.contract.register(
+            assetId,
+            price, {
+                from: publisherAddress, gas:
+                this._config.defaultGas
+            }
+        )
+        Logger.log('registered: ', result)
+        return assetId
+    }
+
+    async payAsset(assetId: string, order: any, publisherAddress: string, senderAddress: string) {
+        let assetPrice = await this.contract.getAssetPrice(assetId)
+            .then((price: BigNumber) => price.toNumber())
+        this.contract.sendPayment(order.id, publisherAddress, assetPrice, order.timeout, {
+            from: senderAddress,
+            gas: 2000000
+        })
+    }
+}
diff --git a/src/keeper/token.js b/src/keeper/token.js
deleted file mode 100644
index ea22835..0000000
--- a/src/keeper/token.js
+++ /dev/null
@@ -1,30 +0,0 @@
-import ContractLoader from './contractLoader'
-import KeeperBase from './keeper-base'
-import Logger from '../utils/logger'
-
-export default class OceanToken extends KeeperBase {
-    constructor(web3Helper) {
-        super(web3Helper)
-
-        return (async () => {
-            this.contract = await ContractLoader.load('OceanToken', this._web3Helper)
-
-            return this
-        })()
-    }
-
-    getTokenBalance(accountAddress) {
-        return this.contract.balanceOf.call(accountAddress)
-    }
-
-    async getEthBalance(account) {
-        return new Promise((resolve, reject) => {
-            Logger.log('getting balance for', account)
-            this._web3Helper.web3.eth.getBalance(account, 'latest', (err, balance) => {
-                if (err) return reject(err)
-                Logger.log('balance', balance)
-                resolve(balance)
-            })
-        })
-    }
-}
diff --git a/src/keeper/token.ts b/src/keeper/token.ts
new file mode 100644
index 0000000..baf658d
--- /dev/null
+++ b/src/keeper/token.ts
@@ -0,0 +1,34 @@
+import ContractLoader from './contractLoader'
+import KeeperBase from './keeper-base'
+import Logger from '../utils/logger'
+import Web3Helper from "../utils/Web3Helper"
+import Config from "../utils/config";
+
+export default class OceanToken extends KeeperBase {
+
+    private constructor(config: Config, web3Helper: Web3Helper) {
+        super(config, web3Helper)
+    }
+
+    public static async getInstance(config: Config, web3Helper: Web3Helper) {
+        const token = new OceanToken(config, web3Helper)
+        token.contract = await ContractLoader.load('OceanToken', token._web3Helper)
+
+        return token;
+    }
+
+    getTokenBalance(accountAddress: string) {
+        return this.contract.balanceOf.call(accountAddress)
+    }
+
+    async getEthBalance(account: string): Promise<number> {
+        return new Promise<number>((resolve, reject) => {
+            Logger.log('getting balance for', account)
+            this._web3Helper.web3.eth.getBalance(account, 'latest', (err: any, balance: number) => {
+                if (err) return reject(err)
+                Logger.log('balance', balance)
+                resolve(balance)
+            })
+        })
+    }
+}
diff --git a/src/metadata.js b/src/metadata.ts
similarity index 76%
rename from src/metadata.js
rename to src/metadata.ts
index cf3506c..51735fd 100644
--- a/src/metadata.js
+++ b/src/metadata.ts
@@ -1,8 +1,15 @@
-/* global fetch */
 import Logger from './utils/logger'
+import Config from "./utils/config";
+
+declare var fetch
 
 export default class MetaData {
-    constructor(providerUri) {
+
+    private assetsUrl: string;
+
+    constructor(config: Config) {
+        const providerUri = config.providerUri || null
+
         this.assetsUrl = providerUri + '/assets'
     }
 
@@ -12,14 +19,14 @@ export default class MetaData {
             .then(data => JSON.parse(data))
     }
 
