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OpenAPI Specification

openapi: 3.2.0
info:
  title: Buildix Crypto Orderflow Funding Arb API
  description: 'Real-time crypto orderflow analytics API. Price, volume, funding and open interest for 170+ listed Hyperliquid perpetual futures pairs; VPIN, CVD, OBI, whale tracking and signal scores on the 100 most liquid of them. Static file: the figures mirror lib/seo/coverage.ts, update both together.'
  version: 1.0.0
  contact:
    name: Buildix
    url: https://www.buildix.trade
    email: hello@buildix.trade
  x-logo:
    url: https://www.buildix.trade/icon-512.png
servers:
- url: https://www.buildix.trade/api/v1
  description: Production
tags:
- name: Funding Arb
paths:
  /funding-arb:
    get:
      summary: Get cross-exchange funding arbitrage opportunities
      description: Returns Hyperliquid funding rates compared with Binance and Bybit (Hyperliquid predicted fundings), with arbitrage spread calculations.
      operationId: getFundingArb
      parameters:
      - name: X-API-Key
        in: header
        required: false
        schema:
          type: string
      responses:
        '200':
          description: Funding rate comparison data
          content:
            application/json:
              schema:
                type: object
                properties:
                  pairs:
                    type: array
                    items:
                      $ref: '#/components/schemas/FundingArb'
      tags:
      - Funding Arb
components:
  schemas:
    FundingArb:
      type: object
      properties:
        symbol:
          type: string
        hl:
          type: number
          description: Hyperliquid funding rate
        binance:
          type: number
          nullable: true
        bybit:
          type: number
          nullable: true
        okx:
          type: number
          nullable: true
        dydx:
          type: number
          nullable: true
        maxSpread:
          type: number
          description: Max funding rate spread across exchanges
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key