A skill for comparing the repository’s setup and bootstrap instructions with the project’s core configuration guides. It checks whether examples, names, and stated behavior agree.

Use it to check JSON templates, hook names, settings keys, skill metadata, MCP configuration, feature lists, and best-practice claims across setup and bootstrap guides.

It helps find documentation that has drifted out of sync with the configuration formats or generated files it describes.

sync-skills — Skill for Claude Code by paulo-yamagishi

Install

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.

Any agent

npx skills add paulo-yamagishi/claude-code-setup --skill sync-skills

Clone the repo

git clone --depth 1 https://github.com/paulo-yamagishi/claude-code-setup

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/paulo-yamagishi/claude-code-setup/sync-skills/github.svg)](https://agentmods.dev/skills/paulo-yamagishi/claude-code-setup/sync-skills)

Your own site

<a href="https://agentmods.dev/skills/paulo-yamagishi/claude-code-setup/sync-skills"><img src="https://agentmods.dev/badge/skills/paulo-yamagishi/claude-code-setup/sync-skills/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/paulo-yamagishi/claude-code-setup/sync-skills"><img src="https://agentmods.dev/badge/skills/paulo-yamagishi/claude-code-setup/sync-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 421 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00016	$0.00421
Opus 5	$0.00008	$0.00211
Sonnet 5	$0.00003	$0.00084
Haiku 4.5	$0.00002	$0.00042

Measured 10d ago against content hash b66b70893385, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

sync-skills 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 10d 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.

.claude/skills/sync-skills/SKILL.md · 42 lines

What it actually says

Sync Skills

Cross-reference the two main skills against core guides to find inconsistencies.

Steps

Read source of truth:
- skill/SKILL.md Section 4 (Config Reference) — canonical config formats
- core/hooks-guide.md — hook events, matcher syntax, environment variables
- core/settings-reference.md — settings structure, permission patterns
- core/skills-guide.md — skill frontmatter format, allowed-tools syntax
- core/mcp-guide.md — MCP server config format
Read skills to check:
- skill/SKILL.md — the /setup skill (full file)
- .claude/skills/bootstrap/SKILL.md — the /bootstrap skill (full file)
Cross-reference config formats:
- Compare every JSON template in bootstrap against the canonical format in setup Section 4
- Check hook event names match core/hooks-guide.md
- Check settings keys match core/settings-reference.md
- Check skill frontmatter fields match core/skills-guide.md
- Check MCP config structure matches core/mcp-guide.md
Cross-reference content claims:
- Check that feature lists in setup audit checks align with what bootstrap actually generates
- Check that any "best practice" advice in one skill doesn't contradict the other
Report discrepancies:
- For each issue, show: file, line number, what's inconsistent, and the correct value from the source of truth
- Group by severity: MISMATCH (wrong value) vs STALE (outdated but not wrong) vs MISSING (should be present)
- If no issues found, report: "Skills are in sync with core guides."

Changes

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.

10d ago First seen · 42 lines · 16 tokens per session scan A b66b70893385

Subscribe to this mod's changes

sync-skills is a skill published in the GitHub repository paulo-yamagishi/claude-code-setup (2 stars, last pushed 7mo ago), licensed MIT. It adds 16 tokens to every session and 421 once invoked, about $0.0001 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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