How do I install the C Bounds Safety skill?

Run npx skillmds@latest add jlreyes/c-bounds-safety in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is C Bounds Safety safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with C Bounds Safety?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is C Bounds Safety free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published C Bounds Safety?

jlreyes (@jlreyes) published this skill. Their other Agent Skills are listed on their SkillMD profile.

C Bounds Safety by jlreyes — Agent Skill

Name: C Bounds Safety
Author: jlreyes

C Bounds Safety

Apple's guide to the C -fbounds-safety language extension: the language model, pointer annotations (__counted_by, __sized_by, __ended_by, __single, __indexable, __null_terminated and friends, ptrcheck.h), adoption strategy for existing C code, compiler build settings and modes, and runtime debugging of bounds violations. Use when reading, writing, reviewing, or debugging C code that uses or wants to adopt -fbounds-safety. (Content extracted from your local Xcode on install.)

jlreyes Updated Sep 17, 2026

File contents

c-bounds-safety (stub)

Not yet extracted. This is a stub. The real skill is Apple-authored content that ships inside Xcode; Apple's license doesn't permit redistributing it, so this kit extracts it from YOUR Xcode instead.

To install the real content (requires Xcode 27+, ~5 seconds), run the extraction script that ships alongside these skills. Relative to this skill's own directory it is at:
../apple-api-updates/scripts/extract-apple-skills.sh
(In the Claude Code plugin layout it is also exposed at the plugin root as scripts/extract-apple-skills.sh. If apple-api-updates is not installed alongside, install it — the script ships inside it.)

If you are an agent reading this: resolve this SKILL.md's path and run that script with your shell tool. Skill bodies are cached for the session and you cannot run /reload-plugins yourself (it's a user command), so after extracting: answer the current request by reading the extracted SKILL.md and its references/ directly from disk (plain markdown, fully usable), and ask the user to run /reload-plugins — or start a new session — so future invocations serve the real content.

Frequently asked questions