/review-pr

name: review-pr
description: Use when asked to review a PR, run a code review loop, or invoke the ralph reviewer against a pull request number or GitHub URL
metadata:
  internal: true

Review PR

Run the `ralph.reviewer.yml` orchestration loop against a pull request. The loop checks out the PR in an isolated worktree, runs tests, reviews the diff, and produces a structured report.

Usage

/review-pr <PR number or URL>

Accepts: `207`, `#207`, or `https://github.com/.../pull/207`

Execution

1. Parse the PR argument

Extract the PR number from the argument. Strip `#` prefix or extract from URL path.

2. Run the reviewer loop

ralph run -H ralph.reviewer.yml -p "Review PR #<N>"

**Bash tool settings:**

• `timeout: 600000` (10 minutes)
• `run_in_background: true`

You are notified when the background job exits; wait for that before reading the report.

3. Display the report

Read and print `.ralph/REVIEW-REPORT.md` to the conversation.

If the report file doesn't exist (loop failed before the synthesizer hat), check for and display whatever intermediate files exist: 1. `.ralph/review-scope.md` — what was scoped 2. `.ralph/review-verification.md` — test results 3. `.ralph/review-findings.md` — review findings

4. Verify cleanup

Check that the review worktree was removed:

ls -d .worktrees/review-<N> 2>/dev/null

• If gone: cleanup succeeded, no action needed.
• If still present: **warn the user** but do NOT force-remove. Say what's there and let them decide.

Also note the presence of intermediate files (`.ralph/review-scope.md`, etc.) — they're useful for debugging but the user may want to clean them up later.

Error Handling

| Situation | Action | |-----------|--------| | Ralph exits non-zero | Display error output. Suggest re-running with `RALPH_DIAGNOSTICS=1` | | Report file missing | Display intermediate files that do exist (scope, verification, findings) | | PR argument missing | Ask the user for the PR number | | PR argument unparseable | Ask the user to provide a bare number, `#N`, or full GitHub URL |

What This Skill Does NOT Do

• Does NOT validate the PR exists (the scoper hat handles that)
• Does NOT modify any source code (read-only review)
• Does NOT post comments to GitHub
• Does NOT own worktree cleanup (verifies only)
• Does NOT enable diagnostics by default