-    publishDataAsset(asset) {
+    publishDataAsset(asset: object) {
         return fetch(this.assetsUrl + '/metadata',
             {
                 method: 'POST',
                 body: JSON.stringify(asset),
                 headers: { 'Content-type': 'application/json' }
             })
-            .then(response => {
+            .then((response: any) => {
                 Logger.log('Success:', response)
                 if (response.ok) {
                     Logger.log('Success:', response)
@@ -29,8 +36,8 @@ export default class MetaData {
                 return false
                 // throw new Error(response.statusText ? response.statusText : `publish asset failed with status ${response.status}`)
             })
-            .catch(error => {
-                Logger.log(`Publish asset to ocean database could not be completed: ${error.message()}`)
+            .catch((error: Error) => {
+                Logger.log(`Publish asset to ocean database could not be completed: ${error.message}`)
                 return false
             })
     }
diff --git a/src/ocean.js b/src/ocean.ts
similarity index 58%
rename from src/ocean.js
rename to src/ocean.ts
index 01cacb7..4c9fe56 100644
--- a/src/ocean.js
+++ b/src/ocean.ts
@@ -1,36 +1,43 @@
-import Web3 from 'web3'
 import OceanMarket from './keeper/market'
 import OceanAuth from './keeper/auth'
 import OceanToken from './keeper/token'
 import Logger from './utils/logger'
 import Web3Helper from './utils/Web3Helper'
 import MetaData from './metadata'
-
-const DEFAULT_GAS = 300000
+import BigNumber = require("bn.js")
+import Config from "./utils/config";
 
 export default class Ocean {
-    constructor(config) {
-        const web3Provider = config.web3Provider || new Web3.providers.HttpProvider(config.nodeUri)
-        this._web3 = new Web3(web3Provider)
-        this._defaultGas = config.gas || DEFAULT_GAS
-        this._providerUri = config.providerUri || null
 
-        this.helper = new Web3Helper(this._web3)
-        this.metadata = new MetaData(this._providerUri)
+    private _config: Config;
 
-        return (async () => {
-            this._network = config.network || (await this.helper.getNetworkName()).toLowerCase() || 'development'
+    public token: OceanToken;
+    public market: OceanMarket;
+    public auth: OceanAuth;
+    public helper: Web3Helper;
+    public metadata: MetaData;
 
-            this.market = await new OceanMarket(this.helper)
-            this.auth = await new OceanAuth(this.helper)
-            this.token = await new OceanToken(this.helper)
+    private constructor(config: Config) {
 
-            return this
-        })()
+        this._config = config;
+
+        this.helper = new Web3Helper(config)
+        this.metadata = new MetaData(config)
+    }
+
+    public static async getInstance(config) {
+
+        const ocean = new Ocean(config);
+
+        ocean.market = await OceanMarket.getInstance(config, ocean.helper)
+        ocean.auth = await OceanAuth.getInstance(config, ocean.helper)
+        ocean.token = await OceanToken.getInstance(config, ocean.helper)
+
+        return ocean;
     }
 
     async getAccounts() {
-        return Promise.all((await this.helper.getAccounts()).map(async (account) => {
+        return Promise.all((await this.helper.getAccounts()).map(async (account: string) => {
             // await ocean.market.requestTokens(account, 1000)
 
             return {
@@ -43,21 +50,21 @@ export default class Ocean {
         }))
     }
 
-    async getOrdersByConsumer(consumerAddress) {
-        let accessConsentEvent = this.auth.contract.AccessConsentRequested({ _consumer: consumerAddress }, {
+    async getOrdersByConsumer(consumerAddress: string) {
+        let accessConsentEvent = this.auth.contract.AccessConsentRequested({_consumer: consumerAddress}, {
             fromBlock: 0,
             toBlock: 'latest'
         })
 
-        let _resolve = null
-        let _reject = null
-        const promise = new Promise((resolve, reject) => {
+        let _resolve: Function = null
+        let _reject: Function = null
+        const promise = new Promise<any[]>((resolve, reject) => {
             _resolve = resolve
             _reject = reject
         })
 
