AI PR Reviewer

Automated Pull Request Review with AI

Use AI as your first-pass reviewer. Paste your PR's git diff and get a risk-flagged summary of every change — what's safe, what needs scrutiny, and what questions to ask — in seconds.

🤖 Review My PR with AI →

What the AI review flags

🔐

Security risks — hardcoded secrets, unvalidated input, SQL construction from user data

💥

Breaking changes — modified public APIs, changed function signatures, removed exports

⚠️

Unchecked errors — missing error returns, swallowed exceptions, silent failures

🔄

Logic changes — altered conditions, flipped boolean logic, changed defaults

📊

Scope summary — how many files and lines changed, which areas are affected

❓

Review questions — specific things to ask the author or verify in tests

How it works

1

Export the PR diff

On GitHub: open the PR → Files changed tab → download .diff. Or run git diff main...HEAD locally. Copy the full output.

2

Paste into AI Diff Summarizer

Paste your diff. Add your Anthropic API key once (stored only in your browser). Click Summarize — Claude reads the entire diff, not just a sample.

3

Use the output to guide your review

The AI output becomes your review checklist: which files need the most attention, what risks to verify, and what questions to ask. Then open the actual PR with fresh eyes.

Note: AI review is a first pass, not a replacement for human review. It catches mechanical issues fast — missing null checks, obvious injection vectors, API surface changes — but misses business logic bugs and domain-specific correctness. Use it to help your human reviewer focus on the high-value issues.

Frequently asked questions

How can AI help review a pull request?
AI PR reviewers read every line of a git diff and provide: (1) a high-level summary of what the PR does, (2) a file-by-file breakdown of each change, (3) flagged risk areas — security issues, missing error handling, API breaking changes, (4) suggested questions for the human reviewer to ask the author. AI review augments, not replaces, human review.
What's the difference between an AI summary and an AI code review?
A summary tells you what changed. A code review tells you what to worry about. The AI PR Reviewer mode in AI Diff Summarizer does both: it summarizes each file's changes AND flags specific risks like unchecked error returns, hardcoded credentials, missing input validation, or API surface changes that could break callers.
Can AI PR review replace a human code reviewer?
No — and it shouldn't. AI reviewers are fast at catching mechanical issues (missing null checks, potential injection points, obvious logic errors) but miss business logic bugs, architectural missteps, and domain-specific correctness. Use AI review as a first pass that helps your human reviewer focus on the high-value issues instead of the mechanical ones.
Is my code kept private during AI review?
Yes. Your diff is sent directly from your browser to Anthropic's API using your own API key — it never passes through any third-party server. Nothing is stored or logged. The tool is entirely client-side: no backend, no database, no account required.
→ PR Description Generator → Git Diff Explainer → Code Review Summary → Commit Message Generator → Explain Code Changes