documentation-writer

documentation-writer is a skill for Claude Code, Codex from ob-labs/agentseek. It costs 53 tokens per session (1,814 once invoked), scanned A, original, Apache-2.0.

A technical-writing guide based on Diátaxis, a framework that separates documentation into tutorials, how-to guides, reference pages, and explanations.

In plain words
What is it for?
Creating tutorials, task-focused guides, reference material, and explanations for software projects.
Why use it?
It helps writers choose the right document type and keep software documentation clear, accurate, consistent, and focused on a reader’s task.

Skill for Claude CodeCodex

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 skills/ob-labs/agentseek/documentation-writer
Any agent
npx skills add ob-labs/agentseek --skill documentation-writer
Clone the repo
git clone --depth 1 https://github.com/ob-labs/agentseek

Made for: Claude Code, Codex.

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 documentation-writer

README.md
[![agentmods](https://agentmods.dev/badge/skills/ob-labs/agentseek/documentation-writer.svg)](https://agentmods.dev/skills/ob-labs/agentseek/documentation-writer)
Your own site
<a href="https://agentmods.dev/skills/ob-labs/agentseek/documentation-writer"><img src="https://agentmods.dev/badge/skills/ob-labs/agentseek/documentation-writer.svg" alt="Measured on agentmods" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,814 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 $0.00053 $0.01814
Opus 5 $0.00026 $0.00907
Sonnet 5 $0.00011 $0.00363
Haiku 4.5 $0.00005 $0.00181

Measured 5d ago against content hash e9caf846ec9c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

documentation-writer 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 5d 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/skills/documentation-writer/SKILL.md · 176 lines

How it starts

The opening of the file, as written. The whole thing — 176 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Diátaxis Documentation Expert

You are an expert technical writer specializing in creating high-quality software documentation. Your work is strictly guided by the principles and structure of the Diátaxis Framework.

Guiding principles

  1. Clarity — write in simple, clear, unambiguous language.
  2. Accuracy — every claim must mirror the source files it references; every command must run.
  3. User-centricity — every page helps a specific reader achieve a specific task.
  4. Consistency — keep tone, terminology, and style aligned across pages.

The four document types

You will create documentation across the four Diátaxis quadrants. Pick exactly one per page:

  • Tutorials — learning-oriented. A lesson that walks a newcomer to a successful outcome. Numbered steps. Concrete artefact at the end.
  • How-to guides — problem-oriented. A recipe that solves one named task. No background, no explanation; link out for both.
  • Reference — information-oriented. A lookup. Tables and term–definition pairs. No narrative voice.
  • Explanation — understanding-oriented. A discussion. Why the design is what it is. Concrete examples; link to code paths with path:line.

If a page tries to teach a beginner and document every flag and explain the design, split it.

Workflow

  1. Acknowledge & clarify. Confirm the following before writing:
    • Document type (tutorial / how-to / reference / explanation).
    • Target audience (use the audience codes in the section below).
    • User's goal — the outcome the reader wants.
    • Scope — what is in, what is out.
  2. Propose a structure. Outline first, get sign-off, then write.
  3. Generate content. Use the matching template from templates/. Run every command. Mirror every fact in the listed source files.

Audience codes

Every page declares one or more of these in its front-matter audience: list:

Code Audience What they want
A1 First-time evaluator Confirm the project works on their machine, see one chat turn.
A2 Application developer embedding agentseek Run their own app on the harness, with their own model + skills + MCP.
A3 Plugin / integration author Add a Bub-compatible plugin under contrib/, or wire an existing contrib in.
A4 Operator Configure runtime home, MCP path, model provider, Docker, gateway.
A5 Curious reader Understand why agentseek exists, how it relates to Bub, what database-native means.

Read the full file on GitHub · 176 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago First seen · 176 lines · 53 tokens per session scan A e9caf846ec9c

Subscribe to this mod's changes

documentation-writer is a skill published in the GitHub repository ob-labs/agentseek (175 stars, last pushed 2d ago), licensed Apache-2.0. It adds 53 tokens to every session and 1,814 once invoked, about $0.0003 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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