EODHD WebSockets Real-Time API

# generated: 2026-07-22 | method: derived
# source: https://eodhd.com/financial-apis/new-real-time-data-api-websockets +
#         provider-published WebSocket reference (github.com/EodHistoricalData/eodhd-claude-skills,
#         skills/eodhd-api/references/endpoints/websockets-realtime.md) + https://eodhd.com/llms.txt
# EODHD publishes no AsyncAPI document; this file is derived strictly from the
# provider's documented channels, subscribe protocol, and message schemas.
asyncapi: 3.0.0
info:
  title: EODHD WebSockets Real-Time API
  version: '1.0'
  description: >-
    Real-time streaming of US equity trades and quotes, forex, and cryptocurrency
    prices over WebSockets with sub-50ms latency. Authenticates with the same
    api_token used by the REST API (validated during handshake); streaming consumes
    zero API calls; up to 50 tickers per connection (upgradeable). Demo token `demo`
    streams AAPL/MSFT/TSLA (us), EURUSD (forex), and ETH-USD/BTC-USD (crypto).
  externalDocs:
    url: https://eodhd.com/financial-apis/new-real-time-data-api-websockets
defaultContentType: application/json
servers:
  production:
    host: ws.eodhistoricaldata.com
    protocol: wss
    description: 'Production WebSocket host. Connect with ?api_token=YOUR_API_KEY.'
channels:
  usTrades:
    address: /ws/us
    description: US equity trades — last price, size, condition codes, dark-pool flag; pre/post-market 4 AM-8 PM EST.
    messages:
      subscribe:
        $ref: '#/components/messages/subscribeCommand'
      trade:
        $ref: '#/components/messages/usTrade'
  usQuotes:
    address: /ws/us-quote
    description: US equity bid/ask quotes with sizes.
    messages:
      subscribe:
        $ref: '#/components/messages/subscribeCommand'
      quote:
        $ref: '#/components/messages/usQuote'
  forex:
    address: /ws/forex
    description: Forex bid/ask prices for 1,100+ currency pairs.
    messages:
      subscribe:
        $ref: '#/components/messages/subscribeCommand'
      tick:
        $ref: '#/components/messages/forexTick'
  crypto:
    address: /ws/crypto
    description: Cryptocurrency trades for 1,000+ digital currencies.
    messages:
      subscribe:
        $ref: '#/components/messages/subscribeCommand'
      tick:
        $ref: '#/components/messages/cryptoTick'
operations:
  subscribeSymbols:
    action: send
    channel:
      $ref: '#/channels/usTrades'
    summary: Subscribe or unsubscribe to symbols after connecting (same JSON command shape on every channel).
    messages:
      - $ref: '#/channels/usTrades/messages/subscribe'
  receiveUsTrades:
    action: receive
    channel:
      $ref: '#/channels/usTrades'
  receiveUsQuotes:
    action: receive
    channel:
      $ref: '#/channels/usQuotes'
  receiveForex:
    action: receive
    channel:
      $ref: '#/channels/forex'
  receiveCrypto:
    action: receive
    channel:
      $ref: '#/channels/crypto'
components:
  messages:
    subscribeCommand:
      name: subscribeCommand
      title: Subscribe / unsubscribe command
      payload:
        type: object
        properties:
          action:
            type: string
            enum: [subscribe, unsubscribe]
          symbols:
            type: string
            description: Comma-separated symbols, e.g. "AAPL, MSFT".
        required: [action, symbols]
    usTrade:
      name: usTrade
      title: US trade message
      payload:
        type: object
        properties:
          s: {type: string, description: Ticker symbol}
          p: {type: number, description: Last trade price}
          v: {type: integer, description: Trade size in shares}
          c: {type: integer, description: Trade condition code (see EODHD glossary)}
          dp: {type: boolean, description: Dark pool indicator}
          ms: {type: string, description: 'Market status: open | closed | extended hours'}
          t: {type: integer, description: Timestamp, epoch milliseconds}
    usQuote:
      name: usQuote
      title: US quote message
      payload:
        type: object
        properties:
          s: {type: string, description: Ticker symbol}
          ap: {type: number, description: Ask price}
          as: {type: integer, description: Ask size in shares}
          bp: {type: number, description: Bid price}
          bs: {type: integer, description: Bid size in shares}
          t: {type: integer, description: Timestamp, epoch milliseconds}
    forexTick:
      name: forexTick
      title: Forex tick message
      payload:
        type: object
        properties:
          s: {type: string, description: Currency pair, e.g. EURUSD}
          a: {type: number, description: Ask price}
          b: {type: number, description: Bid price}
          dc: {type: number, description: Daily change, percent}
          dd: {type: number, description: Daily difference, price units}
          ppms: {type: boolean, description: Pre/post market status (always false for forex)}
          t: {type: integer, description: Timestamp, epoch milliseconds}
    cryptoTick:
      name: cryptoTick
      title: Crypto tick message
      payload:
        type: object
        properties:
          s: {type: string, description: Crypto pair, e.g. ETH-USD}
          p: {type: number, description: Last price}
          q: {type: number, description: Trade quantity}
          dc: {type: number, description: Daily change, percent}
          dd: {type: number, description: Daily difference, price units}
          t: {type: integer, description: Timestamp, epoch milliseconds}