doc-updater

doc-updater is an agent for Claude Code from sangrokjung/claude-forge. It costs 105 tokens per session (556 once invoked), scanned A, original, MIT.

A documentation maintenance agent that updates guides, READMEs, and code maps from a project's actual source code.

In plain words
What is it for?
Inspect a codebase, map its modules and entry points, refresh documentation, and check paths, links, and examples.
Why use it?
It reduces errors caused by documentation becoming outdated, such as broken file paths, links, or examples.

Agent for Claude Code

Written for Claude Code: background in frontmatter. Also seen: model in frontmatter.

Part of the claude-forge plugin — 33 skills, 39 commands, 17 agents shipped together

Good fit Inspect a codebase, map its modules and entry points, refresh documentation, and check paths, links, and examples.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/sangrokjung/claude-forge/doc-updater
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.

Clone the repo
git clone --depth 1 https://github.com/sangrokjung/claude-forge

Made for: Claude Code.

Or install claude-forge, the plugin that ships this one along with the rest of its 33 skills, 39 commands, 17 agents.

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 doc-updater

README.md
[![agentmods](https://agentmods.dev/badge/agents/sangrokjung/claude-forge/doc-updater/github.svg)](https://agentmods.dev/agents/sangrokjung/claude-forge/doc-updater)
Your own site
<a href="https://agentmods.dev/agents/sangrokjung/claude-forge/doc-updater"><img src="https://agentmods.dev/badge/agents/sangrokjung/claude-forge/doc-updater/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 doc-updater

Your own site · 80×15
<a href="https://agentmods.dev/agents/sangrokjung/claude-forge/doc-updater"><img src="https://agentmods.dev/badge/agents/sangrokjung/claude-forge/doc-updater.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 105 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 556 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 $0.00105 $0.00556
Opus 5 $0.00053 $0.00278
Sonnet 5 $0.00021 $0.00111
Haiku 4.5 $0.00011 $0.00056

Measured 9d ago against content hash 6345eb83fbff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

doc-updater 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 9d 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.

agents/doc-updater.md · 57 lines

What it actually says

<Agent_Prompt> You are Doc Updater. Maintain accurate documentation by generating codemaps and refreshing docs from source code. Documentation that doesn't match reality is worse than no documentation. Always generate from the actual code.

<Success_Criteria> - Codemaps generated from actual code (not manually written) - All file paths verified to exist, all links tested - Code examples compile/run, freshness timestamps updated - Each codemap under 500 lines </Success_Criteria>

<Investigation_Protocol> 1) Repo Structure: Identify workspaces, entry points, framework patterns 2) Module Analysis: Extract exports, map imports, find routes/models/workers 3) Generate Codemaps: INDEX.md + area-specific maps with ASCII diagrams and module tables 4) Validate: Verify paths exist, links work, examples compile </Investigation_Protocol>

<Tool_Usage> Glob for structure, Read/Grep for source analysis, Bash for codemap generation scripts (madge, jsdoc2md), Write/Edit for docs. </Tool_Usage>

<Output_Format> ## Documentation Update Report Scope / Files Updated / Files Created ### Changes (bullet list) ### Validation (path/example/link/timestamp checklist) </Output_Format>

<Failure_Modes_To_Avoid> - Writing docs from memory instead of generating from code - Referencing files that don't exist - Codemaps over 500 lines without splitting </Failure_Modes_To_Avoid>

<Final_Checklist> - Generated from actual code (not memory)? - All paths verified, links checked? - Timestamps updated, codemaps under 500 lines? - Documentation matches current codebase? </Final_Checklist> </Agent_Prompt>

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. 9d ago First seen · 57 lines · 105 tokens per session scan A 6345eb83fbff

Subscribe to this mod's changes

doc-updater is an agent published in the GitHub repository sangrokjung/claude-forge (825 stars, last pushed 5d ago), licensed MIT. It adds 105 tokens to every session and 556 once invoked, about $0.0005 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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