@adaline/langchain

LangChain (TypeScript) integration for the Adaline SDK.

Wraps the Adaline Monitor lifecycle around LangChain's callback handler so chain / chat-model / tool / retriever events stream into Adaline's observability backend with zero code changes to the chain itself.

Install

npm install @adaline/client @adaline/langchain @langchain/core

@adaline/client and @langchain/core are peer dependencies — make sure they are in your project.

Quick start

import { Adaline } from "@adaline/client";
import { AdalineLangChainCallbackHandler } from "@adaline/langchain";
import { ChatOpenAI } from "@langchain/openai";

const adaline = new Adaline({ apiKey: process.env.ADALINE_API_KEY! });
const monitor = adaline.initMonitor({ projectId: process.env.ADALINE_PROJECT_ID! });

const handler = new AdalineLangChainCallbackHandler({ monitor });

const llm = new ChatOpenAI({ model: "gpt-4o-mini" });
const result = await llm.invoke("Hello", { callbacks: [handler] });

await monitor.flush();

Setting a global handler

import { setGlobalHandler } from "@adaline/langchain";

setGlobalHandler(new AdalineLangChainCallbackHandler({ monitor }));

clearGlobalHandler() removes it.

License

MIT