openapi: 3.2.0
info:
  title: AAAA Nexus Swarm 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: Swarm
  description: 'Swarm messaging: relay, broadcast, join, leave, topology, peers'
paths:
  /v1/swarm/relay:
    post:
      operationId: swarmRelay
      summary: Relay message through swarm
      description: Relay a message through the swarm network to reach a target agent.
      tags:
      - Swarm
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - target_agent_id
              - message
              properties:
                target_agent_id:
                  type: string
                message:
                  type: object
                ttl:
                  type: integer
                  description: Hop limit for relay
      responses:
        '200':
          description: Message relayed
          content:
            application/json:
              schema:
                type: object
                properties:
                  relay_id:
                    type: string
                  hops:
                    type: integer
                  delivered:
                    type: boolean
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/swarm/broadcast:
    post:
      operationId: swarmBroadcast
      summary: Broadcast to all swarm members
      description: Broadcast a message to all members of the swarm group.
      tags:
      - Swarm
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - message
              properties:
                message:
                  type: object
                group_id:
                  type: string
      responses:
        '200':
          description: Broadcast sent
          content:
            application/json:
              schema:
                type: object
                properties:
                  broadcast_id:
                    type: string
                  recipients:
                    type: integer
                  timestamp:
                    type: string
                    format: date-time
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/swarm/join:
    post:
      operationId: swarmJoin
      summary: Join swarm group
      description: Join a swarm group to receive broadcasts and participate in swarm activities.
      tags:
      - Swarm
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - agent_id
              properties:
                agent_id:
                  type: string
                group_id:
                  type: string
      responses:
        '200':
          description: Joined swarm group
          content:
            application/json:
              schema:
                type: object
                properties:
                  agent_id:
                    type: string
                  group_id:
                    type: string
                  joined_at:
                    type: string
                    format: date-time
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/swarm/leave:
    post:
      operationId: swarmLeave
      summary: Leave swarm group
      description: Leave a swarm group.
      tags:
      - Swarm
      security:
      - ApiKeyAuth: []
      - X402PaymentProof: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - agent_id
              properties:
                agent_id:
                  type: string
                group_id:
                  type: string
      responses:
        '200':
          description: Left swarm group
          content:
            application/json:
              schema:
                type: object
                properties:
                  agent_id:
                    type: string
                  group_id:
                    type: string
                  left_at:
                    type: string
                    format: date-time
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          $ref: '#/components/responses/PaymentRequired'
  /v1/swarm/topology:
    get:
      operationId: getSwarmScopedTopology
      summary: Swarm-scoped topology
      description: Returns swarm-scoped topology. Same data as /v1/agents/topology but scoped to the swarm group.
      tags:
      - Swarm
      responses:
        '200':
          description: Swarm topology
          content:
            application/json:
              schema:
                type: object
                properties:
                  agents:
                    type: integer
                  edges:
                    type: integer
                  average_degree:
                    type: number
                    format: float
                  components:
                    type: integer
  /v1/swarm/peers:
    get:
      operationId: getSwarmPeers
      summary: List swarm peers
      description: List all peers in the swarm group.
      tags:
      - Swarm
      responses:
        '200':
          description: Swarm peers
          content:
            application/json:
              schema:
                type: object
                properties:
                  peers:
                    type: array
                    items:
                      type: object
                      properties:
                        agent_id:
                          type: string
                        status:
                          type: string
                        joined_at:
                          type: string
                          format: date-time
                  total:
                    type: integer
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