Forum Markets API

openapi: 3.1.0
info:
  title: Forum Account Markets API
  version: '1.0'
  description: 'The Forum API provides programmatic access to the Forum perpetual futures exchange.

    Trade attention-based perpetual futures, access real-time market data, and manage your account.


    ## Base URL


    All endpoints are relative to `https://api.forum.market/v1`.


    ## Authentication


    Public endpoints (market data, exchange status) require no authentication.

    Private endpoints (orders, positions, account) require HMAC-SHA256 signed requests.


    See the [Authentication](/api-reference/authentication) guide for details.

    '
  contact:
    name: Forum Support
    email: contact@forum.market
    url: https://forum.market
  termsOfService: https://forum-legal.s3.us-east-2.amazonaws.com/terms-of-service.pdf
servers:
- url: https://api.forum.market/v1
  description: Production
security:
- ForumAccessKey: []
  ForumAccessTimestamp: []
  ForumAccessSign: []
tags:
- name: Markets
  description: Market listings and details
paths:
  /markets:
    get:
      operationId: listMarkets
      summary: List all markets
      description: Returns all available markets with their current ticker data. Pagination will be added as the number of markets grows.
      tags:
      - Markets
      security: []
      parameters:
      - name: category
        in: query
        schema:
          type: string
        description: Filter by market category
        example: tech
      responses:
        '200':
          description: List of markets
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Market'
        '429':
          $ref: '#/components/responses/RateLimited'
  /markets/{ticker}:
    get:
      operationId: getMarket
      summary: Get market
      description: Returns details for a specific market, including current prices and statistics.
      tags:
      - Markets
      security: []
      parameters:
      - $ref: '#/components/parameters/TickerPath'
      responses:
        '200':
          description: Market details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Market'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  schemas:
    ErrorResponse:
      type: object
      required:
      - error
      properties:
        error:
          type: object
          required:
          - code
          - message
          properties:
            code:
              type: string
              description: Machine-readable error code
              example: INVALID_PARAMETER
            message:
              type: string
              description: Human-readable error message
              example: Request validation failed
            details:
              type: object
              description: Additional error details
              example:
                fields:
                - field: ticker
                  message: Required
    Market:
      allOf:
      - $ref: '#/components/schemas/TickerInfo'
      - type: object
        required:
        - name
        - createdAt
        - category
        - expiryDate
        - picture
        - live
        - lastFunding
        - initialOpenTime
        - aboutDesc
        properties:
          name:
            type: string
            description: Market display name
            example: OpenAI
          createdAt:
            type: string
            format: date-time
            example: '2025-01-01T00:00:00.000Z'
          category:
            type: string
            description: Market category
            example: tech
          subCategory:
            type:
            - string
            - 'null'
            example: Artificial intelligence
          expiryDate:
            type: string
            format: date-time
            example: '2025-12-31T00:00:00.000Z'
          picture:
            type: string
            format: uri
            description: Market icon URL (not currently in use)
            example: https://example.com/openai.png
          live:
            type: boolean
            description: Whether the market is currently active for trading
            example: true
          lastFunding:
            type: string
            format: date-time
            description: Last funding settlement time
            example: '2026-02-25T08:00:00.000Z'
          initialOpenTime:
            type: string
            format: date-time
            description: When the market first opened for trading
            example: '2025-01-15T00:00:00.000Z'
          aboutDesc:
            type: string
            description: Description of the market
            example: A perpetual futures contract tracking OpenAI's attention index.
    TickerInfo:
      type: object
      required:
      - ticker
      - index
      - openInterest
      - volumePastDay
      - cumFunding
      - updatedAt
      properties:
        ticker:
          type: string
          example: OPENAI
        index:
          type: string
          description: Underlying attention index name
          example: OPENAI-IDX
        movingFundingRate:
          type:
          - number
          - 'null'
          description: Estimated next funding rate based on the average premium index in the current funding window
          example: 0.0001
        lastSettledFundingRate:
          type:
          - number
          - 'null'
          description: Last settled funding rate
          example: 0.0001
        lastPrice:
