generated: '2026-07-19'
method: derived
source: grpc/harmonic-gg-searcher-searcher.proto, grpc/harmonic-gg-validator-block_engine.proto, https://docs.harmonic.gg
standards:
- id: grpc
  conforms: true
  evidence: All services (auth.AuthService, searcher.SearcherService, BlockEngineValidator, Relayer) are gRPC over proto3.
- id: protobuf3
  conforms: true
  evidence: All published .proto definitions declare syntax = "proto3".
- id: jito-searcher-proto-compat
  conforms: true
  evidence: Docs state the SearcherService.SendBundle gRPC and auth flow are backwards-compatible with Jito's searcher protos (differing only in the Searcher role value).
- id: solana-block-building
  conforms: true
  evidence: Implements Solana validator block-building/streaming, Remote TPU aggregation, and searcher bundle submission.
- id: oauth2
  conforms: false
  evidence: No OAuth2; authentication is Solana-keypair challenge-response to Bearer tokens.
- id: oidc
  conforms: false
- id: rfc9457-problem-details
  conforms: false
  evidence: gRPC status codes are used, not HTTP application/problem+json.
- id: rest-openapi
  conforms: false
  evidence: No REST/OpenAPI surface; the API is gRPC-only.