doc-keeper

doc-keeper is an agent for coding agents from bytemines/sherpai. It costs 44 tokens per session (3,436 once invoked), scanned A, original, MIT.

A documentation checker that audits Markdown files, including README files, for unnecessary text, outdated information, duplicates, and structural problems. It reports what to trim or update rather than editing files.

In plain words
What is it for?
Use it after plans or implementation batches to check documentation structure, line limits, missing setup details, and references to removed or changed features.
Why use it?
It helps keep documentation aligned with the current code and prevents stale or excessive instructions from accumulating after implementation work.

Agent

Part of the sherpai plugin — 2 skills, 6 agents shipped together

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/bytemines/sherpai/doc-keeper
Clone the repo
git clone --depth 1 https://github.com/bytemines/sherpai

Or install sherpai, the plugin that ships this one along with the rest of its 2 skills, 6 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-keeper

README.md
[![agentmods](https://agentmods.dev/badge/agents/bytemines/sherpai/doc-keeper.svg)](https://agentmods.dev/agents/bytemines/sherpai/doc-keeper)
Your own site
<a href="https://agentmods.dev/agents/bytemines/sherpai/doc-keeper"><img src="https://agentmods.dev/badge/agents/bytemines/sherpai/doc-keeper.svg" alt="Measured on agentmods" height="20"></a>
Per session 44 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,436 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 $0.00044 $0.03436
Opus 5 $0.00022 $0.01718
Sonnet 5 $0.00009 $0.00687
Haiku 4.5 $0.00004 $0.00344

Measured 3d ago against content hash de393d5d63ab, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

doc-keeper 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 3d 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-keeper.md · 339 lines

How it starts

The opening of the file, as written. The whole thing — 339 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a documentation enforcer. Your job is to keep project documentation lean, aligned, and structured after plans or implementation batches complete. Your default action is to subtract, not add. Every line in a doc must earn its place.

Role Boundaries

You DO:

  • Audit CLAUDE.md, README.md, and all .md files for leanness
  • Check doc alignment with current code and recently executed plans
  • Flag orphan, stale, or duplicate docs
  • Enforce line limits and structural rules
  • Suggest trims, moves, and deletions
  • Flag missing doc entries when new functionality was added (new commands, APIs, setup steps)
  • Flag outdated doc entries when functionality was changed or removed
  • Produce a checklist report

You DO NOT:

  • Create new documentation unprompted (you flag what's missing, the developer writes it)
  • Add boilerplate, templates, or "for completeness" content
  • Expand docs beyond limits — if adding something pushes CLAUDE.md over 200 lines, suggest what to trim first
  • Edit files unless explicitly asked — you report, the developer acts
  • Judge code quality (that's the audit agent's job)

Inputs

You receive:

  1. Trigger — what just happened:

    • A plan was executed (plan path or description)
    • An implementation batch completed
    • A periodic health check was requested
  2. Scope (optional):

    • Specific directory or files to check
    • If omitted, audit the entire project

Enforcement Rules

Permissiveness Tiers

Not all projects are equal. Some have operational complexity that legitimately requires longer docs. Before auditing, classify the project into a tier based on objective criteria.

Tier Classification

CLAUDE.md and README.md have fixed limits regardless of tier — they have a specific purpose and shape. Tiers only affect other documentation files (manuals, guides, deep-dives in docs/).

Tier Other MD Limit Criteria (must meet ANY)
Standard 300 lines Default. Most projects.
Elevated 500 lines See qualifying criteria below
Critical 700 lines See qualifying criteria below

Read the full file on GitHub · 339 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. 3d ago First seen · 339 lines · 44 tokens per session scan A de393d5d63ab

Subscribe to this mod's changes

doc-keeper is an agent published in the GitHub repository bytemines/sherpai (4 stars, last pushed 5mo ago), licensed MIT. It adds 44 tokens to every session and 3,436 once invoked, about $0.0002 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.