{
 "number": 36175,
 "input_hash": "e1e5c0500cb812d1",
 "model": "openrouter/google/gemini-3.8-flash",
 "batch": false,
 "created": "2026-09-17T15:58:20+00:00",
 "provider": "Google",
 "stop_reason": "end_turn",
 "usage": {
  "input_tokens": 15316,
  "cache_creation_input_tokens": 0,
  "cache_read_input_tokens": 0,
  "output_tokens": 1974
 },
 "cost_usd": 0.0188895,
 "error": null,
 "result": {
  "display": {
   "goal": [
    "Add discriminator metadata to OpenRPC for getblock verbosity branches",
    "Help client libraries and code generators map getblock return schemas to verbosity values automatically"
   ],
   "reviewability": [
    "Ready to review"
   ],
   "agreement": [
    "Concept ACK and constructive review addressed (jeanpablojp)",
    "Minor question on static_cast pending author reply (maflcko)"
   ],
   "categories": [
    {
     "name": "rpc",
     "why": [
      "P3 because it provides structured OpenRPC metadata for multi-schema return types",
      "Removes the need for downstream RPC client generators to hardcode getblock verbosity branches"
     ]
    }
   ]
  },
  "summary": "This pull request introduces an `RPCResultDiscriminator` struct to annotate RPC methods with `oneOf` result schemas in OpenRPC. It applies this annotation to `getblock` under the custom `x-bitcoin-discriminated-result` property, mapping verbosity levels 0 through 3 to their respective result arms. It also documents schema extensions in `getopenrpcinfo` and explains in `getblock` help why verbosity 2 and 3 responses cannot be distinguished by JSON schema validation alone.",
  "problem": "OpenRPC documents `getblock` as a four-way `oneOf` based on the `verbosity` parameter, but does not specify which parameter value selects which schema branch, forcing client libraries to hardcode the mapping.",
  "discussion": {
   "open_concerns": [
    "maflcko asked about the necessity of a static_cast<int> on parameter index in server.cpp"
   ],
   "resolved_concerns": [
    "jeanpablojp suggested pinning parameter-name and schema-content invariants in rpc_openrpc.py instead of just literal values, which the author implemented",
    "Documented x-bitcoin-discriminated-result and x-bitcoin-default-hint in OpenRPCDocResult schema documentation"
   ],
   "author_status": "Active; addressed initial feedback and force-pushed updates"
  },
  "reviewability": {
   "state": "Ready",
   "label": "Ready",
   "reason": "The patch is small, cleanly rebased, and CI passes. Only one minor inline question is outstanding."
  },
  "agreement": {
   "state": "Positive",
   "summary": "Concept ACK from jeanpablojp with resolved suggestions; minor comment from maflcko",
   "reason": "Reviewer jeanpablojp Concept ACKed the PR and suggested test and documentation improvements that were incorporated. Reviewer maflcko left a minor inline question.",
   "evidence": [
    "jeanpablojp gave a Concept ACK and suggested strengthening test assertions and schema documentation",
    "nervana21 implemented jeanpablojp's suggestions and updated tests",
    "maflcko asked about a static_cast in server.cpp"
   ]
  },
  "dependencies": {
   "depends_on": [],
   "enables": []
  },
  "categories": [
   {
    "name": "rpc",
    "member": true,
    "evidence": "Touches src/rpc/blockchain.cpp, src/rpc/server.cpp, src/rpc/util.h, and OpenRPC functional tests.",
    "band": "P3",
    "reason_tag": "new feature",
    "score": 0.3,
    "factors": {
     "security_stability": 0,
     "bug_severity": 0,
     "performance": 0,
     "user_value": 1,
     "leverage": 1
    },
    "rationale": "P3 because it adds structured metadata to OpenRPC output for downstream client generators. As the author notes, clients like corepc and btcd previously had to hardcode the verbosity-to-schema mapping for getblock. The change does not alter runtime RPC handling or consensus/node behavior, but provides clean tooling value."
   }
  ],
  "confidence": "high",
  "uncertainties": [],
  "needs": [],
  "card": "This PR adds `RPCResultDiscriminator` metadata to the OpenRPC schema generator and stamps `getblock` with `x-bitcoin-discriminated-result` to explicitly map verbosity parameters 0-3 to their respective result schemas. This allows RPC code generators and typed client libraries to automatically map return types to `getblock` calls without hardcoding. It has a Concept ACK from jeanpablojp, who reviewed and suggested test improvements that were addressed, with an open minor inquiry from maflcko. Review is ready and the patch is small and self-contained."
 },
 "raw_text": null
}