review-pr

name	review-pr
description	Review a PR on metalk8s (an opinionated Kubernetes distribution for long-term on-prem deployments)
argument-hint	<pr-number-or-url>
disable-model-invocation	true
allowed-tools	Read, Bash(gh repo view *), Bash(gh pr view *), Bash(gh pr diff *), Bash(gh pr comment *), Bash(gh api *), Bash(git diff *), Bash(git log *), Bash(git show *)

Review GitHub PR

You are an expert code reviewer. Review this PR: $ARGUMENTS

Determine PR target

Parse $ARGUMENTS to extract the repo and PR number:

• If arguments contain REPO: and PR_NUMBER: (CI mode), use those values directly.
• If the argument is a GitHub URL (starts with https://github.com/), extract owner/repo and the PR number from it.
• If the argument is just a number, use the current repo from gh repo view --json nameWithOwner -q .nameWithOwner.

Output mode

• CI mode (arguments contain REPO: and PR_NUMBER:): post inline comments and summary to GitHub.
• Local mode (all other cases): output the review as text directly. Do NOT post anything to GitHub.

Steps

1. Fetch PR details:

gh pr view <number> --repo <owner/repo> --json title,body,headRefOid,author,files
gh pr diff <number> --repo <owner/repo>

2. Manage existing Claude Code threads (run before reviewing the diff):

   Fetch all review threads with full pagination — loop until hasNextPage is false, merging nodes across pages:

   gh api graphql -f query='{repository(owner:"<owner>",name:"<repo>"){pullRequest(number:<number>){reviewThreads(first:100){pageInfo{hasNextPage endCursor}nodes{id isResolved isOutdated resolvedBy{login}comments(first:20){nodes{databaseId author{login}body path line}}}}}}}'
   

   For pagination add after:"<endCursor>" to reviewThreads(first:100, after:"<endCursor>") and repeat until hasNextPage is false.

   For each thread whose first comment contains — Claude Code:

   OUTDATED (isOutdated=true, isResolved=false) → resolve silently, then skip to next thread:

   gh api graphql -f query='mutation{resolveReviewThread(input:{threadId:"<id>"}){thread{isResolved}}}'
   

   ACTIVE — read ALL comments, find human replies (author.login != "claude[bot]"), classify:

   • no_human_reply — no human comments, not resolved → add {path, line, body_excerpt} to SKIP SET. No further action.

   • author_asked_question — human replied with a direct question (asking for clarification, why it's a problem, what the fix is) → answer in the thread. Add to SKIP SET.

     gh api -X POST -H "Accept: application/vnd.github+json" "repos/<owner/repo>/pulls/<number>/comments" -f body="<answer><br><br>— Claude Code" -F in_reply_to=<databaseId_of_first_comment> -f commit_id="<headRefOid>"
     

   • justified — human reply contains substantive technical reasoning (why issue isn't applicable, acknowledged trade-off, relevant constraint) → accept silently. Add to SKIP SET. Optionally resolve thread if still open.

   • unjustified_dismissal — (thread resolved by human with no reply, OR reply is dismissive with no technical reasoning (, , with nothing substantive)) AND flagged code still unchanged in new diff → reply in thread (do NOT post new top-level comment). Add to SKIP SET.

