documentation-standards

documentation-standards is a skill for Claude Code, Codex from MatrixFounder/Agentic-development. It costs 17 tokens per session (7,834 once invoked), scanned A, original, Apache-2.0.

A set of rules for writing code comments, docstrings, documentation, and project files. It emphasizes explaining why code works, keeping documents easy to scan, and maintaining required project artifacts.

In plain words
What is it for?
Use it when adding comments or docstrings, updating project guidance, structuring prose, or reviewing documentation quality and line lengths.
Why use it?
It prevents missing explanations, unreadable long sections, and documentation changes that are difficult to review.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument; mentions AGENTS.md.

Good fit Use it when adding comments or docstrings, updating project guidance, structuring prose, or reviewing documentation quality and line lengths.

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Install with agentmods
npx agentmods add skills/matrixfounder/agentic-development/documentation-standards
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 MatrixFounder/Agentic-development --skill documentation-standards
Clone the repo
git clone --depth 1 https://github.com/MatrixFounder/Agentic-development

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-standards

README.md
[![agentmods](https://agentmods.dev/badge/skills/matrixfounder/agentic-development/documentation-standards/github.svg)](https://agentmods.dev/skills/matrixfounder/agentic-development/documentation-standards)
Your own site
<a href="https://agentmods.dev/skills/matrixfounder/agentic-development/documentation-standards"><img src="https://agentmods.dev/badge/skills/matrixfounder/agentic-development/documentation-standards/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 documentation-standards

Your own site · 80×15
<a href="https://agentmods.dev/skills/matrixfounder/agentic-development/documentation-standards"><img src="https://agentmods.dev/badge/skills/matrixfounder/agentic-development/documentation-standards.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,834 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 high

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 →

  • high Prompt Injection · line 233
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
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 $0.00017 $0.07834
Opus 5.5 $0.00007 $0.03134
Sonnet 5.5 $0.00003 $0.01567
Haiku 4.5 $0.00002 $0.00783

Measured 13d ago against content hash f35572e7e913, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

documentation-standards 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 13d ago.

The scan reads SKILL.md. This mod also ships 7 executable files (assets/templates/jsdoc_template.ts, assets/templates/python_docstring.py, examples/good_documentation.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.agent/skills/documentation-standards/SKILL.md · 529 lines

How it starts

The opening of the file, as written. The whole thing — 529 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Documentation Standards

Purpose: Defines the non-negotiable standards for code comments, docstrings, and global artifacts.

1. Red Flags (Anti-Rationalization)

STOP if you are thinking:

  • "I'll add comments later" -> WRONG. Undocumented code is technical debt from the moment it is written.
  • "The code is self-documenting" -> WRONG. Code explains how; comments explain why.
  • "Artifacts are optional, I can skip them entirely" -> WRONG. Artifacts are part of delivery quality; .AGENTS.md must follow project memory policy.
  • "I'll put the full explanation in the table cell" -> WRONG. A table is a scanning device. Prose inside a cell destroys scanning and makes every row of that table churn on any edit. Cell = label; explanation goes below the table.
  • "It's all one topic, so it's one paragraph" -> WRONG. Topic is not structure. A reader needs entry points: paragraphs, lists, headings. A 30-line block has none.
  • "Line length doesn't matter, editors soft-wrap" -> WRONG. git diff and review comments are line-granular. A 2000-character line means a one-word fix shows up as a whole-paragraph rewrite, and reviewers stop reading.

2. Docstrings & JSDoc

All classes and functions MUST have documentation.

Python

Use Google-style docstrings.

[!TIP] See assets/templates/python_docstring.py for the format.

JavaScript / TypeScript

Use JSDoc standards.

[!TIP] See assets/templates/jsdoc_template.ts for the format.

3. Comments

  • Why vs What: Explain the reason for logic, not the syntax.
  • Work Tracking: Use # T O D O: (Python) or // T O D O: (JS/TS) for future work.

4. Path & Reference Standards (CRITICAL)

  • Relative Paths Only: When linking to internal files in Artifacts (PLAN.md, TASK.md), ALWAYS use relative paths.
    • ✅ [Ref](src/main.py)
    • ✅ [.agent/skills/core.md](.agent/skills/core.md)
    • ❌ file:///Users/username/project/src/main.py
    • ❌ /Absolute/System/Path

Read the full file on GitHub · 529 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. 13d ago Changed · +52 lines f35572e7e913
  2. 1mo ago First seen · 477 lines · 17 tokens per session scan A 2ec1ea8be47d

Subscribe to this mod's changes

documentation-standards is a skill published in the GitHub repository MatrixFounder/Agentic-development (6 stars, last pushed yesterday), licensed Apache-2.0. It adds 17 tokens to every session and 7,834 once invoked, about $0.0001 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.