          type:
          - number
          - 'null'
          description: Last trade price in cents
          example: 10550
        markPrice:
          type:
          - number
          - 'null'
          description: Fair-value mark price in cents used for unrealized PnL and liquidation checks
          example: 10525
        bestBid:
          type:
          - number
          - 'null'
          description: Best bid price in cents
          example: 10500
        bestAsk:
          type:
          - number
          - 'null'
          description: Best ask price in cents
          example: 10600
        openInterest:
          type: number
          description: Total open interest in contracts
          example: 1234
        highPastDay:
          type:
          - number
          - 'null'
          description: 24-hour high price in cents
          example: 11000
        lowPastDay:
          type:
          - number
          - 'null'
          description: 24-hour low price in cents
          example: 10000
        volumePastDay:
          type: number
          description: 24-hour trading volume in cents
          example: 500000
        changePercentPastDay:
          type:
          - number
          - 'null'
          description: 24-hour price change percentage
          example: 2.5
        changePastDay:
          type:
          - number
          - 'null'
          description: 24-hour price change in cents
          example: 250
        cumFunding:
          type: number
          description: Running cumulative sum of all settled funding rates for a market. A position's accrued funding is `qty * (cumFunding - position.lastCumFunding)`.
          example: 0.0023
        fundingAvgPastWeek:
          type:
          - number
          - 'null'
          description: Average funding rate over the past week
          example: 0.0001
        fundingHighPastWeek:
          type:
          - number
          - 'null'
          description: Highest funding rate over the past week
          example: 0.0003
        fundingLowPastWeek:
          type:
          - number
          - 'null'
          description: Lowest funding rate over the past week
          example: -0.0001
        lastIndexValue:
          type:
          - number
          - 'null'
          description: Latest attention index value
          example: 100
        changeIndexPercentPastDay:
          type:
          - number
          - 'null'
          description: 24-hour index change percentage
          example: 0.06
        changeIndexPastDay:
          type:
          - number
          - 'null'
          description: 24-hour index change
          example: 1.5
        changeIndexPercentPastWeek:
          type:
          - number
          - 'null'
          description: Past week index change percentage
          example: 0.06
        changeIndexPastWeek:
          type:
          - number
          - 'null'
          description: Past week index change
          example: 3
        changeIndexPercentPastMonth:
          type:
          - number
          - 'null'
          description: Past month index change percentage
          example: 0.06
        changeIndexPastMonth:
          type:
          - number
          - 'null'
          description: Past month index change
          example: 10
        changeIndexPercentPastYear:
          type:
          - number
          - 'null'
          description: Past year index change percentage
          example: 0.06
        changeIndexPastYear:
          type:
          - number
          - 'null'
          description: Past year index change
          example: 10
        changeIndexPercentAllTime:
          type:
          - number
          - 'null'
          description: All time index change percentage
          example: 0.06
        changeIndexAllTime:
          type:
          - number
          - 'null'
          description: All time index change
          example: 50
        updatedAt:
          type: string
          format: date-time
          description: Last update timestamp (ISO 8601)
          example: '2025-02-25T00:00:00.000Z'
  responses:
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: NOT_FOUND
              message: Resource not found
    RateLimited:
      description: Rate limit exceeded
      headers:
        Retry-After:
          schema:
            type: integer
          description: Seconds to wait before retrying
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: RATE_LIMIT_EXCEEDED
              message: Rate limit exceeded. Try again in 5 seconds.
  parameters:
    TickerPath:
      name: ticker
      in: path
      required: true
      schema:
        type: string
      description: Market ticker symbol
      example: OPENAI
  securitySchemes:
    ForumAccessKey:
      type: apiKey
      in: header
      name: FORUM-ACCESS-KEY
      description: Your API key ID (e.g. `fk_a1b2c3d4e5f6...`)
    ForumAccessTimestamp:
      type: apiKey
      in: header
      name: FORUM-ACCESS-TIMESTAMP
      description: Unix epoch in seconds (UTC), as a string
    ForumAccessSign:
      type: apiKey
      in: header
      name: FORUM-ACCESS-SIGN
      description: 'Base64-encoded HMAC-SHA256 signature.


        **Signature generation:**

        ```

        prehash = timestamp + method + requestPath + body

        signature = Base64(HMAC-SHA256(secret, prehash))

        ```

        '