openapi: 3.2.0
info:
  title: AAAA Nexus Veri Rand 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: VeriRand
  description: Premium verifiable random bytes and batch/stream RNG
paths:
  /v1/rng/seeded:
    post:
      operationId: seededRng
      summary: Seeded deterministic RNG
      description: Generate deterministic random values from a provided seed. Paid endpoint.
      tags:
      - VeriRand
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - seed
              properties:
                seed:
                  type: string
                  example: my-deterministic-seed
                count:
                  type: integer
                  example: 10
      responses:
        '200':
          description: Deterministic random values
          content:
            application/json:
              schema:
                type: object
                properties:
                  values:
                    type: array
                    items:
                      type: string
                  seed:
                    type: string
                  count:
                    type: integer
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/rng/batch:
    post:
      operationId: batchRng
      summary: Batch random generation
      description: Generate a batch of random values in a single request. Paid endpoint.
      tags:
      - VeriRand
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - count
              properties:
                count:
                  type: integer
                  example: 100
                bits:
                  type: integer
                  example: 256
      responses:
        '200':
          description: Batch random values
          content:
            application/json:
              schema:
                type: object
                properties:
                  values:
                    type: array
                    items:
                      type: string
                  count:
                    type: integer
                  bits:
                    type: integer
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/rng/stream:
    post:
      operationId: streamRng
      summary: Streaming random values
      description: Stream random values via Server-Sent Events. Paid endpoint.
      tags:
      - VeriRand
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                count:
                  type: integer
                  example: 1000
                bits:
                  type: integer
                  example: 256
                interval_ms:
                  type: integer
                  example: 100
      responses:
        '200':
          description: SSE stream of random values
          content:
            text/event-stream:
              schema:
                type: string
                description: Server-Sent Events stream of random values
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/verirand/bytes:
    post:
      operationId: verirandBytes
      summary: Premium verifiable random bytes
      description: Generate premium verifiable random bytes with cryptographic proof. Paid endpoint.
      tags:
      - VeriRand
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - length
              properties:
                length:
                  type: integer
                  example: 32
                  description: Number of bytes to generate
      responses:
        '200':
          description: Verifiable random bytes with proof
          content:
            application/json:
              schema:
                type: object
                properties:
                  bytes:
                    type: string
                    description: Hex-encoded random bytes
                  length:
                    type: integer
                  proof:
                    type: string
                  verified:
                    type: boolean
        '400':
          $ref: '#/components/responses/BadRequest'
        '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