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LangChain · Type Alias

ToolCall

ToolCall describes an AI request to call a tool. It includes the tool name, input arguments, and an optional request ID.

Last updated

Since
v1.7

Syntax

ToolCall: TypedDict with type Literal["tool_call"], id str | None, name str, args dict[str, Any], and optional index and extras.

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • ToolMessage
  • AIMessage
  • ContentBlock
  • ToolCallChunk

Source: ToolCall | langchain_core | LangChain Reference. Checked 2026-11-03.