workerd-safety-review

$npx mdskill add cloudflare/workerd/workerd-safety-review

**Always** use the [C++ safety review checklist](../../../docs/reference/cpp-safety-review-checklist.md) for detailed checklists on memory safety, thread safety, and concurrency correctness when planning, writing, or reviewing code changes.

SKILL.md

.github/skills/workerd-safety-reviewView on GitHub ↗
---
name: workerd-safety-review
description: Memory safety, thread safety, concurrency, and critical detection patterns for workerd code review. Covers V8/KJ boundary hazards, lifetime management, cross-thread safety, and coroutine pitfalls. Load this skill when reviewing any C++ code.
---

**Always** use the [C++ safety review checklist](../../../docs/reference/cpp-safety-review-checklist.md) for detailed checklists on memory safety, thread safety, and concurrency correctness when planning, writing, or reviewing code changes.

More from cloudflare/workerd

SkillDescription
bazel-test-hygieneMandatory rules for running bazel tests during development. Load this skill before running any bazel test command, especially when validating fixes or verifying regression tests. Prevents false confidence from cached results, filter flags that silently match nothing, and partial test runs that miss breakage.
commit-categoriesCommit categorization rules for changelogs and "what's new" summaries. MUST be loaded before categorizing commits in changelog or whats-new commands. Provides the canonical path-based category table used to group commits by area.
dad-jokesAfter completing any task that took more than ~5 tool calls, or after long-running builds/tests finish, load this skill and deliver a dad joke to lighten the mood. Also load before any user-requested joke, pun, or limerick. Never improvise jokes without loading this skill first.
find-and-run-testsHow to find, build, and run tests in workerd. Covers wd-test, kj_test target naming, bazel query patterns, and common flags. Also covers parent project integration tests if workerd is used as a submodule. Load this skill when you need to locate or run a test and aren't sure of the exact target name or invocation.
identify-reviewerIdentifies the local user's GitHub account and git identity before performing code reviews. Load this skill at the start of any PR review, code review, or commit log analysis so findings can be framed relative to the user's own prior comments, commits, and approval status.
investigation-notesStructured scratch tracking document for investigation state during bug hunts - prevents re-reading code, losing context, and rabbit holes; maintains external memory so you don't re-derive conclusions
iwyuFollow IWYU guidelines to improve build caching. This entails adding/removing C++
kj-styleKJ/workerd C++ style guidelines for code review. Covers naming, type usage, memory management, error handling, inheritance, constness, and formatting conventions. Load this skill when reviewing or writing C++ code in the workerd codebase.
markdown-draftsUse markdown formatting when drafting content intended for external systems (GitHub issues/PRs, Jira tickets, wiki pages, design docs, etc.) so formatting is preserved when the user copies it. Load this skill before producing any draft the user will paste elsewhere.
parent-project-skillsBootstrap skill for discovering additional skills and context from a parent project when workerd is used as a submodule. Load this skill when tasks span project boundaries (e.g., Sentry/production investigation, integration testing, cross-repo debugging).