ExchangeRebel Cited-Answer Search API

openapi: 3.2.0
info:
  title: ExchangeRebel — pay-per-call APIs for AI agents (x402 on…
  version: 1.0.0
  contact:
    name: 'ExchangeRebel (operator: Rebel Data)'
    url: https://exchangerebel.com
    email: sound.money.investing@gmail.com
  x-guidance: 'All paid operations use x402 on Solana: call without payment to get a 402 challenge (SOL recipient + USDC token account + fresh memo), pay with the memo attached via the Solana Memo program, then retry with header X-Payment-Tx: <signature> and ?toll_memo=<memo>. Challenges are dual-version: the PAYMENT-REQUIRED header carries the x402 v2 PaymentRequired object and the response body carries the same challenge in x402 v1 form for compatibility. Free operations (security: []) include each service''s /health catalog with full response shapes. Prices in x-payment-info are USD per call unless the summary says otherwise (RPC is per 1,000-request block; Telegram provisioning is per bot-month; transcription is per minute of audio).'
  description: '67 data and utility APIs behind x402 tolls, settled in SOL or USDC on Solana. Call a paid endpoint without payment to receive a 402 x402 challenge (recipient + fresh memo), pay with the memo attached via the Solana Memo program, then retry with the X-Payment-Tx header and toll_memo query parameter. Free catalog/health endpoints are marked without x-payment-info. Full catalogs: GET /toll/discovery and each service''s /health.'
servers:
- url: https://exchangerebel.com
tags:
- name: Cited-Answer Search
paths:
  /toll/search:
    get:
      tags:
      - Cited-Answer Search
      summary: Cited-answer search catalog (free)
      responses:
        '200':
          description: Success. Response shape is documented in the service catalog (GET /health on the service).
      security: []
      operationId: getTollSearch
      x-operation-id-source: derived
  /toll/search/health:
    get:
      tags:
      - Cited-Answer Search
      summary: Cited-answer search health (free)
      responses:
        '200':
          description: Success. Response shape is documented in the service catalog (GET /health on the service).
      security: []
      operationId: getTollSearchHealth
      x-operation-id-source: derived
  /toll/search/cited/preflight:
    post:
      tags:
      - Cited-Answer Search
      summary: 'Free pre-check twin: exact $0.05 price first'
      responses:
        '200':
          description: Success. Response shape is documented in the service catalog (GET /health on the service).
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                query:
                  type: string
                  description: string (required) - the question, 3..512 chars; search_depth must be absent or "basic"
              required:
              - query
      security: []
      operationId: postTollSearchCitedPreflight
      x-operation-id-source: derived
  /toll/search/cited:
    post:
      tags:
      - Cited-Answer Search
      summary: 'Cited-answer web search: $0.05 flat per call'
      responses:
        '200':
          description: Success. Response shape is documented in the service catalog (GET /health on the service).
          content:
            application/json:
              example:
                answer: The rate rose in October [1], though a second source reports a different figure [2] — the sources disagree on the size of the move.
                citations:
                - index: 1
                  passage: The rate rose to 5 percent in October according to the monthly report.
                  title: Example Monthly Report
                  url: https://example.com/report
                - index: 2
                  passage: The rate fell to 4 percent in October, contradicting other reports.
                  title: Example Journal
                  url: https://example.com/journal
                price:
                  sol_lamports: 340000
                  usdc_units: 50000
                price_usd: 0.05
                sources_read: 2
        '402':
          description: 'Payment Required (x402). The PAYMENT-REQUIRED response header carries the x402 v2 PaymentRequired object (base64 JSON: scheme, CAIP-2 network, amount, asset, payTo, plus the bazaar discovery extension); the response body carries the same challenge in x402 v1 form for compatibility, naming the SOL recipient and USDC token account on Solana plus a fresh memo. To pay on this service''s rail: pay with the memo attached (Solana Memo program), then retry with header ''X-Payment-Tx: <transaction signature>'' and query parameter ''toll_memo=<memo>''.'
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                query:
                  type: string
                  description: string (required) - the question, 3..512 chars; search_depth must be absent or "basic"
              required:
              - query
      x-payment-info:
        protocols:
        - x402
        price:
          mode: fixed
          currency: USD
          amount: '0.05'
      security:
      - x402Payment: []
      operationId: postTollSearchCited
      x-operation-id-source: derived
components:
  securitySchemes:
    x402Payment:
      type: apiKey
      in: header
      name: X-Payment-Tx
      description: 'x402 toll payment proof: the Solana transaction signature of a payment carrying the memo from the 402 challenge; send together with ?toll_memo=<memo>. Payment itself is made on-chain in SOL or USDC to the recipient named in the challenge.'