update-docs

update-docs is a skill for Claude Code, Codex from tmj-90/gaffer. It costs 64 tokens per session (406 once invoked), scanned A, original, Apache-2.0.

A guide for updating project documentation so it accurately matches code changes. It covers finding affected documents, correcting examples, and checking that documented commands work.

In plain words
What is it for?
Updating documentation for routes, configuration keys, command-line options, schemas, and other changed behaviour.
Why use it?
It prevents README files, API references, changelogs, and runbooks from becoming misleading after the code changes.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Updating documentation for routes, configuration keys, command-line options, schemas, and other changed behaviour.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tmj-90/gaffer/update-docs
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 tmj-90/gaffer --skill update-docs
Clone the repo
git clone --depth 1 https://github.com/tmj-90/gaffer

Made for: Claude Code, Codex.

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.

agentmods badge for update-docs

README.md
[![agentmods](https://agentmods.dev/badge/skills/tmj-90/gaffer/update-docs/github.svg)](https://agentmods.dev/skills/tmj-90/gaffer/update-docs)
Your own site
<a href="https://agentmods.dev/skills/tmj-90/gaffer/update-docs"><img src="https://agentmods.dev/badge/skills/tmj-90/gaffer/update-docs/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.

agentmods 80×15 button for update-docs

Your own site · 80×15
<a href="https://agentmods.dev/skills/tmj-90/gaffer/update-docs"><img src="https://agentmods.dev/badge/skills/tmj-90/gaffer/update-docs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 406 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00064 $0.00406
Opus 5 $0.00032 $0.00203
Sonnet 5 $0.00013 $0.00081
Haiku 4.5 $0.00006 $0.00041

Measured 7d ago against content hash 66afa62c6ab8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 7d 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.

runner/skills/update-docs/SKILL.md · 34 lines

What it actually says

Update the docs

Bring documentation back in line with the code. Keep it accurate and matched to the repo's existing docs structure — don't spawn a parallel doc system.

Steps

  1. Find the source of truth and the docs that reference it. Identify what changed (a route, a config key, a CLI flag, a schema) and locate every doc that describes it: README, docs/, API reference, changelog, inline examples.
  2. Read the lore if the change touches a convention — search_lore (Memory MCP) for docs/style conventions (changelog format, where API docs live, voice).
  3. Update only what the change affects. Correct commands, signatures, payloads, and examples so they match the code exactly. Add a changelog entry in the repo's format if one exists. Don't rewrite unrelated sections.
  4. Verify the examples are real — run any documented command or sample request and confirm it produces what the doc claims. Fix drift you find.
  5. Evidence: the changed doc files and (where applicable) the command output proving an example works. Then use the record-evidence skill (diff_summary) and submit for review.

Rules

  • Docs must match the code exactly; verify commands and examples actually run.
  • Edit existing docs in place; don't introduce a new docs framework or location.
  • Keep scope tight — only the sections the change touches.
  • Run on a branch (the create-branch skill), never a protected branch.
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. 7d ago First seen · 34 lines · 64 tokens per session scan A 66afa62c6ab8

Subscribe to this mod's changes

update-docs is a skill published in the GitHub repository tmj-90/gaffer (2 stars, last pushed 3d ago), licensed Apache-2.0. It adds 64 tokens to every session and 406 once invoked, about $0.0003 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 2026-09-03.

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