openapi: 3.2.0
info:
  title: anchor-x402 Grade 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: Grade
paths:
  /v1/grade:
    post:
      summary: Generate a letter grade and margin notes for text
      operationId: grade_v1_grade_post
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/GradeRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GradeResponse'
        '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: '0.010000'
        protocols:
        - x402: {}
      tags:
      - Grade
components:
  schemas:
    GradeResponse:
      properties:
        letter_grade:
          type: string
          enum:
          - A+
          - A
          - A-
          - B+
          - B
          - B-
          - C+
          - C
          - C-
          - D+
          - D
          - F
          title: Letter Grade
        marginalia:
          items:
            type: string
          type: array
          title: Marginalia
        summary:
          type: string
          title: Summary
      type: object
      required:
      - letter_grade
      - marginalia
      - summary
      title: GradeResponse
    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
    GradeRequest:
      properties:
        target:
          type: string
          maxLength: 6000
          minLength: 1
          title: Target
          description: Anything to grade.
      type: object
      required:
      - target
      title: GradeRequest
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError