Variable: MessageGenerationMetaSchema

const MessageGenerationMetaSchema: TObject<{ durationMs: TInteger; generationId: TString; model: TString; providerConfigId: TUnion<[TString, TNull]>; providerKind: TUnion<[TString, TNull]>; providerSource: TUnion<[TString, TNull]>; usage: TUnion<[TObject<{ completionTokens: TInteger; promptTokens: TInteger; totalTokens: TInteger; }>, TNull]>; }>

Defined in: packages/contracts/src/message.ts:125

Terminal generation bookkeeping persisted on the assistant message under meta.generation. providerConfigId/providerKind are null when the built-in echo fallback produced the reply (no configured provider); providerSource mirrors the audit's resolution of settings.source (string or null); usage is null when the provider reported none.