documenter

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

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/zeikar/hyperclaude/documenter
Clone the repo
git clone --depth 1 https://github.com/zeikar/hyperclaude
Per session 303 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,001 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 $0.00303 $0.01001
Opus 5 $0.00151 $0.00500
Sonnet 5 $0.00061 $0.00200
Haiku 4.5 $0.00030 $0.00100

Measured yesterday against content hash a3c1af93c0f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 yesterday.

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 · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 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 · 86 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. yesterday 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 (3 stars, last pushed 14d ago), licensed MIT. It adds 303 tokens to every session and 1,001 once invoked, about $0.0015 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 2026-08-31.

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