cpp-coding-standards

A set of modern C++ coding guidelines based on the C++ Core Guidelines. It covers practices for safer resource handling, clearer code, stronger type checks, and more predictable program behavior.

In plain words
What is it for?
Use it for C++17, C++20, or C++23 development, code reviews, refactoring, and architectural choices. It is intended for modern C++ projects rather than general non-C++ or unchanged legacy C code.
Why use it?
It gives developers consistent advice when writing, reviewing, or refactoring C++ code. The guidelines help reduce errors caused by unsafe resources, unclear ownership, and weak types.

Skill for Claude CodeCodex

Part of the omni-dsdd plugin — 40 skills, 16 agents, 1 hook shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/zte-aicloud/co-omnispec/cpp-coding-standards
Any agent
npx skills add ZTE-AICloud/Co-OmniSpec --skill cpp-coding-standards
Clone the repo
git clone --depth 1 https://github.com/ZTE-AICloud/Co-OmniSpec

Made for: Claude Code, Codex.

Or install omni-dsdd, the plugin that ships this one along with the rest of its 40 skills, 16 agents, 1 hook.

Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,022 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00048 $0.06022
Opus 5 $0.00024 $0.03011
Sonnet 5 $0.00010 $0.01204
Haiku 4.5 $0.00005 $0.00602

Measured 3d ago against content hash 70919980c635, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cpp-coding-standards scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

6 near-identical copies found in the catalogue:

omni-dsdd/skills/cpp-coding-standards/SKILL.md · 724 lines

How it starts

The opening of the file, as written. The whole thing — 724 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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)

Cross-Cutting Principles

These themes recur across the entire guidelines and form the foundation:

  1. RAII everywhere (P.8, R.1, E.6, CP.20): Bind resource lifetime to object lifetime
  2. Immutability by default (P.10, Con.1-5, ES.25): Start with const/constexpr; mutability is the exception
  3. Type safety (P.4, I.4, ES.46-49, Enum.3): Use the type system to prevent errors at compile time
  4. Express intent (P.3, F.1, NL.1-2, T.10): Names, types, and concepts should communicate purpose
  5. Minimize complexity (F.2-3, ES.5, Per.4-5): Simple code is correct code
  6. Value semantics over pointer semantics (C.10, R.3-5, F.20, CP.31): Prefer returning by value and scoped objects

Philosophy & Interfaces (P., I.)

Key Rules

Rule Summary
P.1 Express ideas directly in code
P.3 Express intent
P.4 Ideally, a program should be statically type safe
P.5 Prefer compile-time checking to run-time checking
P.8 Don't leak any resources
P.10 Prefer immutable data to mutable data
I.1 Make interfaces explicit
I.2 Avoid non-const global variables
I.4 Make interfaces precisely and strongly typed
I.11 Never transfer ownership by a raw pointer or reference
I.23 Keep the number of function arguments low

Read the full file on GitHub · 724 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 724 lines · 48 tokens per session scan A 70919980c635

Subscribe to this mod's changes

cpp-coding-standards is a skill published in the GitHub repository ZTE-AICloud/Co-OmniSpec (54 stars, last pushed 1mo ago), licensed MIT. It adds 48 tokens to every session and 6,022 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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