documentation-sync

A checklist for updating documentation after significant code changes. It compares changes such as API, command, configuration, dependency, and architecture updates with the documentation they may affect.

In plain words
What is it for?
Use it after adding or changing endpoints, CLI options, environment variables, packages, major modules, or features to find and update stale documentation.
Why use it?
It helps prevent README files, setup instructions, configuration examples, API references, and architecture notes from becoming inaccurate.

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/omergocmen/vibe-coder-kit/documentation-sync
Any agent
npx skills add omergocmen/vibe-coder-kit --skill documentation-sync
Clone the repo
git clone --depth 1 https://github.com/omergocmen/vibe-coder-kit

Made for: Claude Code, Codex.

Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,169 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 $0.00046 $0.01169
Opus 5 $0.00023 $0.00584
Sonnet 5 $0.00009 $0.00234
Haiku 4.5 $0.00005 $0.00117

Measured 2d ago against content hash e9d063cd98a8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

documentation-sync 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.

.agent/skills/documentation-sync/SKILL.md · 169 lines

How it starts

The opening of the file, as written. The whole thing — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Documentation Sync Skill

When to Trigger

Run after:

  • A public API endpoint is added, changed, or removed
  • A CLI command or flag is modified
  • A new environment variable or config key is introduced
  • A major component or module is refactored
  • A new npm/pip/etc. package is added or removed from dependencies
  • Any README.md reference becomes inaccurate

Step-by-Step Process

1. Identify What Changed

Review the git diff of the work just completed:

git diff main --name-only          # Files changed vs main
git diff HEAD~1 --name-only        # Files changed in last commit

Categorize changes:

  • API changes → affects docs/api/, OpenAPI/Swagger specs, README.md
  • Config changes → affects .env.example, docs/configuration.md
  • Dependency changes → affects README.md (setup section), docs/getting-started.md
  • Architecture changes → affects docs/architecture.md, diagrams
  • New features → affects docs/features/, changelogs

2. Audit Existing Docs

For each affected category, check whether corresponding docs exist:

docs/
  api/             ← REST/GraphQL endpoint docs
  architecture.md  ← System design, component diagram
  configuration.md ← All env vars and config options
  getting-started.md ← Local setup guide
  features/        ← Per-feature descriptions
CHANGELOG.md       ← Version history
README.md          ← Project overview + quickstart

For each doc file that touches the changed area, read it and flag stale sections.

Read the full file on GitHub · 169 lines

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 · 169 lines · 46 tokens per session scan A e9d063cd98a8

Subscribe to this mod's changes

documentation-sync is a skill published in the GitHub repository omergocmen/vibe-coder-kit (91 stars, last pushed 2mo ago), licensed MIT. It adds 46 tokens to every session and 1,169 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 2026-08-30.

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