-        const getEvents = () => {
-            accessConsentEvent.get((error, logs) => {
+        const getEvents = (): Promise<any[]> => {
+            accessConsentEvent.get((error: any, logs: any[]) => {
                 if (error) {
                     _reject(error)
                     throw new Error(error)
@@ -70,12 +77,13 @@ export default class Ocean {
         const events = await getEvents().then((events) => events)
         // let orders = await this.buildOrdersFromEvents(events, consumerAddress).then((result) => result)
         let orders = events
-            .filter(obj => (obj.args._consumer === consumerAddress))
-            .map(async (event) => ({
+            .filter((obj: any) => (obj.args._consumer === consumerAddress))
+            .map(async (event: any) => ({
                 ...event.args,
                 timeout: event.args._timeout.toNumber(),
-                status: await this.auth.getOrderStatus(event.args._id).then((status) => status.toNumber()),
-                paid: await this.market.verifyOrderPayment(event.args._id).then((received) => received),
+                status: await this.auth.getOrderStatus(event.args._id)
+                    .then((status: BigNumber) => status.toNumber()),
+                paid: this.market.verifyOrderPayment(event.args._id),
                 key: null
             }))
         Logger.debug('got orders: ', orders)
@@ -83,12 +91,12 @@ export default class Ocean {
     }
 
     async purchaseAsset(
-        assetId, publisherId, price, privateKey, publicKey, timeout, senderAddress,
-        initialRequestEventHandler, accessCommittedEventHandler, tokenPublishedEventHandler) {
-        const { token, market, auth } = this
+        assetId: string, publisherId: string, price: number, privateKey: string, publicKey: string, timeout: number, senderAddress: string,
+        initialRequestEventHandler: Function, accessCommittedEventHandler: Function, tokenPublishedEventHandler: Function) {
+        const {token: OceanToken, market: OceanMarket, auth} = this
         try {
             // Allow market contract to transfer funds on the consumer's behalf
-            await token.contract.approve(market.contract.address, price, { from: senderAddress, gas: 2000000 })
+            await this.token.contract.approve(this.market.contract.address, price, {from: senderAddress, gas: 2000000})
         } catch (err) {
             Logger.log('token approve', err)
         }
@@ -96,33 +104,33 @@ export default class Ocean {
             // Submit the access request
             await auth.contract.initiateAccessRequest(
                 assetId, publisherId, publicKey,
-                timeout, { from: senderAddress, gas: 1000000 }
+                timeout, {from: senderAddress, gas: 1000000}
             )
         } catch (err) {
             Logger.log('initiateAccessRequest', err)
         }
-        const resourceFilter = { _resourceId: assetId, _consumer: senderAddress }
+        const resourceFilter = {_resourceId: assetId, _consumer: senderAddress}
         const initRequestEvent = auth.contract.AccessConsentRequested(resourceFilter)
-        let order = {}
+        let order: any = {}
         this._listenOnce(
             initRequestEvent,
             'AccessConsentRequested',
-            (result, error) => {
+            (result: any, error: any) => {
                 order = initialRequestEventHandler(result, error)
-                const requestIdFilter = { _id: order.id }
+                const requestIdFilter = {_id: order.id}
                 const accessCommittedEvent = auth.contract.AccessRequestCommitted(requestIdFilter)
                 const tokenPublishedEvent = auth.contract.EncryptedTokenPublished(requestIdFilter)
                 this._listenOnce(
                     accessCommittedEvent,
                     'AccessRequestCommitted',
-                    (result, error) => {
+                    (result: any, error: any) => {
                         accessCommittedEventHandler(result, order, error)
                     }
                 )
                 this._listenOnce(
                     tokenPublishedEvent,
                     'EncryptedTokenPublished',
-                    (result, error) => {
+                    (result: any, error: any) => {
                         tokenPublishedEventHandler(result, order, error)
                     }
                 )
@@ -131,9 +139,9 @@ export default class Ocean {
     }
 
