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/MicSm/boffinWrote 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/rules/micsm/boffin/boffin-cpp-routing)<a href="https://agentmods.dev/rules/micsm/boffin/boffin-cpp-routing"><img src="https://agentmods.dev/badge/rules/micsm/boffin/boffin-cpp-routing/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/rules/micsm/boffin/boffin-cpp-routing"><img src="https://agentmods.dev/badge/rules/micsm/boffin/boffin-cpp-routing.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 | $0.00000 | $0.00184 |
| Opus 5.5 | $0.00000 | $0.00074 |
| Sonnet 5.5 | $0.00000 | $0.00037 |
| Haiku 4.5 | $0.00000 | $0.00018 |
Grade A, and why
boffin-cpp-routing 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++ Pack Activation
For C++ source files:
- Load
packs/cpp-architecture/pack.urf.md. - Use its
## ROUTINGand## LEAVESrecords for leaf selection. - Use its
## STAGE-REFSrecords to gather the family K ids (and their mirrored X ids) at each stage of the walk.
For ambiguous .h or .c files that reach this rule via the always-on router:
- Apply cpp-architecture only if the file contains C++ constructs (class, template, namespace, references, std::, noexcept, overloads).
- If the file is plain C, stay on universal only.
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 · 19 lines · 184 tokens per session scan A f214b281e132
boffin-cpp-routing is a cursor rule published in the GitHub repository MicSm/boffin (37 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 184 tokens. 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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