Open SWE
Open-source coding agent framework from LangChain that takes tasks from codebase investigation to reviewed pull requests.
Overview
Open SWE is LangChain’s open-source software factory for engineering teams, described by LangChain as a framework for internal coding agents. Built on LangGraph, it investigates a codebase, implements a change, validates it and opens a pull request, then reviews PRs, watches CI and responds to reviewer feedback.
Teams trigger it from GitHub, Slack or Linear, and each task runs in its own cloud sandbox.
The code is MIT licensed and free. Team deployments run on LangChain’s paid LangSmith Deployment, and production standalone Agent Server deployments need a LangSmith license key.
Features
- Investigates a codebase, implements a change and validates it.
- Opens a pull request and responds to reviewer feedback.
- Reviews pull requests and watches CI.
- Can be triggered from GitHub, Slack or Linear.
- Runs each task in its own cloud sandbox.
- Built on LangGraph.
Details
- Company
- LangChain
- Headquarters
- San Francisco, CA
- Category
- Engineering factories
- Source
- Open source
- Repository
- License
- MIT
- Commercial offering
- Yes, paid offering available
- Topics
- Listed
- October 2026
- Last verified
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