Finage WebSocket Market Data Stream

asyncapi: 3.0.0
info:
  title: Finage WebSocket Market Data Stream
  version: 1.0.0
  description: >-
    Finage streams real-time market prices (US stocks, global stocks, forex,
    crypto, CFD indices, and ETFs) over WebSocket. Each customer is assigned a
    dedicated WebSocket URL (subdomain + port) shown in the Finage dashboard;
    connections authenticate with a token (socket key) query parameter. After
    connecting, the server sends two status messages ("authorizing", then
    "connected to the adapter") before streaming price updates. This AsyncAPI
    was derived by API Evangelist from Finage's WebSocket documentation
    (https://finage.co.uk/docs/websocket) and the published message-type models
    (https://api.finage.co.uk/op/v1/wstype/list); all message payload examples
    are verbatim from that source.
  contact:
    name: Finage Support
    email: support@finage.co.uk
    url: https://finage.co.uk
  externalDocs:
    description: Finage WebSocket documentation
    url: https://finage.co.uk/docs/websocket
  x-apievangelist:
    generated: '2026-07-22'
    method: derived
    source: https://finage.co.uk/docs/websocket + https://api.finage.co.uk/op/v1/wstype/list
servers:
  production:
    host: '{subdomain}.finage.ws:{port}'
    protocol: wss
    description: >-
      Your assigned WebSocket URL (subdomain and port) is shown in the Finage
      dashboard under the WebSocket section. Streams are divided into
      subdomains per market section for stability. Authenticate by appending
      ?token={socket key}. Documented error messages: "401 - invalid socket
      key", "401 - use your socket key to connect", "401 - please upgrade your
      package to access this market".
    variables:
      subdomain:
        description: Stream subdomain assigned to your account (shown in dashboard).
      port:
        description: Port of your assigned stream server (shown in dashboard).
channels:
  prices:
    address: /
    description: >-
      Single streaming channel. On connect the server sends ConnectionStatus
      messages, then real-time price update messages whose shape depends on the
      subscribed market (Finage message-type models Type2-Type10).
    messages:
      connectionStatus:
        $ref: '#/components/messages/connectionStatus'
      forexQuoteWithChange:
        $ref: '#/components/messages/forexQuoteWithChange'
      cryptoTradeWithChange:
        $ref: '#/components/messages/cryptoTradeWithChange'
      stockQuote:
        $ref: '#/components/messages/stockQuote'
      cryptoTrade:
        $ref: '#/components/messages/cryptoTrade'
      forexQuote:
        $ref: '#/components/messages/forexQuote'
      stockQuoteWithChange:
        $ref: '#/components/messages/stockQuoteWithChange'
      etfQuoteWithChange:
        $ref: '#/components/messages/etfQuoteWithChange'
operations:
  receivePrices:
    action: receive
    channel:
      $ref: '#/channels/prices'
    summary: Receive real-time price updates for subscribed symbols.
components:
  messages:
    connectionStatus:
      name: ConnectionStatus
      summary: Connection lifecycle status messages sent after connecting.
      payload:
        type: object
        properties:
          status_code:
            type: integer
          message:
            type: string
          id:
            type: string
      examples:
        - name: authorizing
          payload:
            status_code: 200
            message: authorizing
            id: e0fb1b68-1905-48e3-9fd2-d482bf5e1f0a
        - name: connected
          payload:
            status_code: 200
            message: connected to the adapter
            id: e0fb1b68-1905-48e3-9fd2-d482bf5e1f0a
    forexQuoteWithChange:
      name: Type2Model
      summary: Forex quote with daily change (Finage Type2Model).
      payload:
        type: object
        properties:
          s: {type: string, description: Symbol}
          a: {type: number, description: Ask price}
          b: {type: number, description: Bid price}
          dd: {type: string, description: Daily difference}
          dc: {type: string, description: Daily change percent}
          ppms: {type: boolean, description: Price per millisecond flag}
          t: {type: integer, description: Timestamp (ms)}
      examples:
        - payload:
            s: ZAR/EUR
            a: 0.05103271
            b: 0.05100465
            dd: '0.0002'
            dc: '0.4016'
            ppms: false
            t: 1680703141685
    cryptoTradeWithChange:
      name: Type3Model
      summary: Crypto trade with daily change (Finage Type3Model).
      payload:
        type: object
        properties:
          s: {type: string, description: Symbol}
          p: {type: string, description: Price}
          q: {type: string, description: Quantity}
          dc: {type: string, description: Daily change percent}
          dd: {type: string, description: Daily difference}
          t: {type: integer, description: Timestamp (ms)}
      examples:
        - payload:
            s: DOGEUSD
            p: '0.09649316'
            q: '22434.12483106'
            dc: '1.4147'
            dd: '0.0014'
            t: 1680704192819
    stockQuote:
      name: Type4Model
      summary: US stock quote (Finage Type4Model).
      payload:
        type: object
        properties:
          s: {type: string, description: Symbol}
          ap: {type: number, description: Ask price}
          bp: {type: number, description: Bid price}
          as: {type: integer, description: Ask size}
          bs: {type: integer, description: Bid size}
          t: {type: integer, description: Timestamp (ms)}
      examples:
        - payload:
            s: TSLA
            ap: 189.3
            bp: 189.27
            as: 3
            bs: 1
            t: 1714403004431
    cryptoTrade:
      name: Type5Model
      summary: Crypto trade (Finage Type5Model).
      payload:
        type: object
        properties:
          s: {type: string, description: Symbol}
          p: {type: string, description: Price}
          q: {type: string, description: Quantity}
          t: {type: integer, description: Timestamp (ms)}
      examples:
        - payload:
            s: HBARUSD
            p: '0.06648169'
            q: '340082.47302549'
            t: 1680704234267
    forexQuote:
      name: Type6Model
      summary: Forex quote (Finage Type6Model).
      payload:
        type: object
        properties:
          s: {type: string, description: Symbol}
          a: {type: number, description: Ask price}
          b: {type: number, description: Bid price}
          t: {type: integer, description: Timestamp (ms)}
      examples:
        - payload:
            s: EUR/USD
            a: 1.09229
            b: 1.09227
            t: 1680705338000
    stockQuoteWithChange:
      name: Type8Model
      summary: Stock quote with daily change (Finage Type8Model).
      payload:
        type: object
        properties:
          s: {type: string, description: Symbol}
          a: {type: number, description: Ask price}
          as: {type: integer, description: Ask size}
          b: {type: number, description: Bid price}
          bs: {type: integer, description: Bid size}
          dc: {type: number, description: Daily change percent}
          dd: {type: number, description: Daily difference}
          t: {type: integer, description: Timestamp (ms)}
      examples:
        - payload:
            s: GOOGL
            a: 167.989804
            as: 13
            b: 167.970446
            bs: 4
            dc: -1.9556
            dd: -3.2851
            t: 1714403502895
    etfQuoteWithChange:
      name: Type10Model
      summary: ETF quote with daily change (Finage Type10Model).
      payload:
        type: object
        properties:
          s: {type: string, description: Symbol}
          a: {type: number, description: Ask price}
          as: {type: integer, description: Ask size}
          b: {type: number, description: Bid price}
          bs: {type: integer, description: Bid size}
          dc: {type: number, description: Daily change percent}
          dd: {type: number, description: Daily difference}
          ppms: {type: boolean, description: Price per millisecond flag}
          t: {type: integer, description: Timestamp (ms)}
      examples:
        - payload:
            s: QQQ
            a: 458.610865
            as: 1
            b: 458.549806
            bs: 1
            dc: -0.4196
            dd: -1.924
            ppms: true
            t: 1725449608827