openapi: 3.1.0
info:
  title: Polygon Crypto REST Aggregates Markets API
  version: '1.0'
  description: 'Polygon Crypto API exposes aggregated cross-exchange data for crypto

    pairs (e.g., X:BTCUSD) via `https://api.polygon.io`. This spec

    covers aggregates, daily open/close, snapshots, and level-2 books.

    Auth uses an API key via `apiKey` query parameter or

    `Authorization: Bearer`.

    '
  contact:
    name: Polygon Documentation
    url: https://polygon.io/docs/crypto
servers:
- url: https://api.polygon.io
  description: Polygon REST API
security:
- apiKeyQuery: []
- bearerAuth: []
tags:
- name: Markets
  description: Markets, exchanges, holidays, and status.
paths:
  /v3/reference/markets:
    get:
      tags:
      - Markets
      operationId: listMarkets
      summary: List Markets
      responses:
        '200':
          description: Markets response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MarketsResponse'
  /v3/reference/exchanges:
    get:
      tags:
      - Markets
      operationId: listExchanges
      summary: List Exchanges
      parameters:
      - in: query
        name: asset_class
        schema:
          type: string
      - in: query
        name: locale
        schema:
          type: string
      responses:
        '200':
          description: Exchanges response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ExchangesResponse'
  /v1/marketstatus/upcoming:
    get:
      tags:
      - Markets
      operationId: listUpcomingMarketHolidays
      summary: List Upcoming Market Holidays
      description: List upcoming US market holidays and the corresponding session schedule.
      responses:
        '200':
          description: Upcoming market holidays response
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/MarketHoliday'
  /v1/marketstatus/now:
    get:
      tags:
      - Markets
      operationId: getCurrentMarketStatus
      summary: Get Current Market Status
      description: Get the current trading status for US markets.
      responses:
        '200':
          description: Market status response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MarketStatusResponse'
components:
  schemas:
    Exchange:
      type: object
      properties:
        id:
          type: integer
        type:
          type: string
        asset_class:
          type: string
        locale:
          type: string
        name:
          type: string
        acronym:
          type: string
        mic:
          type: string
        operating_mic:
          type: string
        participant_id:
          type: string
        url:
          type: string
          format: uri
    ExchangesResponse:
      type: object
      properties:
        status:
          type: string
        request_id:
          type: string
        count:
          type: integer
        results:
          type: array
          items:
            $ref: '#/components/schemas/Exchange'
    Market:
      type: object
      properties:
        market:
          type: string
        desc:
          type: string
    MarketHoliday:
      type: object
      properties:
        exchange:
          type: string
        name:
          type: string
        date:
          type: string
          format: date
        status:
          type: string
        open:
          type: string
        close:
          type: string
    MarketsResponse:
      type: object
      properties:
        status:
          type: string
        results:
          type: array
          items:
            $ref: '#/components/schemas/Market'
    MarketStatusResponse:
      type: object
      properties:
        market:
          type: string
        serverTime:
          type: string
          format: date-time
        exchanges:
          type: object
          additionalProperties:
            type: string
        currencies:
          type: object
          additionalProperties:
            type: string
        earlyHours:
          type: boolean
        afterHours:
          type: boolean
  securitySchemes:
    apiKeyQuery:
      type: apiKey
      in: query
      name: apiKey
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key