LangGraph.js API Reference
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    Type Alias InferAgentToolCalls<T>

    InferAgentToolCalls: ExtractAgentConfig<T>["Tools"] extends readonly (
        infer Tool
    )[]
        ? ToolCallFromAgentTool<Tool> extends never
            ? DefaultToolCall
            : ToolCallFromAgentTool<Tool>
        : DefaultToolCall

    Extract tool calls type from an agent's tools. Converts the tools array to a discriminated union of tool calls.

    This handles both tuple types (e.g., readonly [Tool1, Tool2]) and array-of-union types (e.g., readonly (Tool1 | Tool2)[]) which is how createAgent captures tool types.

    Type Parameters

    • T
    const agent = createAgent({ tools: [getWeather, search], ... });
    type ToolCalls = InferAgentToolCalls<typeof agent>;
    // ToolCalls is:
    // | { name: "get_weather"; args: { location: string }; id?: string }
    // | { name: "search"; args: { query: string }; id?: string }