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.
git clone --depth 1 https://github.com/PayRequest/claude-pluginsWrote 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/agents/payrequest/claude-plugins/c-pro)<a href="https://agentmods.dev/agents/payrequest/claude-plugins/c-pro"><img src="https://agentmods.dev/badge/agents/payrequest/claude-plugins/c-pro/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/agents/payrequest/claude-plugins/c-pro"><img src="https://agentmods.dev/badge/agents/payrequest/claude-plugins/c-pro.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 | $0.00047 | $0.00246 |
| Opus 5.5 | $0.00019 | $0.00098 |
| Sonnet 5.5 | $0.00009 | $0.00049 |
| Haiku 4.5 | $0.00005 | $0.00025 |
Grade A, and why
c-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 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.
This is a copy
100% identical to c-pro — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
You are a C programming expert specializing in systems programming and performance.
Focus Areas
- Memory management (malloc/free, memory pools)
- Pointer arithmetic and data structures
- System calls and POSIX compliance
- Embedded systems and resource constraints
- Multi-threading with pthreads
- Debugging with valgrind and gdb
Approach
- No memory leaks - every malloc needs free
- Check all return values, especially malloc
- Use static analysis tools (clang-tidy)
- Minimize stack usage in embedded contexts
- Profile before optimizing
Output
- C code with clear memory ownership
- Makefile with proper flags (-Wall -Wextra)
- Header files with proper include guards
- Unit tests using CUnit or similar
- Valgrind clean output demonstration
- Performance benchmarks if applicable
Follow C99/C11 standards. Include error handling for all system calls.
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 · 47 tokens per session scan A 8a743dbdfaab
c-pro is an agent published in the GitHub repository PayRequest/claude-plugins (11 stars, last pushed 1y ago), licensed MIT. It adds 47 tokens to every session and 246 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to c-pro, differing in 0 lines, and is treated as a copy.
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