update-docs

A documentation-maintenance workflow that compares recent code changes with the project’s public documentation.

In plain words
What is it for?
Use it to find relevant changes, map them to documentation pages, and make focused updates while skipping internal-only changes.
Why use it?
It helps prevent user-facing documentation from becoming outdated after features, commands, settings, or behavior change.

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/fabro-sh/fabro/docs
Any agent
npx skills add fabro-sh/fabro --skill docs
Clone the repo
git clone --depth 1 https://github.com/fabro-sh/fabro

Made for: Claude Code, Codex.

Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 578 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 $0.00043 $0.00578
Opus 5 $0.00022 $0.00289
Sonnet 5 $0.00009 $0.00116
Haiku 4.5 $0.00004 $0.00058

Measured 2d ago against content hash 523174189ef5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

update-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/docs/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Update Docs

Detect code changes since the last run and update affected documentation pages.

  • references/mapping.md — code-to-doc page mapping
  • Follow CONTRIBUTING.md and AGENTS.md (repo root) for writing style

Workflow

1. Read watermark

Read .claude/skills/docs/watermark for the last processed commit SHA. If the file is missing (first run), use the commit from 30 days ago as the starting point: git log --before="30 days ago" --format=%H -1 main.

2. Gather changes

Run git log --oneline --no-merges --name-only <watermark>..HEAD to get changed files and commit messages since the watermark.

3. Map changes to doc pages

Cross-reference changed files against the code-to-doc mapping in references/mapping.md. Also use judgment for unmapped files (e.g., new crates or modules that clearly affect user-facing behavior).

Filter to user-facing behavioral changes only:

  • New features, flags, commands, config options, node types
  • Changed behavior, renamed APIs, new integrations
  • Bug fixes that affect documented behavior

Skip:

  • Internal refactors with no behavior change
  • Test-only changes
  • CI/CD pipeline changes
  • Dependency bumps
  • Code style or linting changes

If nothing affects docs, tell the user and stop.

4. Read code and docs

For each affected doc page: read the current MDX file and the relevant source files. Identify sections that are outdated, missing, or incorrect.

5. Update doc pages

Surgical edits only — change only affected sections. Preserve existing voice, structure, heading hierarchy, and Mintlify component usage.

  • Add code examples for new features (CLI commands, config snippets, DOT syntax)
  • Insert rows into reference tables in logical position
  • Add new sections for entirely new capabilities
  • Update existing descriptions when behavior changes
  • Never edit docs/public/api-reference/fabro-api.yaml — that is the API workflow's source of truth

6. Validate DOT examples

If any updated page contains ```dot code blocks with digraph definitions, run ./test/docs/run_tests.sh validate. Fix any failures before proceeding.

Read the full file on GitHub · 66 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 66 lines · 43 tokens per session scan A 523174189ef5

Subscribe to this mod's changes

update-docs is a skill published in the GitHub repository fabro-sh/fabro (1,556 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 578 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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