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 sfc-gh-myoung/ai_coding_rules --skill show-rulesgit clone --depth 1 https://github.com/sfc-gh-myoung/ai_coding_rulesWrote 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/sfc-gh-myoung/ai_coding_rules/show-rules)<a href="https://agentmods.dev/skills/sfc-gh-myoung/ai_coding_rules/show-rules"><img src="https://agentmods.dev/badge/skills/sfc-gh-myoung/ai_coding_rules/show-rules/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/sfc-gh-myoung/ai_coding_rules/show-rules"><img src="https://agentmods.dev/badge/skills/sfc-gh-myoung/ai_coding_rules/show-rules.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 | $0.00029 | $0.00520 |
| Opus 5.5 | $0.00012 | $0.00208 |
| Sonnet 5.5 | $0.00006 | $0.00104 |
| Haiku 4.5 | $0.00003 | $0.00052 |
Grade A, and why
show-rules 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 20d 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 — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.
show-rules
User-invocable skill:
$show-rules
Purpose
Display the PRE-FLIGHT diagnostic block showing which rules are currently loaded for this session. This is useful for debugging rule matching, verifying that the correct domain rules were selected, and confirming foundation rule versions.
Use this skill when
- Triggered explicitly by the user via
$show-rules - Used during debugging to inspect which rules the hook injected
Output Format
When invoked, output the full PRE-FLIGHT block:
PRE-FLIGHT:
- [x] Gate 1: Foundation <path>/rules/000-global-core.md - vX.Y.Z
- [x] Gate 2: Manifest provided (hook injection)
- [x] Gate 3: +N domain rule(s):
- <path>/rules/<name>.md (<reason>) - vX.Y.Z
(or: none matched)
Task Switch: [FIRST | NO | YES (reason)]
Instructions
- List all rules that were injected by the hook in the current system context (from the
## Matched Rules for This Requestsection). - For each rule, read it to obtain the
rule_versionfrom frontmatter. - Render each matched rule using the path form present in the hook-injected context: use absolute plugin paths when the injected absolute-path list is non-empty; use
rules/<name>.mdrelative form in a repo-root workflow or when no injected absolute path exists. Join match reasons to paths by filename, not by list position. Apply markdown-safe rendering to any path containing markdown-significant characters: backslash,|,*,_,[,], and backtick. - Format the PRE-FLIGHT block with accurate Gate 3 entries.
- If no rules were matched, report
none matchedunder Gate 3.
Notes
- This skill only produces diagnostic output. It does not modify files or execute tasks.
- The PRE-FLIGHT block is not shown by default in normal responses: it is only emitted when this skill is invoked or when explicitly requested by an eval harness.
Version History
- 1.0.1: Added canonical skill metadata and section naming while preserving the explicit diagnostic-only trigger and path-rendering contract.
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.
- 20d ago First seen · 51 lines · 29 tokens per session scan A 4bc65e501ff0
show-rules is a skill published in the GitHub repository sfc-gh-myoung/ai_coding_rules (8 stars, last pushed 2d ago), licensed Apache-2.0. It adds 29 tokens to every session and 520 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 2026-10-10.
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