Pr Review Toolkit

PR Review Toolkit

Portable PR review skill adapted for the project plugin. The upstream Anthropic pr-review-toolkit inspired the review lenses; this implementation keeps the procedure and rubrics in references/ so Codex, Claude Code, and Copilot can use the same source of truth.

Review Lenses

• code: project rules, bugs, contracts, maintainability, security, and performance.
• tests: behavioral coverage, edge cases, negative paths, and brittle tests.
• errors: silent failures, broad catches, hidden fallbacks, and unhelpful user-facing errors.
• comments: comment accuracy, stale documentation, redundant comments, and missing rationale.
• types: invariants, validation boundaries, encapsulation, and illegal states.
• simplify: clarity and refactoring opportunities while preserving behavior.
• all: all applicable lenses. This is the default.

Dispatch

Prefer a fresh-context reviewer when the current tool supports subagents. The reviewer must read references/review-procedure.md and references/review-rubrics.md before producing findings.

• Claude Code: run Task(subagent_type: "pr-review-toolkit", ...) if the bundled agent is available; otherwise follow the fallback branch.
• Codex CLI: plugin installation exposes this skill, not a Codex subagent. To use a fresh-context Codex reviewer, first copy agents/templates/pr-review-toolkit.toml to ~/.codex/agents/ or .codex/agents/, then invoke that configured agent if the current Codex surface supports /agent. If no Codex subagent is configured or available, use the fallback branch.
• Copilot CLI: plugin installation exposes this skill and, through .github/plugin/plugin.json, the .agent.md reviewer in agents/templates/. Invoke that configured agent when the current Copilot surface supports custom agents. If running outside a plugin install, copy agents/templates/pr-review-toolkit.agent.md to .github/agents/ or ~/.copilot/agents/. If no custom agent is available, use the fallback branch.
• Fallback: run the review inline in the current context after reading both reference files. This is the portable default path.

Inputs To Collect

• Scope: PR number, branch range, staged changes, unstaged changes, or explicit files.
• Lens selection: one or more of code, tests, errors, comments, types, simplify, or all.
• Mode: advisory review by default; edit mode only when the user explicitly asks to simplify/refine or implement review fixes.

Required Workflow

1. Read references/review-procedure.md.
2. Read references/review-rubrics.md.
3. Inspect the local project rules before generic preferences: nearest AGENTS.md, CLAUDE.md, .rules/, and relevant framework guidance.
4. Determine the diff scope with git status, git diff, git diff --cached, gh pr view, or gh pr diff as appropriate.
5. Select applicable lenses. Use code for every review unless the user explicitly excludes it.
6. Report findings first, ordered by severity, with concrete file and line references.
7. If no actionable findings exist, say so clearly and list any residual test gaps or verification limits.

Output Shape

Use this structure unless the user asks for a different format:

**Findings**
- Critical: ...
- Important: ...
- Moderate: ...

**Questions**
- ...

**Residual Risk**
- ...

For simplify in edit mode, make the smallest behavior-preserving patch, run the relevant tests or checks, and summarize what changed.

Attribution

Inspired by Anthropic's pr-review-toolkit plugin in anthropics/claude-code/plugins/pr-review-toolkit. The upstream plugin README identifies the plugin license as MIT; this project implementation is written as an original project skill with attribution rather than a verbatim copy.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: neuromechanist
• Source: neuromechanist/research-skills
• License: BSD-3-Clause

Install and usage instructions live in the source repository linked above.