Function defineTool

nodejs/src/types.ts:570–582

(
    name: string,
    config: {
        description?: string;
        parameters?: ZodSchema<T> | Record<string, unknown>;
        handler?: ToolHandler<T>;
        overridesBuiltInTool?: boolean;
        skipPermission?: boolean;
        defer?: "auto" | "never";
    }
)

 * Without this helper, TypeScript cannot infer handler argument types from Zod schemas.
 */
export function defineTool<T = unknown>(
    name: string,
    config: {
        description?: string;
        parameters?: ZodSchema<T> | Record<string, unknown>;
        handler?: ToolHandler<T>;
        overridesBuiltInTool?: boolean;
        skipPermission?: boolean;
        defer?: "auto" | "never";
    }
): Tool<T> {
    return { name, ...config };
}

// ============================================================================
// Commands