Function tool

tool<RunInput, RunOutput, FuncInput>(func, fields): DynamicStructuredTool<RunInput, RunOutput>
Creates a new StructuredTool instance with the provided function, name, description, and schema.
Type Parameters
- RunInput extends ZodAny = ZodAny
  The input schema for the tool. This corresponds to the input type when the tool is invoked.
- RunOutput extends ToolMessage = ToolMessage
  The output type for the tool. This corresponds to the output type when the tool is invoked.
- FuncInput extends any = TypeOf<RunInput>
  The input type for the function.
Parameters
- func: RunnableFunc<FuncInput, ContentAndRawOutput>
  The function to invoke when the tool is called.
- fields: Omit<ToolWrapperParams<RunInput>, "responseFormat"> & {
  responseFormat: "contentAndRawOutput";
  }
  An object containing the following properties:
Returns DynamicStructuredTool<RunInput, RunOutput>
A new StructuredTool instance.

Function
- Defined in langchain-core/src/tools/index.ts:491
tool<RunInput, RunOutput, FuncInput>(func, fields): DynamicStructuredTool<RunInput, RunOutput>
Type Parameters
- RunInput extends ZodAny = ZodAny
- RunOutput extends string = string
- FuncInput extends any = TypeOf<RunInput>
Parameters
- func: RunnableFunc<FuncInput, string>
- fields: Omit<ToolWrapperParams<RunInput>, "responseFormat"> & {
  responseFormat?: "content";
  }
Returns DynamicStructuredTool<RunInput, RunOutput>
- Defined in langchain-core/src/tools/index.ts:502