Crit — Review AI coding agents' plans, code diffs, and running apps in your browser with inline comments.

Analyzed by · AI · Developer Tools · View on GitHub

What It Is

Crit is like a collaborative document editor, but specifically designed for the outputs of your AI coding agents. Instead of just getting raw text back from an AI, Crit provides a dedicated user interface to review plans, code changes (diffs), or even live web applications generated by an agent, allowing you to leave precise, inline comments.

This matters because it makes working with AI agents much more efficient and less frustrating. You can give concrete, actionable feedback directly on the relevant part of the output, speeding up iteration cycles and helping agents understand exactly what needs to be changed or improved, reducing misunderstandings.

Crit GitHub repository card

License Verdict

MIT License — Build and Sell Freely — Commercial Use Approved • No Copyleft Restrictions

The MIT License is highly permissive. You can use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the software. This means you can freely build commercial products and services on top of Crit without needing to open-source your own code.

How to Use It

Install the Crit binary using a package manager like Brew or Go. Then, integrate it with your preferred AI agent (like Claude Code) and tell the agent to use the `crit` command for reviewing its work.

Prerequisites:

Estimated setup time: 5 minutes.

brew install crit
claude plugin marketplace add tomasz-tomczyk/crit
claude plugin install crit@crit
/crit

What I'd Build With This

AI-Generated UI/UX Review Service (micro-saas)

Offer a hosted service where users can upload static HTML/CSS/JS files generated by AI, or point to a live URL, and receive a shareable Crit review link. This allows designers and frontend developers to easily gather feedback on AI-generated UI mockups or components. Users would pay a monthly subscription based on the number of reviews or team members.

Effort: 2 Weeks Build Time · Target: Frontend Developers, UI/UX Designers, Agencies · Pricing: $29/month

Collaborative AI Agent Feedback Platform (saas)

Build a SaaS platform that integrates Crit's review capabilities deeply into an AI-powered development workflow for teams. This platform would offer enhanced collaboration features, review analytics, automated feedback loops for various AI agents, and integration with popular version control systems like GitHub and GitLab. Teams would pay per user or per project.

Effort: 3 Months Build Time · Target: Dev Teams, AI Engineering Teams, Startups · Pricing: $99/month/team

Secure Enterprise AI Code Audit Workbench (enterprise)

Provide a self-hosted, secure deployment of Crit for large enterprises, especially those in regulated industries. This solution would integrate with their internal AI agent systems, proprietary code repositories, and compliance tools, allowing for secure, audited review of AI-generated code and plans within their existing infrastructure. Pricing would be based on an annual enterprise license.

Effort: 6 Months Build Time · Target: Large Enterprises, Financial Services, Healthcare · Pricing: $30,000/year

Sai Pavan Gopularam's Take

Crit is a game-changer for anyone seriously building with AI agents. It gives you a structured, visual way to give feedback, which is absolutely crucial for iterating quickly and guiding agents effectively. I could see charging $49/month for a hosted version that adds team collaboration and deeper integrations with specific agent platforms.

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