Nord Pool Intraday Trading API (WebSocket/STOMP)

asyncapi: 2.6.0
info:
  title: Nord Pool Intraday Trading API (WebSocket/STOMP)
  version: '1.0'
  description: >-
    Nord Pool's Intraday Trading API is a genuine WebSocket API. Clients open
    secure WebSocket connections (port 443) and speak STOMP over them to two
    web services - a Market Data service (public market data streams such as
    contracts, order books / local views, capacities, delivery areas, and
    tickers) and a Trading service (order entry, modification, and private
    execution/trade reports) - for continuous intraday power trading on the
    Nord Pool platform. Authentication uses a token issued by Nord Pool's SSO
    for API credentials provisioned by Nord Pool (idapi@nordpoolgroup.com);
    access requires being a Nord Pool trading customer. Nord Pool also ships a
    newer Intraday Binary PMD v2 market-data feed over WebSockets using
    Protocol Buffers. This AsyncAPI document is MODELED - the WebSocket+STOMP
    transport, dual Market Data / Trading connections, heartbeats, and token
    refresh are confirmed from Nord Pool's public GitHub examples
    (NordPool/public-intraday-api and NordPool/public-intraday-api-example)
    and the developer portal, but exact host names are environment-specific
    and provided during onboarding, and channel names below are
    representative rather than verbatim. Consult
    https://developers.nordpoolgroup.com/ for the authoritative topic list.
  contact:
    name: Nord Pool Intraday API Support
    email: idapi@nordpoolgroup.com
    url: https://developers.nordpoolgroup.com/
  x-transport-notes: >-
    Transport is WebSocket (wss, port 443) carrying STOMP frames - this is a
    true bidirectional WebSocket API, unlike HTTP streaming or SSE. Clients
    maintain STOMP heartbeats and refresh SSO access tokens over the live
    connection. Hosts are per-environment (test and production) and are
    issued to onboarded trading customers, so placeholder hosts are used
    below.
externalDocs:
  description: Nord Pool Developer Portal - Intraday introduction
  url: https://developers.nordpoolgroup.com/v1.0/docs/id-introduction
defaultContentType: application/json
servers:
  marketData:
    url: wss://{marketDataHost}
    protocol: stomp
    description: >-
      Intraday Market Data web service. Streams public market data topics
      (contracts, local views / order books, capacities, delivery areas,
      configuration, ticker). Host provided at onboarding; placeholder used
      here (modeled).
    variables:
      marketDataHost:
        description: Environment-specific Market Data service host issued by Nord Pool.
        default: intraday-marketdata.example.nordpoolgroup.com
    security:
      - ssoToken: []
  trading:
    url: wss://{tradingHost}
    protocol: stomp
    description: >-
      Intraday Trading web service. Accepts order entry and modification
      requests and streams private execution reports and trades. Host
      provided at onboarding; placeholder used here (modeled).
    variables:
      tradingHost:
        description: Environment-specific Trading service host issued by Nord Pool.
        default: intraday-trading.example.nordpoolgroup.com
    security:
      - ssoToken: []
channels:
  streaming/contracts:
    description: Tradable intraday contracts and their state (representative topic; modeled).
    subscribe:
      operationId: receiveContracts
      summary: Receive contract definitions and updates
      message:
        $ref: '#/components/messages/contract'
  streaming/localview:
    description: >-
      Order book / local market view for the member's delivery areas
      (representative topic; modeled).
    subscribe:
      operationId: receiveLocalView
      summary: Receive order book updates
      message:
        $ref: '#/components/messages/orderBookUpdate'
  streaming/capacities:
    description: Cross-border transmission capacities between areas (representative topic; modeled).
    subscribe:
      operationId: receiveCapacities
      summary: Receive area-to-area capacity updates
      message:
        $ref: '#/components/messages/capacity'
  streaming/ticker:
    description: Public trade ticker for the intraday market (representative topic; modeled).
    subscribe:
      operationId: receiveTicker
      summary: Receive public trade ticker events
      message:
        $ref: '#/components/messages/tickerTrade'
  orderEntry:
    description: >-
      Order entry destination on the Trading service - submit, modify, and
      cancel intraday orders (representative destination; modeled).
    publish:
      operationId: sendOrder
      summary: Send an order entry request
      message:
        $ref: '#/components/messages/orderEntryRequest'
  orderExecutionReport:
    description: >-
      Private execution reports for the member's own orders (representative
      destination; modeled).
    subscribe:
      operationId: receiveExecutionReport
      summary: Receive private order execution reports
      message:
        $ref: '#/components/messages/executionReport'
  privateTrade:
    description: Private trade confirmations for the member (representative destination; modeled).
    subscribe:
      operationId: receivePrivateTrade
      summary: Receive private trade confirmations
      message:
        $ref: '#/components/messages/privateTrade'
components:
  securitySchemes:
    ssoToken:
      type: userPassword
      description: >-
        API credentials issued by Nord Pool (idapi@nordpoolgroup.com) are
        exchanged with the Nord Pool SSO for an access token, which is
        presented when opening the STOMP connection and refreshed while the
        WebSocket session is live.
  messages:
    contract:
      name: contract
      title: Intraday contract
      summary: A tradable intraday contract definition or state change.
      payload:
        type: object
        additionalProperties: true
    orderBookUpdate:
      name: orderBookUpdate
      title: Order book update
      summary: Aggregated order book / local view rows for subscribed areas.
      payload:
        type: object
        additionalProperties: true
    capacity:
      name: capacity
      title: Transmission capacity
      summary: Available transmission capacity between two delivery areas.
      payload:
        type: object
        additionalProperties: true
    tickerTrade:
      name: tickerTrade
      title: Ticker trade
      summary: Public information about an executed intraday trade.
      payload:
        type: object
        additionalProperties: true
    orderEntryRequest:
      name: orderEntryRequest
      title: Order entry request
      summary: Order submission, modification, or cancellation sent by the member.
      payload:
        type: object
        additionalProperties: true
    executionReport:
      name: executionReport
      title: Execution report
      summary: Private report on the lifecycle of the member's order.
      payload:
        type: object
        additionalProperties: true
    privateTrade:
      name: privateTrade
      title: Private trade
      summary: Private confirmation of the member's executed trade.
      payload:
        type: object
        additionalProperties: true