ExchangeRebel Stream Divergence 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: Stream Divergence
paths:
  /toll/stream-divergence:
    get:
      tags:
      - Stream Divergence
      summary: Stream Divergence service catalog
      responses:
        '200':
          description: 'Success. Returns the service catalog: what a divergence report includes, the price ($0.05 per report), the published criteria (stream-divergence/v1), the pinned test corpus, and the scope statement (the report does not establish which output is correct, nor why they diverged).'
      security: []
      operationId: getTollStreamDivergence
      x-operation-id-source: derived
  /toll/stream-divergence/health:
    get:
      tags:
      - Stream Divergence
      summary: Stream Divergence service health
      responses:
        '200':
          description: Success. Returns service liveness and the report signer address.
      security: []
      operationId: getTollStreamDivergenceHealth
      x-operation-id-source: derived
  /toll/stream-divergence/criteria:
    get:
      tags:
      - Stream Divergence
      summary: The published stream-divergence criteria
      responses:
        '200':
          description: 'Success. Returns the full published criteria (stream-divergence/v1): the artefact caps, the comparison rules (byte equality, first-divergence offset, differing spans), and the pinned public test corpus identity; every report is reproducible from them.'
      security: []
      operationId: getTollStreamDivergenceCriteria
      x-operation-id-source: derived
  /toll/stream-divergence/corpus:
    get:
      tags:
      - Stream Divergence
      summary: The pinned public test corpus identity
      responses:
        '200':
          description: 'Success. Returns the public test corpus identity for stream-divergence checks: criteria stream-divergence/v1 and its SHA-256 pin ad710604a7356969d4efc9c94f17910550f92f55794f8b245aecab17f614de09 (the SHA-256 of the corpus''s canonical serialization). The corpus is buyer-runnable before paying.'
      security: []
      operationId: getTollStreamDivergenceCorpus
      x-operation-id-source: derived
  /toll/stream-divergence/precheck:
    post:
      tags:
      - Stream Divergence
      summary: 'Free pre-check: input validation and assessability only (no comparison, no…'
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                caller:
                  type: string
                  description: Solana base58 wallet of the operator; keys the free allowance (100/day per wallet).
                streamed_capture:
                  type: object
                  description: 'One artefact: {chunks: [base64 chunk, ...]} - chunk boundaries preserved as submitted; up to 1,024 chunks and 65,536 decoded bytes.'
                reference_output:
                  type: object
                  description: 'One artefact: {chunks: [base64 chunk, ...]} - chunk boundaries preserved as submitted; up to 1,024 chunks and 65,536 decoded bytes.'
              required:
              - caller
              - streamed_capture
              - reference_output
      responses:
        '200':
          description: 'Success. Returns assessability only: whether both artefacts are well-formed and comparable. No comparison is run and no divergence fact is returned. A malformed submission is refused free with named reasons. When the caller''s free allowance is exhausted, the response is the /toll/stream-divergence payment challenge instead.'
      security: []
      operationId: postTollStreamDivergencePrecheck
      x-operation-id-source: derived
  /toll/stream-divergence/compare:
    post:
      tags:
      - Stream Divergence
      summary: Compare a streamed capture against a reference output ($0.05)
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                streamed_capture:
                  type: object
                  description: 'One artefact: {chunks: [base64 chunk, ...]} - chunk boundaries preserved as submitted; up to 1,024 chunks and 65,536 decoded bytes.'
                reference_output:
                  type: object
                  description: 'One artefact: {chunks: [base64 chunk, ...]} - chunk boundaries preserved as submitted; up to 1,024 chunks and 65,536 decoded bytes.'
              required:
              - streamed_capture
              - reference_output
      responses:
        '200':
          description: 'Success. Returns the signed divergence report: byte-equal or not; both chunk counts and byte lengths; the first-divergence offset or NONE; and every differing span by position and length. The report does not establish which output is correct, nor why they diverged.'
        '402':
          description: 'Payment Required (x402). A per-item fee: $0.05 per report - each submitted artefact pair is charged at $0.05; the payment includes exactly one comparison of the two artefacts you submitted (the streamed capture and the reference output, each up to 1,024 chunks and 65,536 decoded bytes, inside a request body of up to 262,144 bytes) and one signed divergence report under stream-divergence/v1 stating: byte-equal or not; the chunk count and byte length of each artefact; the first-divergence offset, or NONE when the artefacts are byte-equal; and every differing span named by position and length. The report carries the mandatory scope text: the report does not establish which output is correct, nor why they diverged. A free pre-check validates the submission''s shape before any payment and returns assessability only — no comparison is run free. Artefacts are processed in memory only and are never stored; the payments ledger records only the payer, the time, the price, the byte-equal fact, and the verdict line. The response body carries the payment instructions in x402 v1 form: payTo (the operator''s Solana wallet), the amount (50000 USDC units = $0.05 per report) and a fresh memo. Pay in USDC on Solana with the memo attached via the Solana Memo program, then resubmit the same request with the payment transaction in the X-Payment-Tx header and ?toll_memo=<memo>, re-sending the request body. The PAYMENT-REQUIRED response header carries the same object in x402 v2 form.'
      x-payment-info:
        protocols:
        - x402
        price:
          mode: fixed
          currency: USD
          amount: '0.05'
      security:
      - x402Payment: []
      operationId: postTollStreamDivergenceCompare
      x-operation-id-source: derived
  /toll/stream-divergence/metrics:
    get:
      tags:
      - Stream Divergence
      summary: Stream Divergence aggregate counters
      responses:
        '200':
          description: Success. Returns aggregate counters (paid reports, distinct payers, free pre-checks today). Aggregate only - no payer identities, no submitted content.
      security: []
      operationId: getTollStreamDivergenceMetrics
      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.'