ChatGPT ProBot is an open-source GitHub App that brings ChatGPT into issues and pull requests: mention it and the bot joins the conversation, answers questions and can review or refactor code in pull requests. It is built on the Probot framework and is free to install on your repositories. The GitHub project has around 410 stars and was last updated in 2023.
The bot installs as a standard GitHub App — the code also offers one-click deployment to Vercel for self-hosting. Once added to a repository, typing a trigger such as /chatgpt in an issue or pull request comment starts a dialogue with the model, with the surrounding thread as context. Its showcase features target maintainer workflows: ask it questions about the code, request a review of a pull request, or ask for refactoring suggestions, and it replies in the thread like a human reviewer. It was one of the wave of early-2023 projects exploring LLM assistance inside GitHub itself, before first-party Copilot features covered the same ground. The implementation is small and readable, making it a useful template for building Probot-based AI automations of your own.
Example interactions in the repository show the bot summarising issues, answering follow-up questions and commenting on pull request diffs. Since it is a standard Probot app, installation takes minutes from its GitHub App page or a self-hosted deployment, and teams can extend it with their own event handlers — for instance triaging new issues automatically — while reusing its ChatGPT plumbing.
ChatGPT ProBot is free and open source. Self-hosting is free; you only cover your own OpenAI API usage.
Open-source maintainers and developers who want lightweight AI assistance inside GitHub threads, or a starting template for Probot-based AI bots.