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PR-Agent

AI-driven code reviews you can host and customize yourself

Code Quality & Review Automation

Free, self‑hosted AI code review agent with CLI, GitHub Action, and multi‑platform support for GitHub, GitLab, BitBucket, and Azure DevOps.

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Overview

Overview

PR-Agent is a community‑maintained AI‑powered code review tool that you can run on your own infrastructure. It offers core review commands such as /describe, /review, /improve, and /ask, letting developers get automated feedback directly in pull requests or via the command line.

How it works

Install the GitHub Action, configure your OpenAI (or Claude) API key, and PR-Agent will comment on new PRs with suggestions, bug detection, and improvement ideas. The same engine can be invoked locally with the CLI for on‑the‑fly analysis, or integrated with GitLab, BitBucket, and Azure DevOps through webhooks or app installations. Because the code is fully open, you retain control over data, can tailor prompts, and extend functionality to fit unique workflows.

Who should use it

Ideal for developers and teams that need full control, custom integrations, or strict data‑privacy policies. It requires you to manage API keys and hosting, but in return you get a free, extensible review assistant without vendor lock‑in.

Highlights

Core AI review commands (/describe, /review, /improve, /ask)
Supports GitHub, GitLab, BitBucket, and Azure DevOps
CLI and GitHub Action for easy CI integration
Fully open source – customize prompts and workflow

Pros

  • Free and open source with full source access
  • Self‑hosted gives complete control over data and environment
  • Works across multiple version‑control platforms
  • Customizable prompts and integration points

Considerations

  • User must provide and manage their own API keys
  • Requires infrastructure setup and maintenance
  • No built‑in managed hosting or automatic updates
  • Advanced features (e.g., compliance rules) are only in the commercial product

Managed products teams compare with

When teams consider PR-Agent, these hosted platforms usually appear on the same shortlist.

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Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.

Fit guide

Great for

  • Developers who want to self‑host and customize the review pipeline
  • Projects with strict data‑privacy or compliance requirements
  • Teams that need multi‑platform support across GitHub, GitLab, etc.
  • Open‑source maintainers looking for a free AI review assistant

Not ideal when

  • Organizations preferring zero‑setup, managed SaaS solutions
  • Non‑technical users without capacity to manage API keys or servers
  • Teams that require the advanced compliance and tracking features of Qodo Merge
  • Projects that cannot allocate resources for infrastructure upkeep

How teams use it

Automated PR reviews in CI

Pull requests receive AI‑generated feedback automatically on each push, catching bugs and suggesting improvements before merge.

On‑demand code improvement via comment

Developers can comment `@CodiumAI-Agent /improve` on any PR to get targeted refactoring suggestions.

Local development feedback

Run `pr-agent` from the CLI to analyze code changes locally, integrating suggestions into the developer’s workflow.

Cross‑platform repository integration

Deploy webhooks or apps for GitLab, BitBucket, or Azure DevOps to bring AI reviews to any repository.

Tech snapshot

Python100%
Dockerfile1%
Shell1%

Tags

pull-requestcode-reviewdevtoolscodereviewcoding-assistantpull-requestsgpt-4openai

Frequently asked questions

Do I need to pay to use PR-Agent?

No, PR-Agent is free and open source. You only pay for the underlying AI model provider (e.g., OpenAI).

Which version‑control systems are supported?

GitHub, GitLab, BitBucket, and Azure DevOps are all supported via actions, webhooks, or app installations.

What API keys are required?

You must supply an API key for the LLM service you use (OpenAI, Claude, etc.) via environment variables.

Can I run PR-Agent without internet access?

PR-Agent requires connectivity to the LLM provider’s API, so an internet connection is necessary.

How do I contribute to the project?

Fork the repository, make your changes, and open a pull request. See the CONTRIBUTING guide for details.

Project at a glance

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Watchers
9,896
Forks
1,245
LicenseAGPL-3.0
Repo age2 years old
Last commit3 days ago
Primary languagePython

Last synced 12 hours ago