Pr Review Summarizer

PR Review Summarizer

When to invoke

• "Summarize this PR for me before I review."
• "What's the risk in this diff?"
• "Generate reviewer questions for PR #482."

Inputs needed

1. Diff source — local unified diff file, GitHub PR URL, or GitLab MR URL.
2. Context (optional) — service name, runtime, test framework.

Workflow

1. Fetch / read the diff.
2. Classify changes: code, tests, docs, config, dependencies.
3. Score risk per file using heuristics: lines changed, security-sensitive paths, lack of tests, schema changes.
4. Summarize intent in plain language.
5. Produce a review brief: TL;DR, risk hotspots, missing test coverage, suggested questions.

Output format

## TL;DR
## Risk hotspots (ranked)
## Files changed (summary)
## Missing test coverage
## Reviewer questions
## Suggested follow-ups

Guardrails

• Never approve or merge — the skill produces a review, not a verdict.
• Flag schema, auth, crypto, and migration changes as High by default.
• Cite exact file + line numbers from the diff for every risk claim.

Reference code

review.py reads a unified diff file or fetches via gh pr diff / glab mr diff and produces the brief.