openapi: 3.2.0
info:
  title: 0xArchive HIP-3 Builder Perps - Instruments API
  description: REST API for current and historical market data from Hyperliquid and Lighter. Hyperliquid coverage includes core perpetuals, Spot, HIP-3 builder perpetuals, and HIP-4 outcome markets. Coverage and access requirements vary by route. See https://docs.0xarchive.io/ for authentication, limits, and examples.
  version: 1.6.1
  termsOfService: https://0xarchive.io/terms
  contact:
    name: 0xArchive Support
    url: https://0xarchive.io
    email: support@0xarchive.io
  license:
    name: Proprietary
    url: https://0xarchive.io/terms
servers:
- url: https://api.0xarchive.io
  description: Production API
security:
- ApiKeyAuth: []
tags:
- name: HIP-3 Builder Perps - Instruments
  description: HIP-3 Builder Perps instrument discovery. Use this route with `/v1/symbols` `coverage_by_type` to resolve the current inventory and schema-specific dates.
paths:
  /v1/hyperliquid/hip3/instruments:
    get:
      tags:
      - HIP-3 Builder Perps - Instruments
      summary: List HIP-3 instruments
      description: List currently available HIP-3 builder-deployed perpetuals with latest market data (mark price, open interest, mid price). Use this route for discovery before selecting a symbol-specific data route.
      operationId: listHip3Instruments
      security:
      - ApiKeyAuth: []
      responses:
        '200':
          description: List of HIP-3 instruments
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponseHip3InstrumentArray'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
  /v1/hyperliquid/hip3/instruments/{symbol}:
    get:
      tags:
      - HIP-3 Builder Perps - Instruments
      summary: Get HIP-3 instrument
      description: Get a specific HIP-3 instrument by coin name with latest market data. Coin names are case-sensitive (e.g., km:US500, xyz:XYZ100).
      operationId: getHip3Instrument
      parameters:
      - name: symbol
        in: path
        required: true
        schema:
          type: string
        description: HIP-3 symbol name (e.g., km:US500, xyz:XYZ100). Case-sensitive.
        example: km:US500
      security:
      - ApiKeyAuth: []
      responses:
        '200':
          description: HIP-3 instrument details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponseHip3Instrument'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  schemas:
    ApiMeta:
      type: object
      description: Response metadata
      properties:
        count:
          type: integer
          description: Number of records returned
        next_cursor:
          type:
          - string
          - 'null'
          description: Cursor for pagination (timestamp). Use this value as the `cursor` parameter to fetch the next page of results.
        request_id:
          type: string
          format: uuid
          description: Unique request ID for support
        coverage_from:
          type: string
          format: date-time
          description: Earliest coverage for the requested symbol and data type. Present only when the requested window ends before coverage begins.
        notice:
          type: string
          description: Human-readable advisory about the response. Currently used when the requested window ends before coverage begins for the symbol; may carry other advisories in future.
    ApiResponseHip3Instrument:
      type: object
      description: API response wrapping a single HIP-3 instrument
      properties:
        success:
          type: boolean
          example: true
        data:
          $ref: '#/components/schemas/Hip3Instrument'
        meta:
          $ref: '#/components/schemas/ApiMeta'
    Hip3Instrument:
      type: object
      description: HIP-3 Builder Perps instrument with latest market data. Derived from live open interest data.
      required:
      - symbol
      - coin
      - namespace
      - ticker
      properties:
        symbol:
          type: string
          description: Trading pair symbol
          example: km:US500
        coin:
          type: string
          description: Full coin name (e.g., km:US500, xyz:XYZ100) (deprecated, use symbol instead)
          example: km:US500
          deprecated: true
        namespace:
          type: string
          description: Builder namespace (e.g., km, xyz)
          example: km
        ticker:
          type: string
          description: Ticker within the namespace (e.g., US500, XYZ100)
          example: US500
        mark_price:
          type:
          - number
          - 'null'
          description: Latest mark price
          example: 5432.1
        open_interest:
          type:
          - number
          - 'null'
          description: Latest open interest
          example: 1234567.89
        mid_price:
          type:
          - number
          - 'null'
          description: Latest mid price
          example: 5432.05
        latest_timestamp:
          type:
          - string
          - 'null'
          format: date-time
          description: Timestamp of latest data point
          example: '2026-02-18T12:00:00.000Z'
    Error:
      type: object
      description: Error response
      properties:
        code:
          type: integer
          description: HTTP status code
        error:
          type: string
          description: Error message
        error_code:
          type: string
          description: 'Machine-readable error code. Common values: `invalid_query_params` (a query parameter failed to parse or validate) and `invalid_path_params` (a path parameter failed to parse). Other endpoint-specific codes exist; treat unknown codes as generic errors of the given HTTP status.'
        request_id:
          type: string
          format: uuid
          description: Unique request ID for support
    ApiResponseHip3InstrumentArray:
      type: object
      description: API response wrapping an array of HIP-3 instruments
      properties:
        success:
          type: boolean
          example: true
        data:
          type: array
          items:
            $ref: '#/components/schemas/Hip3Instrument'
        meta:
          $ref: '#/components/schemas/ApiMeta'
  responses:
    Unauthorized:
      description: Authentication required
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            code: 401
            error: Missing or invalid API key. Provide X-API-Key header.
    BadRequest:
      description: Invalid request
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            code: 400
            error: 'Failed to deserialize query string: limit: invalid digit found in string'
            error_code: invalid_query_params
            request_id: 3f2a9c71-5b0e-4d68-9a4c-7e1d2b6f8a05
    RateLimited:
      description: Rate limit exceeded
      headers:
        X-RateLimit-Limit:
          schema:
            type: integer
          description: Requests per second limit
        X-RateLimit-Remaining:
          schema:
            type: integer
          description: Remaining requests this second
        X-RateLimit-Reset:
          schema:
            type: integer
          description: Unix timestamp when limit resets
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            code: 429
            error: Rate limit exceeded
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            code: 404
            error: Resource not found
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key for authentication. Get yours at https://0xarchive.io/dashboard
externalDocs:
  description: 0xArchive Developer Docs
  url: https://docs.0xarchive.io/
x-0xarchive-docs-language-overlay:
  name: data-quality-supported-venue-language
  reason: Public OpenAPI language must describe supported venue-family coverage instead of broad exchange coverage.
  updated_at: '2026-05-24'
  remove_when: Public source OpenAPI uses supported venue-family wording for data-quality coverage and latency descriptions.
x-0xarchive-docs-overlay:
  name: hyperliquid-spot
  reason: Hyperliquid Spot routes are included in the local REST contract.
  source: live endpoint behavior and public CLI/MCP/Skill surface truth
  updated_at: '2026-05-08'
  remove_when: Public source contract includes the same Spot route family.