{
  "protocolVersion": "0.3.0",
  "kind": "agent-card",
  "name": "Peptides x402",
  "description": "Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for peptides.",
  "positioning": "A2A Peptides is a B2B agentic toolset for the parties authorized to handle those products.",
  "brief": "AI agents for authorized trading partners. Not marketing. Not advertising.",
  "notice": "Artificial intelligence makes mistakes. A2A Peptides is an information source, not a recommendation. Rules differ by jurisdiction — refer to the regulator in your jurisdiction for the information that applies to you.",
  "regulators": {
    "FDA (United States)": "https://www.fda.gov/",
    "Health Canada": "https://www.canada.ca/en/health-canada.html",
    "COFEPRIS (Mexico)": "https://www.gob.mx/cofepris",
    "EMA (European Union)": "https://www.ema.europa.eu/",
    "MHRA (UK)": "https://www.gov.uk/government/organisations/medicines-and-healthcare-products-regulatory-agency",
    "MFDS (Korea)": "https://www.mfds.go.kr/",
    "PMDA (Japan)": "https://www.pmda.go.jp/",
    "HSA (Singapore)": "https://www.hsa.gov.sg/",
    "Swissmedic (Switzerland)": "https://www.swissmedic.ch/"
  },
  "lede": "The payments door of the A2A Peptides family: settlement after the gate, and the per-resolve meter on the registry's truth tools. An order intent settles in USDC on Base; the receipt is signed and carries the reason code and the rule-set version the gate returned.",
  "url": "https://peptides-x402.ai/a2a",
  "version": "1.6.6",
  "surface_version": "1.1.0",
  "documentationUrl": "https://a2a-peptides.ai/docs",
  "iconUrl": "https://peptides-x402.ai/icon-512.png",
  "provider": {
    "organization": "GreenCore Solutions Corp.",
    "url": "https://gsc-em.com"
  },
  "operator": {
    "name": "GreenCore Solutions Corp.",
    "url": "https://a2a-peptides.ai",
    "contact": "mailto:mcp@a2a-peptides.ai",
    "keyring": "https://peptides-x402.ai/.well-known/jwks.json",
    "kid": "a2ap-2026-09"
  },
  "contact": "mailto:mcp@a2a-peptides.ai",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "securitySchemes": {
    "credential": {
      "type": "http",
      "scheme": "bearer",
      "description": "client-credentials Bearer from https://peptides-registry.ai; reads on this surface need no authentication"
    }
  },
  "security": [],
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "preferredTransport": "JSONRPC",
  "door_version": "1.6.6",
  "tools": 20,
  "additionalInterfaces": [
    {
      "url": "https://mcp.a2a-peptides.ai/mcp",
      "transport": "streamable-http",
      "protocolVersion": "2025-06-18",
      "description": "MCP door — server a2a-peptides 1.6.6, 20 tools"
    }
  ],
  "supportedInterfaces": [
    {
      "url": "https://peptides-x402.ai/a2a",
      "protocolBinding": "JSONRPC",
      "transport": "JSONRPC",
      "protocolVersion": "0.3.0",
      "preferred": true,
      "description": "A2A endpoint — receipt questions (peptides.receipt_lookup, peptides.settled_state); text gets the skill list"
    },
    {
      "url": "https://mcp.a2a-peptides.ai/mcp",
      "protocolBinding": "HTTP+JSON",
      "transport": "streamable-http",
      "protocolVersion": "2025-06-18",
      "description": "MCP door — server a2a-peptides 1.6.6, 20 tools"
    },
    {
      "url": "https://peptides-x402.ai/",
      "protocolBinding": "HTTP+JSON",
      "transport": "HTTP+JSON",
      "protocolVersion": "1.0",
      "description": "this surface and its kit"
    }
  ],
  "skills": [
    {
      "id": "peptides.api",
      "name": "api",
      "description": "The paid call (402 offer without payment; settled answer and signed receipt with PAYMENT-SIGNATURE; on an order intent the gate runs before settlement and a deny is not charged)",
      "tags": [
        "peptides"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "peptides.settled",
      "name": "settled",
      "description": "This zone's settled register with family_settled beside it",
      "tags": [
        "peptides"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "peptides.x402",
      "name": "x402",
      "description": "How the paid call works",
      "tags": [
        "peptides"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "text/html"
      ]
    },
    {
      "id": "peptides.receipt_lookup",
      "name": "receipt lookup",
      "description": "Resolve a settlement receipt by nonce (signed EdDSA, kid a2ap-x402-receipts-2026-09).",
      "tags": [
        "x402",
        "a2a"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "peptides.settled_state",
      "name": "settled state",
      "description": "The payments door's settled count and last receipt.",
      "tags": [
        "x402",
        "a2a"
      ],
      "inputModes": [
        "application/json",
        "text/plain"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "family": {
    "hub": "https://a2a-peptides.ai",
    "registry": "https://peptides-registry.ai",
    "x402": "https://peptides-x402.ai",
    "tenant": "https://peptides-usa.ai"
  },
  "asOf": "2026-09-19",
  "signatures": [
    {
      "protected": "eyJhbGciOiJFUzI1NiIsImtpZCI6ImEyYXAtMjAyNi0wOSJ9",
      "signature": "g-kZD92Dg2zAuTzTVxM0Yi8SlZnhg1ha-MHhs7MLHpS_PMyxHroUKpDr6BbFgmEkLkiWK9WM4RI8TowyaJR8CA"
    }
  ]
}