{
  "protocol": "symbaiex_ed25519_challenge_v1",
  "protocol_type": "custom",
  "oauth2": {
    "supported": false,
    "authorization_endpoint": null,
    "token_endpoint": null,
    "registration_endpoint": null
  },
  "protected_resource": "https://www.symbaiex.com/api/agent/mcp",
  "required_scope": "evidence",
  "signed_challenge_audience": "https://www.symbaiex.com/api/agent/mcp",
  "audience_binding": {
    "signed_challenge": true,
    "access_token_aud_claim": false,
    "enforcement": "Each protected request revalidates the active agent identity and evidence scope."
  },
  "endpoints": {
    "challenge": "https://www.symbaiex.com/api/agent/auth/challenge",
    "sign_in": "https://www.symbaiex.com/api/agent/auth/sign-in",
    "refresh": "https://www.symbaiex.com/api/agent/auth/refresh",
    "owner_enrollment": "https://www.symbaiex.com/agent/signup"
  },
  "key_algorithm": "Ed25519",
  "access_token_transport": "authorization_header_bearer",
  "private_key_handling": "client_local_only",
  "documentation": "https://www.symbaiex.com/agent/instructions"
}