     // Helper functions (private)
-    _listenOnce(event, eventName, callback) {
+    _listenOnce(event: any, eventName: string, callback: Function) {
         // eslint-disable-next-line security/detect-non-literal-fs-filename
-        event.watch((error, result) => {
+        event.watch((error: any, result: any) => {
             event.stopWatching()
             if (error) {
                 Logger.log(`Error in keeper ${eventName} event: `, error)
diff --git a/src/squid.js b/src/squid.js
deleted file mode 100644
index 56160f6..0000000
--- a/src/squid.js
+++ /dev/null
@@ -1,11 +0,0 @@
-import OceanAgent from './deprecated/ocean-agent'
-import OceanKeeper from './deprecated/ocean-keeper'
-import Ocean from './ocean'
-import Logger from './utils/logger'
-
-export {
-    Ocean,
-    OceanAgent, // deprecated
-    OceanKeeper, // deprecated
-    Logger
-}
diff --git a/src/squid.ts b/src/squid.ts
new file mode 100644
index 0000000..5cdd22b
--- /dev/null
+++ b/src/squid.ts
@@ -0,0 +1,7 @@
+import Ocean from './ocean'
+import Logger from './utils/logger'
+
+export {
+    Ocean,
+    Logger
+}
diff --git a/src/utils/Web3Helper.js b/src/utils/Web3Helper.ts
similarity index 61%
rename from src/utils/Web3Helper.js
rename to src/utils/Web3Helper.ts
index 6454659..54183bc 100644
--- a/src/utils/Web3Helper.js
+++ b/src/utils/Web3Helper.ts
@@ -1,11 +1,16 @@
+import Web3 = require("web3");
+
 export default class Web3Helper {
-    constructor(web3) {
-        this.web3 = web3
+    public web3: Web3;
+
+    constructor(config: any) {
+        const web3Provider = config.web3Provider || new Web3.providers.HttpProvider(config.nodeUri)
+        this.web3 = new Web3(web3Provider)
     }
 
-    async getAccounts() {
-        return new Promise((resolve, reject) => {
-            this.web3.eth.getAccounts((err, accounts) => {
+    async getAccounts(): Promise<any[]> {
+        return new Promise<any[]>((resolve: Function, reject: Function) => {
+            this.web3.eth.getAccounts((err: any, accounts: string[]) => {
                 if (err) {
                     throw err
                 }
@@ -14,9 +19,10 @@ export default class Web3Helper {
         })
     }
 
-    async getNetworkName() {
-        return new Promise((resolve, reject) => {
-            let network = 'unknown'
+    async getNetworkName(): Promise<string> {
+        return new Promise<string>((resolve: Function, reject: Function) => {
+            let network: string = 'unknown'
+            // @ts-ignore old version of web3, lets get to 1.0
             this.web3.version.getNetwork((err, networkId) => {
                 if (err) {
                     throw err
@@ -46,7 +52,7 @@ export default class Web3Helper {
     }
 
     // web3 wrappers
-    sign(accountAddress, message) {
+    sign(accountAddress: string, message: string) {
         return this.web3.eth.sign(accountAddress, message)
     }
 }
diff --git a/src/utils/config.ts b/src/utils/config.ts
new file mode 100644
index 0000000..5c7676c
--- /dev/null
+++ b/src/utils/config.ts
@@ -0,0 +1,5 @@
+export default class Config {
+
+    public defaultGas: number = 300000;
+    public providerUri: string;
+}
diff --git a/src/utils/logger.js b/src/utils/logger.ts
similarity index 59%
rename from src/utils/logger.js
rename to src/utils/logger.ts
index 8a3b5a3..1f3372d 100644
--- a/src/utils/logger.js
+++ b/src/utils/logger.ts
@@ -1,22 +1,23 @@
 export default class Logger {
-    static dispatch(verb, ...args) {
+    static dispatch(verb: string, ...args: any[]) {
         /* eslint-disable-next-line no-console */
+        // @ts-ignore
         console[verb](...args)
     }
 
-    static log(...args) {
+    static log(...args: any[]) {
         Logger.dispatch('log', ...args)
     }
 
-    static debug(...args) {
+    static debug(...args: any[]) {
         Logger.dispatch('debug', ...args)
     }
 
-    static warn(...args) {
+    static warn(...args: any[]) {
         Logger.dispatch('warn', ...args)
     }
 
-    static error(...args) {
+    static error(...args: any[]) {
         Logger.dispatch('error', ...args)
     }
 }
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..6111d54
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "lib": [
+      "es6",
+      "es7"
+    ],
+    "module": "commonjs",
+    "noImplicitAny": false,
+    "removeComments": true,
+    "preserveConstEnums": true,
+    "outDir": "./dist/",
+    "rootDir": "./src/",
+    "sourceMap": true
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "node_modules",
+    "**/*.spec.ts"
+  ]
+}
\ No newline at end of file