Pull Request Code Review Prompt
Review a PR diff for bugs, style issues, missing tests, and security concerns.
Review the following pull request diff as a senior engineer. Context: [what this PR does] Tech stack: [language/framework] Diff: [paste diff] Provide: 1. Summary of changes 2. Potential bugs or logic errors 3. Style and maintainability issues 4. Missing tests or edge cases 5. Security concerns (input validation, auth, secrets) 6. Performance observations 7. Actionable suggestions prioritized by severity Be constructive and specific; cite line numbers where possible.
How to use this prompt
Paste the smallest relevant code block. Review, test, and lint any generated code before merging; models can hallucinate APIs.
- Copy the full prompt above.
- Replace the bracketed placeholders with your own details.
- Paste it into chatgpt, claude, gemini (or your preferred AI tool).
- Iterate on the output: add constraints, ask follow-ups, or combine multiple results.
Why this prompt works
It gives the AI a clear role, specific inputs, and an output format. That structure reduces vague responses and gives you a draft you can refine in minutes instead of hours.
Frequently asked questions
Should I paste the entire diff?
For large PRs, split into logical chunks to keep the review focused.
Can this replace human review?
No. Use it as a first pass to catch issues before asking teammates.