openapi: 3.2.0
info:
  title: AAAA Nexus Reputation API
  version: 0.5.1
  description: Formally verified AI safety APIs for autonomous agents. Supports REST, MCP, A2A (Google protocol), and x402 micropayment protocol.
  contact:
    email: atomadic69@gmail.com
    url: https://github.com/atomadictech/aaaa-nexus
servers:
- url: https://atomadic.tech
  description: Production
security: []
tags:
- name: Reputation
  description: 'Reputation ledger: record interactions, score queries, history'
paths:
  /v1/reputation/record:
    post:
      operationId: recordReputation
      summary: Record agent interaction
      description: Record an agent interaction in the reputation ledger. Costs $0.02/call.
      tags:
      - Reputation
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - agent_id
              - interaction_type
              - outcome
              properties:
                agent_id:
                  type: string
                interaction_type:
                  type: string
                outcome:
                  type: string
                  enum:
                  - positive
                  - negative
                  - neutral
                counterparty_id:
                  type: string
      responses:
        '200':
          description: Interaction recorded
          content:
            application/json:
              schema:
                type: object
                properties:
                  record_id:
                    type: string
                  agent_id:
                    type: string
                  recorded_at:
                    type: string
                    format: date-time
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/reputation/score:
    get:
      operationId: getReputationScore
      summary: Get reputation score
      description: Get the reputation score for an agent. Costs $0.008/call.
      tags:
      - Reputation
      parameters:
      - name: agent_id
        in: query
        required: true
        schema:
          type: string
        description: Agent identifier
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      responses:
        '200':
          description: Reputation score
          content:
            application/json:
              schema:
                type: object
                properties:
                  agent_id:
                    type: string
                  score:
                    type: number
                    format: float
                  total_interactions:
                    type: integer
                  positive_ratio:
                    type: number
                    format: float
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/reputation/history:
    get:
      operationId: getReputationHistory
      summary: Reputation history
      description: Get the reputation history for an agent.
      tags:
      - Reputation
      parameters:
      - name: agent_id
        in: query
        required: true
        schema:
          type: string
        description: Agent identifier
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      responses:
        '200':
          description: Reputation history
          content:
            application/json:
              schema:
                type: object
                properties:
                  agent_id:
                    type: string
                  history:
                    type: array
                    items:
                      type: object
                      properties:
                        interaction_type:
                          type: string
                        outcome:
                          type: string
                        timestamp:
                          type: string
                          format: date-time
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
components:
  responses:
    PaymentRequired:
      description: 'Payment required. Use x402 protocol: send USDC on Base L2, Polygon, or Solana to the treasury address provided in the response, then retry with the X-Payment-Proof header.'
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
                example: Payment required
              amount:
                type: string
                example: '0.002'
              currency:
                type: string
                example: USDC
              treasury:
                type: string
                description: Destination wallet address
              chains:
                type: array
                items:
                  type: string
                example:
                - base
                - polygon
                - solana
    BadRequest:
      description: Invalid request body or missing required fields.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
                example: Unauthorized
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key obtained from https://atomadic.tech/pay
    X402PaymentProof:
      type: apiKey
      in: header
      name: X-Payment-Proof
      description: Base64-encoded USDC payment proof for x402 autonomous payment flow (Base L2, Polygon, or Solana)
    AdminTokenAuth:
      type: apiKey
      in: header
      name: X-Admin-Token
      description: Admin token for privileged operations