Trading Economics Streaming API (WebSocket)

asyncapi: '2.6.0'
id: 'urn:com:tradingeconomics:stream:websocket'
info:
  title: Trading Economics Streaming API (WebSocket)
  version: '1.0.0'
  description: |
    AsyncAPI 2.6 description of the Trading Economics **WebSocket streaming
    surface** at `wss://stream.tradingeconomics.com/`.

    Unlike many data providers whose "streaming" is HTTP polling or SSE,
    Trading Economics documents a true, persistent WebSocket connection.
    Clients connect with their API client credentials passed on the
    connection URL (`?client=key:secret`), then send JSON subscribe messages
    naming a topic. Documented topics include:

    - **Market symbols** (e.g. `EURUSD:CUR`, `AAPL:US`, `CL1:COM`) for live
      quote ticks (https://docs.tradingeconomics.com/markets/streaming/)
    - **calendar** for live economic calendar releases - actual values the
      moment indicators like interest rate decisions and CPI are published
      (https://docs.tradingeconomics.com/economic_calendar/streaming/)
    - **news** for live news items
      (https://docs.tradingeconomics.com/news/streaming/)
    - **earnings** for earnings releases
      (https://docs.tradingeconomics.com/financials/streaming/)

    Per the markets streaming documentation, subscribing to more than a
    single market topic requires a full key:secret credential pair; a plain
    key is limited to the single market topic EURUSD:CUR.

    The request/response REST surface (indicators, calendar, markets,
    forecasts, historical, financials) is modeled in the companion OpenAPI
    document at `openapi/tradingeconomics-openapi.yml`.
  contact:
    name: API Evangelist
    email: kin@apievangelist.com
    url: https://apievangelist.com
  license:
    name: API documentation - Trading Economics Terms of Service
    url: https://tradingeconomics.com/terms-of-service.aspx
  x-transport-notes:
    transport: WebSocket
    protocol: wss
    direction: bidirectional (client subscribes, server pushes)
    connectionURL: wss://stream.tradingeconomics.com/?client=key:secret
    subscribeMessage: '{"topic": "subscribe", "to": "<market symbol or channel>"}'
    channels: market symbols, calendar, news, earnings
    source: https://docs.tradingeconomics.com/markets/streaming/
defaultContentType: application/json
servers:
  production:
    url: stream.tradingeconomics.com
    protocol: wss
    description: |
      Trading Economics streaming server. Authorize by appending your API
      client credentials to the connection URL as the `client` query
      parameter (key:secret format), then send subscribe messages for each
      topic you want to receive.
    security:
      - clientCredentials: []
channels:
  /:
    description: |
      Single WebSocket channel. After connecting, the client publishes one or
      more subscribe messages naming a market symbol (e.g. EURUSD:CUR) or a
      named channel (calendar, news, earnings). The server then pushes JSON
      messages for each subscribed topic over the same connection.
    publish:
      operationId: subscribeToTopic
      summary: Subscribe to a market symbol or named channel.
      message:
        $ref: '#/components/messages/SubscribeMessage'
    subscribe:
      operationId: receiveStreamMessages
      summary: Receive pushed market ticks and release events.
      message:
        oneOf:
          - $ref: '#/components/messages/MarketTick'
          - $ref: '#/components/messages/CalendarRelease'
components:
  securitySchemes:
    clientCredentials:
      type: httpApiKey
      name: client
      in: query
      description: >-
        API client credentials in key:secret format passed as the `client`
        query parameter on the WebSocket connection URL.
  messages:
    SubscribeMessage:
      name: SubscribeMessage
      title: Subscribe message
      summary: Client-to-server JSON message subscribing to a topic.
      payload:
        type: object
        required:
          - topic
          - to
        properties:
          topic:
            type: string
            const: subscribe
          to:
            type: string
            description: >-
              Market symbol (e.g. EURUSD:CUR, AAPL:US, CL1:COM) or named
              channel (calendar, news, earnings).
            examples:
              - EURUSD:CUR
              - calendar
      examples:
        - name: subscribeCalendar
          payload:
            topic: subscribe
            to: calendar
        - name: subscribeEurUsd
          payload:
            topic: subscribe
            to: EURUSD:CUR
    MarketTick:
      name: MarketTick
      title: Market quote tick
      summary: Server-pushed live quote update for a subscribed market symbol.
      payload:
        type: object
        properties:
          s:
            type: string
            description: Symbol.
            example: EURUSD:CUR
          price:
            type: number
            description: Latest market price.
            example: 1.1057
          pch:
            type: number
            description: Percentage change on the day.
          nch:
            type: number
            description: Absolute net change on the day.
          dt:
            type: integer
            description: Timestamp in epoch milliseconds.
            example: 1681474172576
          state:
            type: string
            description: Market state.
            enum:
              - open
              - close
          dhigh:
            type: number
            description: Day high.
          dlow:
            type: number
            description: Day low.
          o:
            type: number
            description: Opening price.
          prev:
            type: number
            description: Previous closing price.
          type:
            type: string
            example: currency
          topic:
            type: string
            example: EURUSD
    CalendarRelease:
      name: CalendarRelease
      title: Economic calendar release
      summary: >-
        Server-pushed event emitted the moment an economic indicator release
        hits the calendar - for example a central bank interest rate decision
        or a CPI print.
      payload:
        type: object
        properties:
          event:
            type: string
            description: Name of the economic indicator event.
            example: Retail Sales MoM
          country:
            type: string
            description: Country issuing the data.
          actual:
            type: string
            description: Latest released value.
          previous:
            type: string
            description: Value for the prior period (after revision if any).
          revised:
            type: string
            description: Previously reported value after revision.
          forecast:
            type: string
            description: Average forecast among economists surveyed.
          teforecast:
            type: string
            description: Trading Economics proprietary forecast.
          date:
            type: string
            description: Release timestamp in UTC.
          referenceDate:
            type: string
            description: Period the released data covers.
          category:
            type: string
            description: Indicator classification.
            example: Interest Rate
          ticker:
            type: string
            description: Unique Trading Economics identifier.
          importance:
            type: integer
            description: 1=low, 2=medium, 3=high.
          unit:
            type: string
            example: '%'
          topic:
            type: string
            example: calendar