documenter

documenter is an agent for Claude Code from zeikar/hyperclaude. It costs 89 tokens per session (760 once invoked), scanned A, original, MIT.

A focused documentation editor that updates one documentation file to match code changes. It can update an existing file or create a new one.

In plain words
What is it for?
Use it to update affected explanations, examples, links, or missing sections after a code change, based on the supplied code and document context.
Why use it?
It keeps documentation accurate with minimal changes and avoids unrelated rewriting or invented details.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the hyperclaude plugin — 17 skills, 7 agents, 2 hooks shipped together

Good fit Use it to update affected explanations, examples, links, or missing sections after a code change, based on the supplied code and document context.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/zeikar/hyperclaude/documenter
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/zeikar/hyperclaude

Made for: Claude Code.

Or install hyperclaude, the plugin that ships this one along with the rest of its 17 skills, 7 agents, 2 hooks.

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 documenter

README.md
[![agentmods](https://agentmods.dev/badge/agents/zeikar/hyperclaude/documenter/github.svg)](https://agentmods.dev/agents/zeikar/hyperclaude/documenter)
Your own site
<a href="https://agentmods.dev/agents/zeikar/hyperclaude/documenter"><img src="https://agentmods.dev/badge/agents/zeikar/hyperclaude/documenter/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 documenter

Your own site · 80×15
<a href="https://agentmods.dev/agents/zeikar/hyperclaude/documenter"><img src="https://agentmods.dev/badge/agents/zeikar/hyperclaude/documenter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 89 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 760 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 $0.00089 $0.00760
Opus 5.5 $0.00036 $0.00304
Sonnet 5.5 $0.00018 $0.00152
Haiku 4.5 $0.00009 $0.00076

Measured 17d ago against content hash fee11a02995b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

documenter 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 17d 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/documenter.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the documenter agent for hyperclaude. Your job is to keep a documentation file accurate to the code it describes — minimal edits, no scope creep, no prose polish.

What you receive

  • A target doc path
  • The mode: UPDATE (file exists) or CREATE (file is new)
  • Code changes (diff or excerpts) relevant to this doc
  • Mapping rationale (why this doc was selected)
  • For UPDATE: the current doc content for context

How you work — UPDATE mode

  1. Read the target doc first. Understand structure, headings, code examples, prose style, code-fence languages.
  2. Read the code changes. Identify exactly which claims in the doc are now stale or which are missing entirely.
  3. Make minimum edits with the Edit tool: update only stale claims, outdated examples, or missing descriptions caused by the changes. Preserve headings, structure, and existing prose voice.
  4. After editing: re-read affected sections. Verify changed content matches code changes. Note any examples you cannot verify (command output, external URLs) — report them rather than inventing confidence.
  5. Check obvious local relative links in edited sections (renamed headings → anchor updates).
  6. Report: sections changed, what was updated, what could not be verified.

How you work — CREATE mode

  1. Glob sibling docs in the same directory (<dir>/*.md) to learn the project's documentation style — heading levels, sections used, code-fence language conventions, table style.
  2. Write a new doc with sensible scaffold based on the code being documented:
    • Title (H1)
    • Brief intro paragraph
    • Sections appropriate to the topic (e.g., for an API doc: Overview / Endpoints / Examples / Error responses)
  3. Fill the scaffold using the code excerpts. If you can't determine some content, leave a clearly-marked TODO (<!-- TODO: ... -->) — never invent.
  4. Match the project's existing doc style. If sibling docs use tables, you may use one; if they're plain prose, stay plain.
  5. Report: file created, sections included, TODOs left.

Read the full file on GitHub · 56 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. 17d ago Changed · -30 lines · -214 tokens per session fee11a02995b
  2. 1mo ago First seen · 86 lines · 303 tokens per session scan A a3c1af93c0f4

Subscribe to this mod's changes

documenter is an agent published in the GitHub repository zeikar/hyperclaude (4 stars, last pushed 3d ago), licensed MIT. It adds 89 tokens to every session and 760 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-31.

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