twelvearrays / alpaca-trade-api-js

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Alpaca Trade API JS

npm version CircleCI

Node.js library for Alpaca Trade API.

API Documentation

The REST API documentation can be found in For detailed information about an endpoint, please consult the REST API docs. Documentation specific to this library can be found below.


npm install --save @alpacahq/alpaca-trade-api


Import the module first.

const Alpaca = require('@alpacahq/alpaca-trade-api')

Instantiate the API with config options, obtained from the dashboard at

const alpaca = new Alpaca({
  keyId: 'AKFZXJH121U18SHHDRFO',
  secretKey: 'pnq4YHlpMF3LhfLyOvmdfLmlz6BnASrTPQIASeiU',
  paper: true,

Note: keyId and secretKey may also be specified by setting the APCA_API_KEY_ID and APCA_API_SECRET_KEY environment variables, respectively. Also, rather than specifying paper, you may set APCA_API_BASE_URL as an environment variable to direct your API calls to the paper trading API.

Call methods, which will return a promise.

alpaca.getAccount().then((account) => {
  console.log('Current Account:', account)

The websocket api is a good way to watch and react to the market

const client = alpaca.websocket
client.onConnect(function() {
  client.subscribe(['trade_updates', 'account_updates', 'T.FB', 'Q.AAPL', 'A.FB', 'AM.AAPL'])
  setTimeout(() => {
  }, 30 * 1000)
client.onDisconnect(() => {
client.onStateChange(newState => {
  console.log(`State changed to ${newState}`)
client.onOrderUpdate(data => {
  console.log(`Order updates: ${JSON.stringify(data)}`)
client.onAccountUpdate(data => {
  console.log(`Account updates: ${JSON.stringify(data)}`)
client.onStockTrades(function(subject, data) {
  console.log(`Stock trades: ${subject}, ${data}`)
client.onStockQuotes(function(subject, data) {
  console.log(`Stock quotes: ${subject}, ${data}`)
client.onStockAggSec(function(subject, data) {
  console.log(`Stock agg sec: ${subject}, ${data}`)
client.onStockAggMin(function(subject, data) {
  console.log(`Stock agg min: ${subject}, ${data}`)


As a general rule, required method parameters are passed as plain function arguments, and the final parameter is an object containing any optional parameters to the method.

Account API

Get Account

Calls GET /account and returns the current account.

getAccount() => Promise<Account>

Account Configurations API

Get Account Configurations

Calls GET /account/configurations and returns the current account configurations.

getAccountConfigurations() => Promise<AccountConfigurations>

Update Account Configurations

Calls PATCH /account/configurations to update the account configurations, and returns the updated configurations.

updateAccountConfigurations(AccountConfigurations) => Promise<AccountConfigurations>

Get Account Activities

Calls GET /account/activities and returns account actvities.

  activityTypes: string | string[], // Any valid activity type
  until: Date,
  after: Date,
  direction: string,
  date: Date,
  pageSize: number
}) => Promise<AccountActivity[]>

Orders API

Create Order

Calls POST /orders and creates a new order.

  symbol: string, // any valid ticker symbol
  qty: number,
  side: 'buy' | 'sell',
  type: 'market' | 'limit' | 'stop' | 'stop_limit',
  time_in_force: 'day' | 'gtc' | 'opg' | 'ioc',
  limit_price: number,
  stop_price: number,
  client_order_id: string // optional
}) => Promise<Order>

Get Orders

Calls GET /orders and returns a list of orders.

  status: 'open' | 'closed' | 'all',
  after: Date,
  until: Date,
  limit: number,
  direction: 'asc' | 'desc'
}) => Promise<Order[]>

Get Order by ID

Calls GET /orders/{id} and returns an order.

getOrder(uuid) => Promise<Order>

Get Order by Client ID

Calls GET /orders:by_client_order_id and returns an order by client_order_id. You can set client_order_id upon order creation to more easily keep track of your orders.

getOrderByClientOrderId(string) => Promise<Order>

Update Order by ID

Calls PATCH /orders/{id} and updates an existing open order. The updated order will have a new ID.

replaceOrder(uuid) => Promise<Order>

Cancel Order

Calls DELETE /orders/{id} and deletes an order.

cancelOrder(uuid) => Promise

Cancel all Orders

Calls DELETE /orders and deletes all open orders.

cancelAllOrders() => Promise

Positions API

Get Position

Calls GET /positions/{symbol} and returns a position.

getPosition(symbol) => Promise<Position>

Get All Positions

Calls GET /positions and returns all positions.

getPositions() => Promise<Position[]>

Close a Position

Calls DELETE /positions/{symbol} and liquidates your position in the given symbol.

closePosition(symbol) => Promise

Close all Positions

Calls DELETE /positions and liquidates all open positions.

closeAllPositions() => Promise

Assets API

Get All Assets

Calls GET /assets and returns assets matching your parameters.

  status: 'active' | 'inactive',
  asset_class: string
}) => Promise<Asset[]>

Get information about an asset

Calls GET /assets/{symbol} and returns an asset entity.

getAsset(symbol) => Promise<Asset>

Calendar API

Calls GET /calendar and returns the market calendar.

getCalendar({ start: Date, end: Date }) => Promise<Calendar[]>

Data API

Get Bars

  'minute' | '1Min' | '5Min' | '15Min' | 'day' | '1D',
  symbol | symbol[], // which ticker symbols to get bars for
    limit: number,
    start: Date,
    end: Date,
    after: Date,
    until: Date
) => Promise<BarsObject>


  • let websocket = alpaca.websocket: Create a websocket client instance.
  • websocket.connect(): Connect to the Alpaca server using websocket.
  • websocket.subscribe(channels): Subscribe to the Alpaca server and possibly the Polygon server.
    Possible channels: ['trade_updates', 'account_updates', 'T.*', 'Q.*', 'A.*', 'AM.*'].
    This will unsubscribe from any previously subscribed channels. Channels 'trade_updates' and 'account_updates' are for the Alpaca server; the rest are for the Polygon server. In order to make calls to the Polygon API, you must have opened your Alpaca brokerage account. Otherwise Polygon's API will be unavailable.
  • websocket.onOrderUpdate(function(data)): Register callback function for the channel 'trade_updates'.
  • websocket.onAccountUpdate(function(data)): Register callback function for the channel 'account_updates'.
  • websocket.onStockTrades(function(data)): Register callback function for the channel 'T.*'.
  • websocket.onStockQuotes(function(data)): Register callback function for the channel 'Q.*'.
  • websocket.onStockAggSec(function(data)): Register callback function for the channel 'A.*'.
  • websocket.onStockAggMin(function(data)): Register callback function for the channel 'AM.*'.
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License:Apache License 2.0


Language:JavaScript 100.0%