LangChain

Use Chronary’s calendar tools in LangChain. createChronaryLangChainToolkit returns an array of StructuredTools you can bindTools to a chat model or pass to an agent executor.

Install

npm install @chronary/toolkit @chronary/sdk @langchain/core
# plus a model integration, e.g. @langchain/openai
npm install @langchain/openai

Quickstart

import { ChatOpenAI } from '@langchain/openai';
import { createChronaryLangChainToolkit } from '@chronary/toolkit/langchain';

const tools = createChronaryLangChainToolkit({
  apiKey: process.env.CHRONARY_API_KEY!,
});

const llm = new ChatOpenAI({ model: 'gpt-4o' }).bindTools(tools);

const res = await llm.invoke('When is my next calendar event?');
console.log(res.tool_calls);

For a full agent loop, drop the same tools into createReactAgent / AgentExecutor so LangChain runs the tool calls and returns a final answer.

Tip

The tools are standard StructuredTools with Zod schemas, so they work anywhere LangChain accepts tools — LangGraph nodes, agent executors, or a plain bindTools.

Next steps

• All frameworks
• MCP Tools Reference — the full 50-tool surface
• Multi-agent scheduling guide