概述

import {
  createAgent,
  summarizationMiddleware,
  humanInTheLoopMiddleware,
} from "langchain";

const agent = createAgent({
  model: "gpt-5.5",
  tools: [...],
  middleware: [summarizationMiddleware, humanInTheLoopMiddleware],
});

import { AgentState, createAgent, humanInTheLoopMiddleware } from "langchain";
import { StateGraph, START } from "@langchain/langgraph";

// 假设 readEmail、sendEmail、classifyNode 和 route 在其他地方已定义。
// readEmail / sendEmail 注册时使用 name: "read_email" / "send_email"。
const emailAgent = createAgent({
  model: "claude-sonnet-4-6",
  tools: [readEmail, sendEmail],
  middleware: [humanInTheLoopMiddleware({ interruptOn: { send_email: true } })],
});

const graph = new StateGraph(AgentState)
  .addNode("classify", classifyNode)
  .addNode("emailAgent", emailAgent)
  .addEdge(START, "classify")
  .addConditionalEdges("classify", route)
  .compile();