Interface ToolUseBlockData

Data for a tool use block.

interface ToolUseBlockData {
    name: string;
    toolUseId: string;
    input: JSONValue;
    reasoningSignature?: string;
}

Properties

name: string

The name of the tool to execute.

toolUseId: string

Unique identifier for this tool use instance.

The input parameters for the tool. This can be any JSON-serializable value.

reasoningSignature?: string

Reasoning signature from thinking models (e.g., Gemini). Must be preserved and sent back to the model for multi-turn tool use.