docs-writer

docs-writer is a skill for Claude Code, Codex from jonathan-vella/apex-accelerator. It costs 91 tokens per session (1,525 once invoked), scanned A, original, MIT.

A documentation-maintenance guide for keeping a repository’s user-facing docs, agent files, and changelog accurate and current.

In plain words
What is it for?
Use it to update docs, add documentation for new agents or skills, check for stale content, explain the repository, proofread pages, and create changelog entries.
Why use it?
It helps prevent documentation from becoming outdated or inconsistent with how the repository works.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to update docs, add documentation for new agents or skills, check for stale content, explain the repository, proofread pages, and create changelog entries.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jonathan-vella/apex-accelerator/docs-writer
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.

Any agent
npx skills add jonathan-vella/apex-accelerator --skill docs-writer
Clone the repo
git clone --depth 1 https://github.com/jonathan-vella/apex-accelerator

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 docs-writer

README.md
[![agentmods](https://agentmods.dev/badge/skills/jonathan-vella/apex-accelerator/docs-writer.svg)](https://agentmods.dev/skills/jonathan-vella/apex-accelerator/docs-writer)
Your own site
<a href="https://agentmods.dev/skills/jonathan-vella/apex-accelerator/docs-writer"><img src="https://agentmods.dev/badge/skills/jonathan-vella/apex-accelerator/docs-writer.svg" alt="Measured on agentmods" height="20"></a>
Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,525 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 74
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
How audits are shown
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 $0.00091 $0.01525
Opus 5 $0.00046 $0.00763
Sonnet 5 $0.00018 $0.00305
Haiku 4.5 $0.00009 $0.00153

Measured 4d ago against content hash 34c4d7f11d3a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

docs-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 4d 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.

.github/skills/docs-writer/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

docs-writer

You are an expert technical writer with deep knowledge of the APEX repository. You understand how agents, skills, instructions, templates, and artifacts connect. You maintain all user-facing documentation to be accurate, current, and consistent.

When to Use This Skill

Trigger Phrase Workflow
"Update the docs" Update existing documentation
"Add docs for new agent/skill" Add entity documentation
"Check docs for staleness" Freshness audit with auto-fix
"Explain how this repo works" Architectural Q&A
"Proofread the docs" Language, tone, and accuracy review
"Generate a changelog entry" Changelog from git history

Prerequisites

None — all tools and references are workspace-local.

Scope

In Scope

All markdown documentation except agent-output/**/*.md:

  • site/src/content/docs/ — published user-facing docs (quickstart, workflow, troubleshooting, etc.)
  • tools/tests/exec-plans/tech-debt-tracker.md — tech debt inventory
  • README.md — repo root README
  • CONTRIBUTING.md — contribution guidelines
  • CHANGELOG.md — release history
  • QUALITY_SCORE.md — project health grades
  • .github/instructions/docs.instructions.md — site docs standards

Out of Scope (Has Own Validators)

Path Governed By
agent-output/**/*.md azure-artifacts.instructions.md + validators
.github/agents/*.agent.md agent-authoring.instructions.md
.github/skills/azure-artifacts/templates/ Read-only reference (do not modify)
**/*.bicep iac-bicep-best-practices.instructions.md

Read the full file on GitHub · 116 lines

Files

What ships with it

5 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. 4d ago First seen · 116 lines · 91 tokens per session scan A 34c4d7f11d3a

Subscribe to this mod's changes

docs-writer is a skill published in the GitHub repository jonathan-vella/apex-accelerator (50 stars, last pushed today), licensed MIT. It adds 91 tokens to every session and 1,525 once invoked, about $0.0005 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 2026-09-03.