Forum Positions API

openapi: 3.1.0
info:
  title: Forum Account Positions 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: Positions
  description: Open position data
paths:
  /positions:
    get:
      operationId: listPositions
      summary: List all positions
      description: Returns all open positions for the authenticated user. Requires `read` permission.
      tags:
      - Positions
      security:
      - ForumAccessKey: []
        ForumAccessTimestamp: []
        ForumAccessSign: []
      responses:
        '200':
          description: Positions
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PositionsResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '429':
          $ref: '#/components/responses/RateLimited'
  /positions/{ticker}:
    get:
      operationId: getPosition
      summary: Get position by ticker
      description: Returns the position for a specific market. Requires `read` permission.
      tags:
      - Positions
      security:
      - ForumAccessKey: []
        ForumAccessTimestamp: []
        ForumAccessSign: []
      parameters:
      - $ref: '#/components/parameters/TickerPath'
      responses:
        '200':
          description: Position details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PositionRecord'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  responses:
    Forbidden:
      description: Insufficient permissions
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: INSUFFICIENT_PERMISSIONS
              message: API key lacks required permission
    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.
    Unauthorized:
      description: Missing or invalid authentication
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error:
              code: UNAUTHORIZED
              message: Missing or invalid authentication
  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
    PositionsResponse:
      type: object
      required:
      - data
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/PositionRecord'
    PositionRecord:
      type: object
      required:
      - id
      - createdAt
      - userId
      - ticker
      - qty
      - avgEntryPrice
      - realizedTradePnl
      - lastUpdated
      - realizedFundingPnl
      - realizedFundingPnlAtOpen
      - lastCumFunding
      properties:
        id:
          type: integer
          example: 1
        createdAt:
          type: string
          format: date-time
          description: Position creation time (time of initial entry)
          example: '2026-02-20T00:00:00.000Z'
        userId:
          type: integer
          example: 42
        ticker:
          type: string
          example: OPENAI
        qty:
          type: number
          description: Position size. Positive for long, negative for short.
          example: 5
        avgEntryPrice:
          type: number
          description: Average entry price in cents
          example: 10000
        realizedTradePnl:
          type: number
          description: Realized PnL from trades in cents
          example: 20000
        lastUpdated:
          type: string
          format: date-time
          example: '2026-02-25T12:00:00.000Z'
        realizedFundingPnl:
          type: number
          description: Net realized PnL from funding settlements in cents
          example: 5000
        realizedFundingPnlAtOpen:
          type: number
          description: Snapshot of `realizedFundingPnl` captured when the current position lifecycle began (flat --> open or long <--> short flip). Funding realized since the position was opened is `realizedFundingPnl - realizedFundingPnlAtOpen`.
          example: 3000
        lastCumFunding:
          type: number
          description: Snapshot of the market's `cumFunding` at the time the position's quantity last changed. See `cumFunding` in the `GET /markets/{ticker}` response for how accrued funding is computed.
          example: 0.0023
  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))

        ```

        '