sync-docs

A documentation-maintenance skill that compares project instructions and architecture documents with the current code.

In plain words
What is it for?
Use it to audit and update CLAUDE.md files, architecture documentation, module guidance, architecture decisions, and operational runbooks.
Why use it?
It helps prevent developer documentation from becoming outdated, duplicated, vague, or disconnected from the codebase.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/whchoi98/project-init/sync-docs
Any agent
npx skills add whchoi98/project-init --skill sync-docs
Clone the repo
git clone --depth 1 https://github.com/whchoi98/project-init

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 339 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00339
Opus 5 $0.00000 $0.00169
Sonnet 5 $0.00000 $0.00068
Haiku 4.5 $0.00000 $0.00034

Measured 2d ago against content hash 66e6f4e730c3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sync-docs 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 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.

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-docs/SKILL.md · 49 lines

What it actually says

Sync Docs Skill

Synchronize project documentation with current code state.

Actions

1. Quality Assessment

Score each CLAUDE.md file (0-100) across:

  • Commands/workflows (20 pts)
  • Architecture clarity (20 pts)
  • Non-obvious patterns (15 pts)
  • Conciseness (15 pts)
  • Currency (15 pts)
  • Actionability (15 pts)

Apply anti-pattern deductions:

  • Over 500 lines (-15)
  • Vague instructions (-10)
  • Duplicated docs (-10)
  • No test guidance (-10)
  • Contains secrets (-20)

Output quality report with grades (A-F) before making changes.

2. Root CLAUDE.md Sync

  • Update Overview, Tech Stack, Conventions, Key Commands
  • Verify commands are copy-paste ready against actual scripts

3. Architecture Doc Sync

  • Update docs/architecture.md to reflect current system structure
  • Add new components, update data flows, reflect infrastructure changes

4. Module CLAUDE.md Audit

  • Scan all directories under plugins/
  • Create CLAUDE.md for modules missing one
  • Update existing module CLAUDE.md files if out of date
  • Score each module CLAUDE.md

5. ADR and Runbook Audit

  • Check recent commits for undocumented architectural decisions
  • Verify runbook coverage against project characteristics
  • Flag stale ADRs and outdated runbooks

6. README.md Sync

  • Update project structure section to match actual directory layout

7. Report

Output before/after quality scores, anti-patterns detected, and list of all changes.

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.

  1. 2d ago First seen · 49 lines · 0 tokens per session scan A 66e6f4e730c3

Subscribe to this mod's changes

sync-docs is a skill published in the GitHub repository whchoi98/project-init (2 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 339 tokens. 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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