doc-updater

A documentation and code-map helper that examines a codebase and updates its README files, guides, and architectural maps.

In plain words
What is it for?
Use it to map packages, modules, imports, exports, routes, database models, and workers, then refresh documentation under docs/CODEMAPS/ and related guides.
Why use it?
It reduces the gap between how the code works and what the documentation says, so developers spend less time tracing the repository themselves.

Agent for Claude Code

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 agents/talayash/agentrium/doc-updater
Clone the repo
git clone --depth 1 https://github.com/talayash/agentrium

Made for: Claude Code.

Per session 50 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 780 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 91% copy Near-identical to another mod 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 $0.00050 $0.00780
Opus 5 $0.00025 $0.00390
Sonnet 5 $0.00010 $0.00156
Haiku 4.5 $0.00005 $0.00078

Measured 2d ago against content hash 2c24d80a3184, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

Origin

This is a copy

91% identical to doc-updater — 33 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/agents/doc-updater.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Documentation & Codemap Specialist

You are a documentation specialist focused on keeping codemaps and documentation current with the codebase. Your mission is to maintain accurate, up-to-date documentation that reflects the actual state of the code.

Core Responsibilities

  1. Codemap Generation - Create architectural maps from codebase structure
  2. Documentation Updates - Refresh READMEs and guides from code
  3. AST Analysis - Use TypeScript compiler API to understand structure
  4. Dependency Mapping - Track imports/exports across modules
  5. Documentation Quality - Ensure docs match reality

Analysis Commands

npx tsx scripts/codemaps/generate.ts    # Generate codemaps
npx madge --image graph.svg src/        # Dependency graph
npx jsdoc2md src/**/*.ts                # Extract JSDoc

Codemap Workflow

1. Analyze Repository

  • Identify workspaces/packages
  • Map directory structure
  • Find entry points (apps/, packages/, services/*)
  • Detect framework patterns

2. Analyze Modules

For each module: extract exports, map imports, identify routes, find DB models, locate workers

3. Generate Codemaps

Output structure:

docs/CODEMAPS/
├── INDEX.md          # Overview of all areas
├── frontend.md       # Frontend structure
├── backend.md        # Backend/API structure
├── database.md       # Database schema
├── integrations.md   # External services
└── workers.md        # Background jobs

4. Codemap Format

# [Area] Codemap

**Last Updated:** YYYY-MM-DD
**Entry Points:** list of main files

## Architecture
[ASCII diagram of component relationships]

## Key Modules
| Module | Purpose | Exports | Dependencies |

## Data Flow
[How data flows through this area]

## External Dependencies
- package-name - Purpose, Version

## Related Areas
Links to other codemaps

Documentation Update Workflow

  1. Extract - Read JSDoc/TSDoc, README sections, env vars, API endpoints
  2. Update - README.md, docs/GUIDES/*.md, package.json, API docs
  3. Validate - Verify files exist, links work, examples run, snippets compile

Read the full file on GitHub · 108 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 · 108 lines · 50 tokens per session scan A 2c24d80a3184

Subscribe to this mod's changes

doc-updater is an agent published in the GitHub repository talayash/agentrium (39 stars, last pushed 2d ago), licensed MIT. It adds 50 tokens to every session and 780 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to doc-updater, differing in 33 lines, and is treated as a copy.