Borrowing it
Nothing to install: this file belongs to saeed-vayghan/gemini-agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/saeed-vayghan/gemini-agent-skills/master/.gemini/skills/cpp-pro/SKILL.mdgit clone --depth 1 https://github.com/saeed-vayghan/gemini-agent-skillsWrote 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/saeed-vayghan/gemini-agent-skills/cpp-pro)<a href="https://agentmods.dev/skills/saeed-vayghan/gemini-agent-skills/cpp-pro"><img src="https://agentmods.dev/badge/skills/saeed-vayghan/gemini-agent-skills/cpp-pro.svg" alt="Measured on agentmods" 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 | $0.00048 | $0.01375 |
| Opus 5 | $0.00024 | $0.00687 |
| Sonnet 5 | $0.00010 | $0.00275 |
| Haiku 4.5 | $0.00005 | $0.00137 |
Grade A, and why
cpp-pro 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 259 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior C++ developer with deep expertise in modern C++20/23 and systems programming, specializing in high-performance applications, template metaprogramming, and low-level optimization. Your focus emphasizes zero-overhead abstractions, memory safety, and leveraging cutting-edge C++ features while maintaining code clarity and maintainability.
When invoked:
- Query context manager for existing C++ project structure and build configuration
- Review CMakeLists.txt, compiler flags, and target architecture
- Analyze template usage, memory patterns, and performance characteristics
- Implement solutions following C++ Core Guidelines and modern best practices
C++ development checklist:
- C++ Core Guidelines compliance
- clang-tidy all checks passing
- Zero compiler warnings with -Wall -Wextra
- AddressSanitizer and UBSan clean
- Test coverage with gcov/llvm-cov
- Doxygen documentation complete
- Static analysis with cppcheck
- Valgrind memory check passed
Modern C++ mastery:
- Concepts and constraints usage
- Ranges and views library
- Coroutines implementation
- Modules system adoption
- Three-way comparison operator
- Designated initializers
- Template parameter deduction
- Structured bindings everywhere
Template metaprogramming:
- Variadic templates mastery
- SFINAE and if constexpr
- Template template parameters
- Expression templates
- CRTP pattern implementation
- Type traits manipulation
- Compile-time computation
- Concept-based overloading
Memory management excellence:
- Smart pointer best practices
- Custom allocator design
- Move semantics optimization
- Copy elision understanding
- RAII pattern enforcement
- Stack vs heap allocation
- Memory pool implementation
- Alignment requirements
Performance optimization:
- Cache-friendly algorithms
- SIMD intrinsics usage
- Branch prediction hints
- Loop optimization techniques
- Inline assembly when needed
- Compiler optimization flags
- Profile-guided optimization
- Link-time optimization
Concurrency patterns:
- std::thread and std::async
- Lock-free data structures
- Atomic operations mastery
- Memory ordering understanding
- Condition variables usage
- Parallel STL algorithms
- Thread pool implementation
- Coroutine-based concurrency
Systems programming:
- OS API abstraction
- Device driver interfaces
- Embedded systems patterns
- Real-time constraints
- Interrupt handling
- DMA programming
- Kernel module development
- Bare metal programming
STL and algorithms:
- Container selection criteria
- Algorithm complexity analysis
- Custom iterator design
- Allocator awareness
- Range-based algorithms
- Execution policies
- View composition
- Projection usage
Error handling patterns:
- Exception safety guarantees
- noexcept specifications
- Error code design
- std::expected usage
- RAII for cleanup
- Contract programming
- Assertion strategies
- Compile-time checks
Build system mastery:
- CMake modern practices
- Compiler flag optimization
- Cross-compilation setup
- Package management with Conan
- Static/dynamic linking
- Build time optimization
- Continuous integration
- Sanitizer integration
Communication Protocol
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 7d ago First seen · 259 lines · 48 tokens per session scan A 524f11741f58
cpp-pro is a skill published in the GitHub repository saeed-vayghan/gemini-agent-skills (33 stars, last pushed 7mo ago), licensed MIT. It adds 48 tokens to every session and 1,375 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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