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 RealDougEubanks/ClaudeMarketplace --skill golden-rulesgit clone --depth 1 https://github.com/RealDougEubanks/ClaudeMarketplaceWrote 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/realdougeubanks/claudemarketplace/golden-rules)<a href="https://agentmods.dev/skills/realdougeubanks/claudemarketplace/golden-rules"><img src="https://agentmods.dev/badge/skills/realdougeubanks/claudemarketplace/golden-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/realdougeubanks/claudemarketplace/golden-rules"><img src="https://agentmods.dev/badge/skills/realdougeubanks/claudemarketplace/golden-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 | $0.00042 | $0.04330 |
| Opus 5 | $0.00021 | $0.02165 |
| Sonnet 5 | $0.00008 | $0.00866 |
| Haiku 4.5 | $0.00004 | $0.00433 |
Grade A, and why
golden-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 12d 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 — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Golden Rules — Always-On Project Standards
Install mandatory security, coding, design, testing, error handling, API contract, and performance standards into this project's CLAUDE.md so they are active for every Claude Code session automatically.
This skill's version: 1.8.0 (also stamped in the marker comment inside the Golden Rules Block below).
Instructions
-
Use Read to check if
./CLAUDE.mdexists in the current working directory. -
Use Grep to search
./CLAUDE.mdfor the string## Golden Rules(if the file exists).- Not found: proceed to step 3 (fresh install).
- Found, no argument given: check for the version marker comment
<!-- golden-rules vX.Y.Z -->inside the section.- Marker version equals this skill's version: inform the user the Golden Rules are current and stop.
- Marker is missing or older: inform the user an older install was found and that
/golden-rules --updatewill replace it with the current version. Stop without modifying anything.
- Found,
--updategiven: if the marker is missing or older than this skill's version, replace the entire existing## Golden Rulessection (from the## Golden Rulesheader up to the next level-2 (##) header, or end of file) with the Golden Rules Block below. If already current, say so and stop. - Found,
--forcegiven: replace the existing section unconditionally.
-
If
CLAUDE.mddoes not exist, use Write to create it with the Golden Rules Block below as the full content. IfCLAUDE.mdexists but lacks the section, use Edit to append the Golden Rules Block to the end of the file. -
Confirm to the user what was written (installed fresh, updated from vX.Y.Z, or already current) and that the Golden Rules are now active for every Claude Code session in this project.
Golden Rules Block
Write or append the following content verbatim:
Golden Rules
GOLDEN RULES (MANDATORY — ALL WORK IN THIS PROJECT MUST FOLLOW THESE)
What ships with it
4 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.
- 12d ago First seen · 205 lines · 42 tokens per session scan A 672715e14bec
golden-rules is a skill published in the GitHub repository RealDougEubanks/ClaudeMarketplace (1 stars, last pushed today), licensed MIT. It adds 42 tokens to every session and 4,330 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 2026-08-31.
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