openapi: 3.2.0
info:
  title: x402 Anchor API
  description: 18 pay-per-call x402 services for AI agents — on-chain anchoring & attestation, wallet/address security screening, Web3 data (tx & calldata decode, ENS, token prices), x402 spend accounting, content analysis, and verifiable randomness. No API keys or accounts; settle per request in USDC on Base or Solana. $0.001–$1.77 per call.
  version: 0.3.0
  x-guidance: Pay-per-call x402 services for AI agents — no API keys or accounts. Each paid route returns HTTP 402 with x402 payment requirements; pay in USDC on Base or Solana (select routes also settle JPYC on Polygon) and retry with the payment header. Prices are $0.001–$1.77 per call. POST routes take a JSON body per each operation's requestBody schema.
  contact:
    email: hypeprinter007@gmail.com
  x-logo:
    url: https://api.anchor-x402.com/icon.png
    altText: anchor-x402
tags:
- name: Anchor
paths:
  /v1/anchor:
    post:
      summary: Create a dual-chain proof anchoring a 32-byte hash
      operationId: anchor_v1_anchor_post
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AnchorRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AnchorResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '402':
          description: Payment Required
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.005000'
        protocols:
        - x402: {}
      tags:
      - Anchor
components:
  schemas:
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
      - loc
      - msg
      - type
      title: ValidationError
    AnchorResponse:
      properties:
        merkle_root:
          type: string
          title: Merkle Root
          description: The 64-char hex hash that was anchored.
        base:
          $ref: '#/components/schemas/ChainAnchor'
        solana:
          anyOf:
          - $ref: '#/components/schemas/ChainAnchor'
          - type: 'null'
          description: None if the Solana side failed; Base anchor still proves the hash existed.
        anchored_at:
          type: integer
          title: Anchored At
          description: Unix epoch seconds when the anchor txs were broadcast.
        note:
          anyOf:
          - type: string
          - type: 'null'
          title: Note
      type: object
      required:
      - merkle_root
      - base
      - anchored_at
      title: AnchorResponse
    ChainAnchor:
      properties:
        tx:
          type: string
          title: Tx
        explorer_url:
          type: string
          title: Explorer Url
      type: object
      required:
      - tx
      - explorer_url
      title: ChainAnchor
    AnchorRequest:
      properties:
        hash:
          anyOf:
          - type: string
          - type: 'null'
          title: Hash
          description: Pre-computed 32-byte hex hash (64 chars, no 0x prefix). Mutually exclusive with `data`.
        data:
          anyOf:
          - {}
          - type: 'null'
          title: Data
          description: Arbitrary JSON to be canonicalized + SHA-256'd by the server. Mutually exclusive with `hash`.
        note:
          anyOf:
          - type: string
            maxLength: 200
          - type: 'null'
          title: Note
          description: Optional 200-char note included in the response (not on-chain).
      type: object
      title: AnchorRequest
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError