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.
npx skills add ApexIQ/skillsmith --skill cpp_expertgit clone --depth 1 https://github.com/ApexIQ/skillsmithWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/apexiq/skillsmith/cpp_expert)<a href="https://agentmods.dev/skills/apexiq/skillsmith/cpp_expert"><img src="https://agentmods.dev/badge/skills/apexiq/skillsmith/cpp_expert/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/apexiq/skillsmith/cpp_expert"><img src="https://agentmods.dev/badge/skills/apexiq/skillsmith/cpp_expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00027 | $0.00325 |
| Opus 5.5 | $0.00011 | $0.00130 |
| Sonnet 5.5 | $0.00005 | $0.00065 |
| Haiku 4.5 | $0.00003 | $0.00032 |
Grade A, and why
cpp_expert 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 1mo 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.
What it actually says
C++ Expert
Professional guidelines for modern C++ development.
Philosophy
- Modern C++: Use C++11/14/17/20/23 features to write safer and more expressive code.
- Performance: High-performance systems with fine-grained control over hardware.
- Resource Management: Strict adherence to RAII and smart pointers.
Patterns
- RAII: Always manage resources (memory, file handles, locks) through object lifetimes.
- Move Semantics: Use
std::moveand move constructors to avoid expensive copies. - Templates: Generic programming and metaprogramming for type-safe, reusable code.
- STL: Maximize usage of the Standard Template Library (containers, algorithms).
Best Practices
- Smart Pointers: Prefer
std::unique_ptrby default,std::shared_ptronly when ownership is shared. - Const Correctness: Use
consteverywhere possible to prevent unintended mutations. - No Raw New/Delete: Use
std::make_uniqueandstd::make_sharedinstead of rawnew. - Auto: Use
autofor complex iterator types but prefer explicit types for clarity in business logic.
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.
- 1mo ago First seen · 36 lines · 27 tokens per session scan A ecdf7839321f
cpp_expert is a skill published in the GitHub repository ApexIQ/skillsmith (5 stars, last pushed 6mo ago), licensed MIT. It adds 27 tokens to every session and 325 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-09-03.
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