Create applications powered by large language models by connecting different components and tools together.
From the README
- Node.js (ESM and CommonJS) - 20.x, 22.x, 24.x
- Cloudflare Workers
- Vercel / Next.js (Browser, Serverless and Edge functions)
- Supabase Edge Functions
Excerpts from the project README on GitHub. Copyright and licensing remain with the respective authors.
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langchainjs has 18.1k stars on GitHub. It has been forked 3.3k times. langchainjs is written mainly in TypeScript. It has been in active development since 2023. langchainjs is available under the MIT license.
What is langchainjs?
The agent engineering platform
Is langchainjs open source?
langchainjs is an open-source project. It is released under the MIT license.
Is langchainjs free?
Yes. langchainjs is free and open source — you can use, modify and self-host it.
What license does langchainjs use?
langchainjs is available under the MIT license.
What language is langchainjs written in?
langchainjs is written mainly in TypeScript.
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