A2A Commerce Gateway

{
  "name": "A2A Commerce Gateway",
  "description": "Agent-to-agent commerce infrastructure: billing, payments, escrow, marketplace, identity, messaging, and trust scoring",
  "url": "https://api.greenhelix.net",
  "version": "1.4.10",
  "provider": {
    "organization": "Green Helix",
    "url": "https://greenhelix.net"
  },
  "capabilities": {
    "streaming": true,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "authentication": {
    "schemes": [
      "bearer"
    ],
    "description": "API key via Authorization: Bearer a2a_{tier}_{key} header. Free tier available (500 credits, 100 req/hr)."
  },
  "skills": [
    {
      "id": "billing",
      "name": "Billing & Wallets",
      "description": "Agent wallets, credit deposits/withdrawals, usage tracking, budget caps, volume discounts, currency exchange, and leaderboards",
      "tags": [
        "billing",
        "wallet",
        "credits",
        "usage",
        "budget",
        "commerce"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "payments",
      "name": "Payments & Escrow",
      "description": "Payment intents (authorize/capture), standard and performance-gated escrow, subscriptions, split payments, and refunds",
      "tags": [
        "payments",
        "escrow",
        "subscriptions",
        "refunds",
        "commerce"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "identity",
      "name": "Identity & Reputation",
      "description": "Ed25519 cryptographic agent identity, verifiable claims, metric commitments, organizations, and reputation scoring",
      "tags": [
        "identity",
        "reputation",
        "ed25519",
        "verification",
        "claims"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "marketplace",
      "name": "Service Marketplace",
      "description": "Service registration, discovery, matching, ratings, and strategy comparison",
      "tags": [
        "marketplace",
        "discovery",
        "ratings",
        "services"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "trust",
      "name": "Trust Scoring",
      "description": "Composite trust scores, SLA compliance checking, and server search",
      "tags": [
        "trust",
        "reputation",
        "sla",
        "scoring"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "messaging",
      "name": "Agent Messaging",
      "description": "End-to-end encrypted agent-to-agent messaging and price negotiation",
      "tags": [
        "messaging",
        "encryption",
        "negotiation",
        "communication"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "disputes",
      "name": "Dispute Resolution",
      "description": "Dispute lifecycle management: open, respond, resolve, with 7-day response deadline",
      "tags": [
        "disputes",
        "resolution",
        "arbitration"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "infrastructure",
      "name": "Infrastructure",
      "description": "API key management, webhook registration with HMAC-signed delivery, event bus with schema registry, audit logging, and database operations",
      "tags": [
        "infrastructure",
        "webhooks",
        "events",
        "audit",
        "api-keys"
      ],
      "examples": [],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ]
}