ModelReasoningBlock

Parameters and properties

• textOptional
  string | undefined
  Readable reasoning exposed by the service: the Anthropic thinking text or the Responses summary. The harness emits it as a reasoning event; replay uses data.
• typeRequired
  "reasoning"
  Block discriminator: reasoning.
• providerRequired
  string
  Identity of the provider that produced the block; other providers never receive it.
• modelRequired
  string
  Model that produced the block; it is replayed only to the same model.
• dataRequired
  unknown
  Opaque service payload: an Anthropic thinking or redacted_thinking block with its signature, or an OpenAI Responses reasoning item. Replay it unchanged.

Signature

export interface ModelReasoningBlock {
  readonly text?: string;
  readonly type: "reasoning";
  readonly provider: string;
  readonly model: string;
  readonly data: unknown;
}