Machinist
Machinist is an open-source software factory for coding agents. It runs agent jobs on your laptop, a virtual machine or a Kubernetes cluster, connects to GitHub so you can review the changes they make, and automates routine repository upkeep such as dependency bumps and fixes, with evals to check the results.
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About Machinist
Machinist is listed in our coding category and is aimed at builders. Machinist is an open-source software factory for coding agents. It runs agent jobs on your laptop, a virtual machine or a Kubernetes cluster, connects to GitHub so you can review the changes they make, and automates routine repository upkeep such as dependency bumps and fixes, with evals to check the results. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-24.
Machinist at a glance
- Category: Coding
- Built for: Developers and teams building with AI agents
- Pricing: Open source (as the maker states it)
- GitHub: owainlewis/machinist · 519 stars (as of Oct 24, 2026)
- Official site: machinist.sh
- Listed on AgentScout: Oct 24, 2026
Machinist FAQ
What is Machinist?
Machinist is an open-source software factory for coding agents. It runs agent jobs on your laptop, a virtual machine or a Kubernetes cluster, connects to GitHub so you can review the changes they make, and automates routine repository upkeep such as dependency bumps and fixes, with evals to check the results.
How much does Machinist cost?
Machinist's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Where can I find Machinist's source code?
On GitHub at owainlewis/machinist, which had 519 stars as of Oct 24, 2026.
What are alternatives to Machinist?
Similar tools include OpenAI Codex CLI, OpenHands, Goose, Orbi, PR Lens and mu.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
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Machinist alternatives
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OpenAI Codex CLI
OpenAI's open-source coding agent for the terminal; also runs in the cloud.
OpenHands
Open-source platform for autonomous coding agents.
Goose
Extensible open-source AI agent that installs, runs, edits and tests code on your machine with any LLM and MCP extensions.
Orbi
Orbi is an open-source (AGPL-3.0) software factory for GitHub repositories. When you label a GitHub Issue ai-ready, Orbi implements it in an isolated worktree, opens and reviews pull requests in a separate AI review session that checks acceptance criteria and repairs failing tests, merges the exact reviewed commit SHA, and cuts a tagged GitHub Release when a human applies the ai-release label.
PR Lens
PR Lens helps people review code that agents wrote. For each pull request it draws animated architecture and data-flow diagrams inside the PR, showing which parts of the app were added, changed or removed, what else depends on the change and how a request now moves through the system. It also flags likely bugs, security holes and design problems in the same review comment, with a ready prompt to hand each fix to your coding agent or an autofix. The open-source core runs locally and installs as an agent skill.
mu
mu is an open-source coding agent with a judgment kernel: a small, fast judge model makes the many routine decisions in each turn so the main model only gets the context it needs. It ships as a command-line tool and a desktop app and aims to keep coding sessions focused and cheap.
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