HeyDeer AI
Best AI Code Review Agent That Flags Bugs And Fixes Them
HeyDeer is a high-precision AI code review agent that reviews every pull request on GitHub, catches real problems before they ship, and can fix them for you. When your coding agents or teammates write code, HeyDeer reviews it as an independent second reviewer.
Open a pull request and HeyDeer reviews it. Click Autopilot and it fixes findings, failing checks and merge conflicts, pushing to the branch round after round until the PR is ready to merge. Every review includes a walkthrough that groups the change and shows what needs an engineer's attention, and you can mention @heydeer on a PR or issue to ask questions or hand off tasks.
HeyDeer keeps false positives down by having a different model verify each potential issue against the code before posting it. It reports 99.0% precision on ReviewBench, GitHub's open benchmark for AI code review, and found 78% more issues than GitHub Copilot on the same pull requests. It follows your team's REVIEW.md, AGENTS.md and repository checks, and every comment cites the line behind it.
Pricing starts with a free plan (1,000 credits in the first month, 300 after), with Starter at $9/month and Pro at $39/month. There are no seat fees, so one workspace plan covers the whole team. HeyDeer works with GitHub pull requests in public and private repositories.
Features
- Automated pull request reviews with every finding checked against the code
- Autopilot mode that fixes findings, failing checks, and merge conflicts until the PR is ready
- Tested fix pull requests generated automatically for detected issues
- Customizable review rules via REVIEW.md and AGENTS.md files
- Supports both public and private GitHub repositories
- Detailed walkthroughs highlighting what needs human attention
Use Cases
Developers open a pull request and HeyDeer reviews and fixes issues automatically, reducing manual review time. Teams using AI coding agents can have HeyDeer independently verify and correct code before merging. Reviewers can focus on design and architecture while HeyDeer handles routine code checks and fixes.
Comments
We review our own pull requests with HeyDeer every day, so we see its mistakes before you do. A wrong finding costs someone time, or becomes a wrong change once a coding agent applies it. HeyDeer checks each finding against the code before it posts, and can fix what it found until the pull request is ready to merge.
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Comments
We review our own pull requests with HeyDeer every day, so we see its mistakes before you do. A wrong finding costs someone time, or becomes a wrong change once a coding agent applies it. HeyDeer checks each finding against the code before it posts, and can fix what it found until the pull request is ready to merge.
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