Open-source review for agent-written code: open a whole repo as one review, ask the agent why, and publish verdicts to GitHub.
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What is Co-Review?
Read the whole repository with the agent that built it
Co-Review is a free, open-source code review tool for the age of agent-written code. Months of agent-written changes later, the code works but no longer feels like yours. Co-Review opens the whole repository as one review: read it like a pull request, ask the agent why anything is the way it is, and comment on lines, files, folders or the entire repo. Review diffs, pull requests and designs, then submit Approve, Request changes or Comment in one go — and publish GitHub PR reviews directly to GitHub.
- Whole-repository review with an agent-written map and findings
- Inline threads anchored to code, even as it changes
- Works with Claude Code, Gemini, OpenCode, Goose and any MCP client
- Design reviews with Markdown and Mermaid diagrams
- One-click verdicts published to GitHub
Co-Review is MIT-licensed, free, and collects no telemetry. Reviews live on your machine, and code only goes to the agent you choose.
Platforms and languages
Co-Review Availability
Platforms
Languages
Capabilities
Co-Review Key Features
Whole-repository review
Open an entire codebase as one review: the agent maps it, writes a guide to its vocabulary, flows and weak points, and lists findings.
Inline comment threads
Comment on lines, ranges, symbols, files, folders or the whole repo, with anchors that follow code as it changes.
Your agent as reviewer
Connects Claude Code, Gemini, OpenCode, Goose or any MCP client — ask the agent why anything is the way it is.
Design review
Review plans before code: Markdown and Mermaid designs as an L1·L2·L3 tree, with comments on each step.
One-click verdicts
Approve, request changes or comment in one submit, and publish GitHub PR reviews straight to GitHub.
Best for
Who uses Co-Review?
Developers using coding agents
Understand and review code their agents built, before it drifts past what they hold in their head
Plans and access
Co-Review Pricing
Free
Free and open source (MIT); no paid plans.
Common questions
Co-Review FAQs
Is Co-Review free?
Yes. Co-Review is free and MIT open source, with no paid plans and no account required.
Which coding agents does it work with?
Claude Code, Gemini, OpenCode, Goose, Pi, Oh My Pi and any MCP client, plus a Claude Code plugin.
Which platforms are supported?
Desktop apps for macOS (Apple Silicon), Linux (x64 and arm64) and Windows, plus a browser version. Intel Macs can build from source.
Is my code sent anywhere?
No telemetry is collected and no account is needed. Reviews are stored locally, and code is only sent to the AI agent you choose — and to GitHub when you publish a review.
Reviews
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