Cpp Coding Standards

Gives Claude a comprehensive reference to the C++ Core Guidelines so it can write, review, and refactor modern C++ code. Covers the big stuff like RAII everywhere, immutability by default, smart pointers over raw pointers, and the Rule of Zero/Five. Includes specific guidance on parameter passing (cheap types by value, others by const ref), when to use constexpr and noexcept, and how to handle class hierarchies with virtual destructors. The tables and code examples are detailed enough that Claude can cite specific rules like "I.11: never transfer ownership by raw pointer" when reviewing your code. Best for C++17 and later. If you're stuck in legacy C or bare metal with weird constraints, you'll need to adapt selectively.

skills.sh installs: 6.2K
GitHub stars: 300.3K
last updated: Aug 21, 2026

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Install

$ npx -y skills add affaan-m/ecc --skill cpp-coding-standards --agent claude-code

Installs into .claude/skills of the current project.

Files

C++ Coding Standards (C++ Core Guidelines)

Comprehensive coding standards for modern C++ (C++17/20/23) derived from the C++ Core Guidelines. Enforces type safety, resource safety, immutability, and clarity.

When to Use

Writing new C++ code (classes, functions, templates)
Reviewing or refactoring existing C++ code
Making architectural decisions in C++ projects
Enforcing consistent style across a C++ codebase
Choosing between language features (e.g., enum vs enum class, raw pointer vs smart pointer)

When NOT to Use

Non-C++ projects
Legacy C codebases that cannot adopt modern C++ features
Embedded/bare-metal contexts where specific guidelines conflict with hardware constraints (adapt selectively)