Claude Code Ultimate Guide is a structured documentation project for learning how to build, operate, and govern coding agents with Claude Code. It serves developers and teams through guidance on agentic workflows, hooks, skills, MCP servers, security, and adoption. The catalogue entries are reusable skills, commands, agents, hooks, instructions, settings, and a plugin drawn from the guide's workflow materials.
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 agentmods add skills/florianbruniaux/claude-code-ultimate-guide/check-cache-bugsnpx skills add FlorianBruniaux/claude-code-ultimate-guide --skill check-cache-bugsgit clone --depth 1 https://github.com/FlorianBruniaux/claude-code-ultimate-guideWrote 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/florianbruniaux/claude-code-ultimate-guide/check-cache-bugs)<a href="https://agentmods.dev/skills/florianbruniaux/claude-code-ultimate-guide/check-cache-bugs"><img src="https://agentmods.dev/badge/skills/florianbruniaux/claude-code-ultimate-guide/check-cache-bugs.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 | $0.00038 | $0.03861 |
| Opus 5 | $0.00019 | $0.01930 |
| Sonnet 5 | $0.00008 | $0.00772 |
| Haiku 4.5 | $0.00004 | $0.00386 |
Grade A, and why
check-cache-bugs scanned grade A with 1 finding 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 2d 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.
Reads agent configuration directorieslowAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
grep -rl "cch=" ~/.claude/hooks/ 2>/dev/null Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
The source is not reproduced here
Licensed CC-BY-SA-4.0
The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 2d ago First seen · 314 lines · 38 tokens per session scan A ea9991d9ab78
check-cache-bugs is a skill published in the GitHub repository FlorianBruniaux/claude-code-ultimate-guide (5,899 stars, last pushed yesterday), licensed CC-BY-SA-4.0. It adds 38 tokens to every session and 3,861 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
aiwiki-research-refresh-privacy
定期为 AiWiki「LLM 隐私保护」主题做一次「高质量一手来源研究 → 去重 → 三道硬闸门把关 → 走隐私条目流水线 → 过闸门」的扩充。当需要发现并新增 LLM 隐私攻防新选题（尤其由月度定时触发器拉起的无人值守会话），且要保证一手出处、不与现有条目重复、不制造假安全时使用。.
aiwiki-privacy-entry-author
为 AiWiki「LLM 隐私保护」主题撰写或修订一条攻防条目（privacy/ 下的 .mdx）。当需要新增/改写隐私条目、并保证第一人称红线、九节结构、三道硬闸门、隐私 frontmatter 与一手出处时使用。.
aiwiki-entry-author
为 AiWiki 撰写或修订一条「误区」条目（docs/ 下的 .mdx）。当需要新增/改写误区条目、并保证第一人称 AI 声音、七段结构、frontmatter 规范与可核查出处时使用。.
aiwiki-research-refresh
定期为 AiWiki 做一次「高质量来源研究 → 去重 → 质量把关 → 走条目流水线 → 过闸门」的扩充。当需要发现并新增「AI 使用误区」新选题（尤其由月度定时触发器拉起的无人值守会话），且要保证来源质量、不与现有条目重复时使用。.
aiwiki-translator
把一条 AiWiki 中文误区条目（docs/ 下的 .mdx）翻译成英文镜像，输出到 i18n/en/ 对应路径。当需要为新增或修订的中文条目生成/更新英文版时使用。.
dev-docs
项目文档记录规范。开发期维护 docs/开发记录.md（导航页）、docs/开发记录/（按日期明细）、 CHANGELOG.md（正式发布日志）、docs/技术架构.md（架构设计）时使用。 提供进度快照、会话交接、按日期分文件、发版记录、架构维护的完整规则。.