Agent skills for C++ projects
38 open-license skills in our database are built for C++, and 288 skills match a typical C++ project. Below: what coding agents get wrong on C++, 3 picks to start with, and where each agent loads them.
Updated 2026-10-18. Tags used for this page: cpp.
What coding agents get wrong in C++
Agents write raw new and delete where smart pointers fit, ignore integer overflow and lifetime bugs, and mix C++11 habits into C++20 code. CMake files come out in the old global style.
Skills that help
Skills for C++ Core Guidelines, GoogleTest and CTest, memory safety review from Trail of Bits, and vcpkg dependencies.
Cursor rules: the database holds 3 Cursor rule files (.mdc) tagged C++. Cursor reads them from .cursor/rules/. Other agents load SKILL.md skills, so most picks here are skills.
3 picks to start with
1. cpp-coding-standards
C++ coding standards based on the C++ Core Guidelines (isocpp.github.io).
npx skills add affaan-m/ECC --skill cpp-coding-standards
2. cpp-testing
Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding coverage/sanitizers.
npx skills add affaan-m/ECC --skill cpp-testing
3. c-review
Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities.
npx skills add trailofbits/skills --skill c-review
Get the list for your exact project
These 3 fit C++ in general. The scan box opens with a sample C++ description you can edit. A scan reads your repo or description, shows the match count and 2 picks free, and the full curated list (up to 30 picks with install commands, reasons and overlap notes) costs $9 once.
Where each agent loads C++ skills
- Claude Code: project folder
.claude/skills/, install flag--agent claude-code - Cursor: project folder
.cursor/skills/ or .agents/skills/, install flag--agent cursor - Codex: project folder
.agents/skills/, install flag--agent codex - GitHub Copilot: project folder
.github/skills/ or .agents/skills/, install flag--agent github-copilot
npx skills add owner/repo --skill skill-name --agent claude-code
How we count
We match project tags against 99,639 skills from 7,206 public GitHub repos (refreshed 2026-10-18). A skill built for another framework or language is left out, and so is a skill below our relevance floor. The picks on this page come from the ranked list for these tags. We favor broad practice skills over single-task ones. Licenses are shown as each repo declares them. Read a skill before you install it.
Questions
What agent skills should I use for C++?
Start with a broad practice skill built for C++, then add skills for testing and review. In our database 38 skills are tagged for C++ and 288 skills match a typical C++ project. The picks on this page are a place to start. A scan of your repo ranks the full list for your tasks.
Is there a security skill for C++?
Yes. c-review from trailofbits/skills checks C and C++ code for memory corruption, integer overflows and race conditions.
Are there Cursor rules for C++?
Yes. The database holds 3 Cursor rule files (.mdc) tagged C++. Cursor loads them from .cursor/rules/. Claude Code, Codex and Copilot do not read .mdc rules, so pick SKILL.md skills for those agents.
Where do C++ skills go for Claude Code, Cursor, Codex and Copilot?
Claude Code reads .claude/skills/, Cursor reads .cursor/skills/ or .agents/skills/, Codex reads .agents/skills/, and GitHub Copilot reads .github/skills/ or .agents/skills/. The install command takes --agent with the agent name and copies the skill folder there.
Why 3 picks here?
The right list depends on your exact stack and tasks. Run a free scan for your project to see its match count and 2 picks. The full curated list is $9 once.
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By agent
Skills for Claude CodeSkills for CursorSkills for CodexSkills for GitHub Copilot