An autonomous coding loop: it plans tasks from your roadmap, writes code in isolated VMs on your own Claude, Codex, GLM, or Kimi key, and ships tested PRs.
Keelen was founded in 2026 by Jamie Keelen. It grew out of one observation: coding models had become good enough to write a change, but not good enough to be trusted with merging it. The hard part was never generation. It was verification. So Keelen was built around gates rather than prompts. It works from a standing roadmap, picks its own next task, implements it in an isolated single-use VM, and puts every change through five checks before merge. Keelen's own repository runs on the loop, so a weakness shows up in Keelen's own pull requests before it reaches anyone else.
Our stack
The coding work is done by the model you connect: Anthropic Claude via Claude Code, OpenAI Codex, Zhipu GLM 5.2, or Moonshot Kimi K3. Every iteration runs in an isolated single-use, non-root VM that is destroyed when the run ends, with deny-by-default network egress through a proxy. Repository access uses the official GitHub App with per-run tokens scoped to one repository. Keelen works on TypeScript and JavaScript, Python, Go, Rust, C and C++, Godot, and Roblox, with monorepo support via per-package test targets. A hosted MCP server lets the loop be driven from any MCP client.
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