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Open-source coding agent that runs as an IDE extension and CLI with bring-your-own-key model access.
Apache 2.0 coding agent available as a VS Code extension (also installable in Cursor and JetBrains, plus a CLI) with explicit Plan and Act modes. Edits multiple files with diff review, executes terminal commands, and extends via MCP servers. Users bring their own API keys for Claude, GPT, Gemini, Ollama, and OpenAI-compatible endpoints; the company also sells enterprise plans.
Strengths
- Open source (Apache 2.0) with full BYOK model flexibility
- Plan/Act split gives explicit human approval before execution
- MCP support and .clinerules for repo-specific configuration
- Runs in VS Code, JetBrains, Cursor, and as a CLI
Tradeoffs
- Token costs fall directly on the user and can run high with frontier models
- Per-step approval workflow is slower than fully autonomous harnesses