@langgraph-js/sdk/dist/server/feTools.js

The UI SDK for LangGraph - seamlessly integrate your AI agents with frontend interfaces

import { interrupt } from "@langchain/langgraph";
import { createDefaultAnnotation } from "./createState.js";
import { DynamicStructuredTool } from "@langchain/core/tools";
import { createState } from "./createState.js";
export const FEToolsState = createState().build({
    fe_tools: createDefaultAnnotation(() => []),
});
export const createFETool = (tool) => {
    return tool;
};
export const createFeTools = (tools) => {
    return tools
        .map((tool) => {
        try {
            return actionToTool(tool);
        }
        catch (e) {
            console.error(e);
            return null;
        }
    })
        .filter((tool) => tool !== null);
};
export const actionToTool = (tool) => {
    const callTool = async (args) => {
        const data = interrupt(JSON.stringify(args));
        return [data, null];
    };
    const schema = tool.parameters;
    return new DynamicStructuredTool({
        name: tool.name,
        description: tool.description || "",
        schema,
        func: callTool,
        responseFormat: "content_and_artifact",
    });
};