Area	What to check
Go error handling	Use fmt.Errorf("...: %w", err) for wrapping, not %v; no swallowed errors
Go context propagation	Pass context.Context through call chains; respect cancellation
Go goroutine leaks	Goroutines must have exit conditions; use errgroup where appropriate
Kubernetes operator	RBAC scoping (least-privilege), reconciler idempotency, status subresource updates only via Status().Update()
Interface compliance	Verify implementations satisfy interfaces at compile time (e.g. var _ SomeInterface = &MyType{})
TypeScript/React	Prop changes (missing/wrong types), missing key props in lists, proper hook usage, no console.log in production code
Scality dep pinning	@scality/core-ui, @scality/module-federation must be pinned to a specific tag/commit, not a branch
External dep pinning	@kubernetes/client-node must be pinned to a specific git tag in package.json
Salt states	Correct use of requisites (require, watch, onchanges); no hardcoded credentials; proper Jinja templating; proper map.jinja templating; ochestartions states ordering
Helm/Kustomize	Resource limits set, security contexts defined, proper label selectors, upgrade path preserved
Python	No bare except:; specific exception types; type hints on new functions; no blocking calls in async context
Python / buildchain	Correct doit task dependencies and file targets; proper pytest fixtures; behave step definitions match feature files; no hardcoded paths (use constants.py)
Security	No secrets/tokens in plain text; no OWASP-relevant issues (injection, XSS, insecure defaults)
Breaking changes	Public API changes, CRD schema changes, Salt pillar schema changes, UI prop interface changes
Test coverage	New logic paths have corresponding unit tests; changed functions have updated tests; no test files deleted without replacement, no orphan test that would be never run

5. Deliver your review:

If CI mode: post to GitHub

Part A: Inline file comments

For each issue found, check the SKIP SET from step 2 first. The SKIP SET contains {path, line, body_excerpt} entries. If an entry exists with the same path and line AND the body_excerpt covers the same root issue → skip. A genuinely different issue at the same path+line may still be posted.

Otherwise post a comment on the exact file and line:

gh api -X POST -H "Accept: application/vnd.github+json" "repos/<owner/repo>/pulls/<number>/comments" -f body="Your comment<br><br>— Claude Code" -f path="path/to/file" -F line=<line_number> -f side="RIGHT" -f commit_id="<headRefOid>"

The command must stay on a single bash line. Never use newlines in bash commands — use <br> for line breaks in comment bodies. Never put <br> inside code blocks or suggestion blocks.

Each inline comment must:

• Be short and direct — say what's wrong, why it's wrong, and how to fix it in 1-3 sentences
• No filler, no complex words, no long explanations
• When the fix is a concrete line change (not architectural), include a GitHub suggestion block so the author can apply it in one click:

  ```suggestion
  corrected-line-here
  ```
  

  Only suggest when you can show the exact replacement. For architectural or design issues, just describe the problem. Example with a suggestion block:

  gh api ... -f body=$'Missing the shared-guidelines update command.<br><br>\n```suggestion\n/plugin update shared-guidelines@scality-agent-hub\n/plugin update scality-skills@scality-agent-hub\n```\n<br><br>— Claude Code' ...
  

• When the comment contains a suggestion block, use $'...' quoting with \n for code fence boundaries. Escape single quotes as \' (e.g., don\'t)
• End with: — Claude Code

Use the line number from the new version of the file (the line number you'd see after the PR is merged), which corresponds to the line parameter in the GitHub API.

Part B: Summary comment

gh pr comment <number> --repo <owner/repo> --body "LGTM<br><br>Review by Claude Code"

The command must stay on a single bash line. Never use newlines in bash commands — use <br> for line breaks in comment bodies.

Do not describe or summarize the PR. For each issue, state the problem on one line, then list one or more suggestions below it:

- <issue>
  - <suggestion>
  - <suggestion>

If no new issues and no thread replies needed: just say "LGTM". End with: Review by Claude Code

If local mode: output the review as text

Do NOT post anything to GitHub. Instead, output the review directly as text.

For each issue found, output:

**<file_path>:<line_number>** — <what's wrong and how to fix it>

When the fix is a concrete line change, include a fenced code block showing the suggested replacement.

At the end, output a summary section listing all issues. If no issues: just say "LGTM".

End with: Review by Claude Code

What NOT to do

• Do not comment on markdown formatting preferences
• Do not suggest refactors unrelated to the PR's purpose
• Do not praise code — only flag problems or stay silent
• If no issues are found, post only a summary saying "LGTM"
• Do not flag style issues already covered by the project's linter (biome, golangci-lint, pylint)