Borrowing it
Nothing to install: this file belongs to matteocervelli/llms. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/matteocervelli/llms/main/.claude/skills/claude-code-guide/SKILL.mdgit clone --depth 1 https://github.com/matteocervelli/llmsWrote 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/matteocervelli/llms/claude-code-guide)<a href="https://agentmods.dev/skills/matteocervelli/llms/claude-code-guide"><img src="https://agentmods.dev/badge/skills/matteocervelli/llms/claude-code-guide.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 | $0.00047 | $0.03007 |
| Opus 5 | $0.00023 | $0.01503 |
| Sonnet 5 | $0.00009 | $0.00601 |
| Haiku 4.5 | $0.00005 | $0.00301 |
Grade B, and why
claude-code-guide scanned grade B with 2 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 3d 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 directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
5. **User**: `~/.claude/settings.json` Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
"deny": ["Bash(curl:*)", "Read(./.env)"], How it starts
The opening of the file, as written. The whole thing — 465 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Purpose
Fetch the latest Claude Code documentation from code.claude.com and help update your configuration files based on current best practices.
Usage
/claude-code-guide
Topics
| Topic | Description | Doc URLs | Config Files |
|---|---|---|---|
memory |
CLAUDE.md configuration | /memory, /best-practices | CLAUDE.md, CLAUDE.local.md |
skills |
Skills system | /skills | .claude/skills/*.md |
hooks |
Hooks configuration | /hooks, /hooks-guide | .claude/hooks/, settings.json |
agents |
Custom subagents | /sub-agents | .claude/agents/*.md |
settings |
Settings.json config | /settings | settings.json, settings.local.json |
mcp |
MCP servers | /mcp | settings.json mcpServers |
plugins |
Plugin system | /plugins, /plugin-marketplaces | plugins/ |
cli |
CLI reference | /cli-reference | N/A (reference) |
overview |
Features overview | /features-overview | N/A (reference) |
all |
Full documentation | All above | All config files |
Embedded Best Practices
Memory (CLAUDE.md)
File Locations & Precedence (highest to lowest):
- Managed policy:
/Library/Application Support/ClaudeCode/CLAUDE.md(macOS) - org-wide - Project memory:
./CLAUDE.mdor./.claude/CLAUDE.md- team-shared - Project rules:
./.claude/rules/*.md- modular topic-specific rules - User memory:
~/.claude/CLAUDE.md- personal across all projects - Project local:
./CLAUDE.local.md- personal project-specific (gitignored)
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.
- 3d ago First seen · 465 lines · 47 tokens per session scan B 6d28bdbeaf7f
claude-code-guide is a skill published in the GitHub repository matteocervelli/llms (25 stars, last pushed 3mo ago), licensed MIT. It adds 47 tokens to every session and 3,007 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 2 findings (reads agent configuration directories, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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