CodeGPT (appleboy) is a command-line tool written in Go that writes your git commit messages and produces code review briefs using ChatGPT models. It has about 1,500 stars on GitHub, is actively maintained in 2026, and installs itself as a git hook so well-written commit messages happen automatically. Note that this is a distinct open-source project from another product with a similar name that is also listed on Tooloso โ this entry covers the appleboy/CodeGPT GitHub repository specifically.
Writing good commit messages is a chore most developers rush, and reviewing diffs takes time. CodeGPT tackles both from the terminal: point it at your staged changes and it drafts a clear, conventional commit message summarizing what changed and why, or generates a brief review summary of the changes for you or your team. It works with current OpenAI models such as GPT-5, GPT-4o, and GPT-4, and it automatically installs a prepare-commit-msg git hook, so the message is generated for you every time you commit rather than only when you remember to ask. Because it is a single Go binary, it drops neatly into existing development environments and CI setups.
CodeGPT is free and open source under the MIT license. There are no plans or subscriptions from the project itself; the only cost is your own OpenAI API usage for the commit messages and review briefs it generates.
Developers and teams who want consistently clear commit histories and faster first-pass code reviews without leaving the terminal โ especially those who commit frequently and find hand-writing messages for every change slows them down.