explaingit

the-pr-agent/pr-agent

★ 11,189PythonAudience · developerComplexity · 3/5Setup · moderate

TLDR

AI tool that automatically reviews GitHub pull requests and posts feedback as comments, replacing the need for a human code reviewer across GitHub, GitLab, Bitbucket, and Azure DevOps.

Mindmap

mindmap
  root((pr-agent))
    What it does
      Auto-reviews PRs
      Posts inline comments
      Summarizes changes
      Answers code questions
    Commands
      /review
      /improve
      /describe
      /ask
    Tech Stack
      Python backend
      TOML config
      GitHub Actions
    Integrations
      GitHub
      GitLab
      Bitbucket
      Azure DevOps
    AI Backends
      OpenAI GPT
      Claude
      Deepseek
    Audience
      Dev teams
      Open source maintainers
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Things people build with this

USE CASE 1

Automatically post an AI code review on every new pull request in your GitHub or GitLab repository without any manual steps.

USE CASE 2

Generate a plain-English description of what a pull request changes before you decide whether to merge it.

USE CASE 3

Ask questions about a pull request's code in plain English using the /ask command.

USE CASE 4

Run as a GitHub Action so your whole team gets consistent AI feedback on every PR with zero setup per developer.

Tech stack

PythonOpenAI GPTClaudeDeepseekGitHub ActionsTOMLWebhooks

Getting it running

Difficulty · moderate Time to first run · 30min

Requires an AI provider API key (OpenAI, Claude, or Deepseek) and a few lines added to a GitHub Actions workflow file.

Open-source community version, free to use and modify with contributions welcomed.

In plain English

PR-Agent is an open-source tool that uses AI to automatically review pull requests on code repositories. A pull request is how developers propose changes to a shared codebase, normally a human teammate reads through those changes and leaves comments. PR-Agent does that reading automatically, posting feedback as comments directly on the pull request. The tool was originally built by Qodo (formerly CodiumAI) and has since been donated to the open-source community, where it is now maintained independently. A separate paid product from Qodo called Qodo Merge exists with more features, but this repository is the free, community-run version. The main commands are: /review (posts an overall assessment of the changes), /improve (suggests specific code improvements), /describe (generates a plain-English summary of what the pull request does), and /ask (lets you ask questions about the code in plain English). Each command makes a single call to an AI model and typically responds in about 30 seconds. PR-Agent works with GitHub, GitLab, Bitbucket, Azure DevOps, and Gitea. It can be set up as a GitHub Action (a few lines of workflow configuration), run as a command-line tool locally, or deployed as a webhook server. It supports several AI backends including OpenAI GPT, Claude, and Deepseek, so teams can choose based on their existing subscriptions or preferences. The project is written in Python and can be configured through a TOML file, allowing teams to adjust how reviews are categorized and what the AI focuses on. The repository is open source and welcomes community contributions and additional maintainers.

Copy-paste prompts

Prompt 1
Set up PR-Agent as a GitHub Action on my repo so every new pull request gets automatically reviewed, show me the exact workflow YAML I need.
Prompt 2
Using PR-Agent's /improve command, review this diff and suggest specific code improvements: [paste diff here]
Prompt 3
Configure PR-Agent via a TOML file to focus reviews only on security vulnerabilities and performance problems.
Prompt 4
How do I switch PR-Agent from OpenAI to Claude as its AI backend? Show me the config change.
Prompt 5
Run PR-Agent's /describe command on this pull request and give me a plain-English summary of what it does: [PR URL]
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