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Public story · 2026-03-21 · source-backed

LangChain Open-SWE: Async Coding Agent With Slack and Linear Integration — 7,819 Stars

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LangChain released Open-SWE, an open-source asynchronous coding agent built on LangGraph that analyzes codebases, plans implementation, writes code, runs tests, and opens PRs autonomously. The killer integration: mention @openswe in any Slack thread or comment @openswe on any Linear issue and it starts working. This is the architecture Cognition and Devin built privately, now fully open-source and forkable for self-hosted deployment with cloud sandboxes and subagent orchestration.

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