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Coding Agents
Tier 4
Open SWE
Summary
LangChain's open-source asynchronous coding agent built on LangGraph: plans, executes, and opens PRs for software tasks end to end - an open implementation of the cloud SWE-agent product shape.
Key Takeaways
- Async 'issue in, PR out' is the emerging product shape for coding agents
- Built on graph orchestration with human checkpoints
Reliability Note
Official repository of an actively maintained project.
Flows informed by this source
2Agent Architecture
Design the Agent-Computer Interface (ACI)
Apply SWE-agent's key finding: agents perform dramatically better when their commands, viewers, and feedback are designed for models, not humans.
01Audit your current tool surface
02Build the windowed file viewer
03Add validated edits with corrective feedback
+2 more steps to Done
Best forproduction-grade builds with strict verification
5 steps90-120 minutesAdvanced
Agent QA & Security
Release Gates for Agent-Generated Code
Put agent output through a real merge gate: automated review, tests, security scans, and human sign-off proportional to risk.
01Assemble the automated gate
02Classify change risk
03Label provenance and require sign-off
+1 more steps to Done
Best forbuilders who have shipped a basic app before
4 steps60-90 minutesIntermediate