Crit

Crit is a local review tool for the output of AI coding agents. Instead of scrolling through terminal diffs after an agent has touched a dozen files, you open the changes in a browser, click a specific line, type what is wrong, and hand the comments back to the agent. When the agent edits the work, Crit reloads with a round to round diff so you can confirm each comment was addressed. It is built for developers who work with coding agents every day and want a PR style review surface without waiting on a hosted service. Five review modes cover different outputs: plans and markdown documents, code diffs on a branch or PR with support for git, jj and Sapling and stacked PRs, story mode that groups a diff into thematic chapters so the important changes surface first, live review of a running dev server with comments pinned to DOM elements, and previews of static HTML files. Other features include syntax highlighting for 146 languages, inline Mermaid diagrams, suggestion comments that show the exact replacement, Vim keybindings, per branch review state kept outside the repository, and one click public links for sharing a review. Comments are bundled into a structured review file, so any agent that can read a file can act on them. Crit is open source under the MIT license and ships as a single binary with no account, configuration or dependencies required. It installs through Homebrew, Go, Nix or a Windows executable, and self hosting is documented. No paid plan is published on the site.