Binance

Binance Spot WebSocket API

The Binance Spot WebSocket API provides an alternative way to access spot trading functionality through persistent WebSocket connections. It is functionally equivalent to the REST API, accepting the same parameters and returning the same status and error codes, but offers lower latency for time-sensitive trading operations.

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AsyncAPI Specification

asyncapi: 2.6.0
info:
  title: Binance Spot WebSocket API
  description: >-
    The Binance Spot WebSocket API provides an alternative way to access
    spot trading functionality through persistent WebSocket connections. It
    is functionally equivalent to the REST API, accepting the same parameters
    and returning the same status and error codes, but offers lower latency
    for time-sensitive trading operations. Developers can place orders, cancel
    orders, and query account information over a single WebSocket connection.
  version: '1.0.0'
  contact:
    name: Binance Support
    url: https://www.binance.com/en/support
  externalDocs:
    description: Binance Spot WebSocket API Documentation
    url: https://developers.binance.com/docs/binance-spot-api-docs/web-socket-api
servers:
  production:
    url: wss://ws-api.binance.com:443/ws-api/v3
    protocol: wss
    description: >-
      Production WebSocket API server for spot trading operations.
  testnet:
    url: wss://testnet.binance.vision/ws-api/v3
    protocol: wss
    description: >-
      Testnet WebSocket API server.
channels:
  /:
    description: >-
      Single WebSocket connection for sending trading requests and
      receiving responses. All requests and responses are JSON-formatted
      messages on this channel. Requests include a method name and
      parameters; responses include a matching id field.
    publish:
      operationId: receiveResponse
      summary: Receive API responses
      message:
        oneOf:
          - $ref: '#/components/messages/OrderResponse'
          - $ref: '#/components/messages/AccountResponse'
          - $ref: '#/components/messages/MarketDataResponse'
          - $ref: '#/components/messages/ErrorResponse'
    subscribe:
      operationId: sendRequest
      summary: Send API requests
      message:
        oneOf:
          - $ref: '#/components/messages/OrderRequest'
          - $ref: '#/components/messages/CancelOrderRequest'
          - $ref: '#/components/messages/AccountRequest'
          - $ref: '#/components/messages/MarketDataRequest'
components:
  messages:
    OrderRequest:
      name: orderRequest
      title: Order Request
      summary: >-
        Request to place a new order via WebSocket.
      payload:
        type: object
        properties:
          id:
            type: string
            description: >-
              Arbitrary ID used to match responses.
          method:
            type: string
            description: >-
              Method name, e.g. order.place.
            enum:
              - order.place
              - order.test
          params:
            type: object
            description: >-
              Order parameters matching REST API.
            properties:
              symbol:
                type: string
              side:
                type: string
                enum: [BUY, SELL]
              type:
                type: string
              timeInForce:
                type: string
              price:
                type: string
              quantity:
                type: string
              apiKey:
                type: string
              signature:
                type: string
              timestamp:
                type: integer
                format: int64
    CancelOrderRequest:
      name: cancelOrderRequest
      title: Cancel Order Request
      summary: >-
        Request to cancel an order via WebSocket.
      payload:
        type: object
        properties:
          id:
            type: string
          method:
            type: string
            enum:
              - order.cancel
              - openOrders.cancelAll
          params:
            type: object
            properties:
              symbol:
                type: string
              orderId:
                type: integer
                format: int64
              origClientOrderId:
                type: string
              apiKey:
                type: string
              signature:
                type: string
              timestamp:
                type: integer
                format: int64
    AccountRequest:
      name: accountRequest
      title: Account Request
      summary: >-
        Request for account information via WebSocket.
      payload:
        type: object
        properties:
          id:
            type: string
          method:
            type: string
            enum:
              - account.status
              - order.status
              - openOrders.status
              - allOrders
              - myTrades
          params:
            type: object
            properties:
              symbol:
                type: string
              apiKey:
                type: string
              signature:
                type: string
              timestamp:
                type: integer
                format: int64
    MarketDataRequest:
      name: marketDataRequest
      title: Market Data Request
      summary: >-
        Request for market data via WebSocket.
      payload:
        type: object
        properties:
          id:
            type: string
          method:
            type: string
            enum:
              - ping
              - time
              - exchangeInfo
              - depth
              - trades.recent
              - trades.historical
              - trades.aggregate
              - klines
              - avgPrice
              - ticker.24hr
              - ticker.price
              - ticker.book
          params:
            type: object
            properties:
              symbol:
                type: string
              symbols:
                type: array
                items:
                  type: string
              limit:
                type: integer
    OrderResponse:
      name: orderResponse
      title: Order Response
      summary: >-
        Response to an order request.
      payload:
        type: object
        properties:
          id:
            type: string
          status:
            type: integer
          result:
            type: object
            properties:
              symbol:
                type: string
              orderId:
                type: integer
                format: int64
              clientOrderId:
                type: string
              transactTime:
                type: integer
                format: int64
              price:
                type: string
              origQty:
                type: string
              executedQty:
                type: string
              status:
                type: string
              timeInForce:
                type: string
              type:
                type: string
              side:
                type: string
          rateLimits:
            type: array
            items:
              type: object
    AccountResponse:
      name: accountResponse
      title: Account Response
      summary: >-
        Response to an account query.
      payload:
        type: object
        properties:
          id:
            type: string
          status:
            type: integer
          result:
            type: object
    MarketDataResponse:
      name: marketDataResponse
      title: Market Data Response
      summary: >-
        Response to a market data query.
      payload:
        type: object
        properties:
          id:
            type: string
          status:
            type: integer
          result:
            type: object
    ErrorResponse:
      name: errorResponse
      title: Error Response
      summary: >-
        Error response for failed requests.
      payload:
        type: object
        properties:
          id:
            type: string
          status:
            type: integer
          error:
            type: object
            properties:
              code:
                type: integer
              msg:
                type: string