{
  "service": "agent-handshake.com",
  "status": "operational",
  "protocol": "FCS-4.0",
  "version": "1.0.0",
  "role": "challenge-response",
  "description": "Agent identity verification via Ed25519 challenge-response",
  "endpoints": {
    "challenge": "GET /api/v1/challenge",
    "verify": "POST /api/v1/verify",
    "status": "GET /api/v1/status",
    "token_validate": "POST /api/v1/token/validate",
    "token_issue": "POST /api/v1/token/issue",
    "jwks": "GET /.well-known/jwks.json"
  },
  "related": {
    "registry": "https://agent-registry.org",
    "trust": "https://agent-trust.org"
  },
  "signing_algorithm": "Ed25519",
  "token_format": "CALT v3 (base64url header.payload.signature)",
  "timestamp": "2026-05-30T17:21:41.437Z"
}