{
  "id": "sign-response-pending",
  "title": "Platform delegated signing pending response",
  "description": "A Platform returns an opaque continuation context and bounded retry cadence.",
  "drafts": ["draft-kavian-aep-platform-hosted-identity-01"],
  "category": "platform",
  "applicability": {
    "agent": {
      "expectation": "required",
      "profile": "platform-hosted-identity"
    },
    "platform": {
      "expectation": "required",
      "profile": "platform-hosted-identity"
    },
    "service": {
      "expectation": "unsupported"
    }
  },
  "input": {"idempotency_key_header": "01J0AEPSIGNINITIAL0000000001"},
  "expected": {
    "status": "pending",
    "platform_context": {"authorization_handle": "opaque-value"},
    "retry_after_seconds": "5"
  }
}