md-format

md-format is a skill for Claude Code, Codex from klh/speedy-claude. It costs 57 tokens per session (596 once invoked), scanned A, original, MIT.

A style guide for writing and reviewing Markdown files, such as READMEs, documentation, and pull-request descriptions. It explains GitHub-compatible formatting choices that automatic formatting cannot decide.

In plain words
What is it for?
Use it when creating or reviewing Markdown documentation, especially files intended for GitHub.
Why use it?
It helps documents render consistently and remain easy to read and maintain. It also clarifies when lists, tables, headings, and code blocks are appropriate.

Skill for Claude CodeCodex

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

Good fit Use it when creating or reviewing Markdown documentation, especially files intended for GitHub.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/klh/speedy-claude/md-format
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 klh/speedy-claude --skill md-format
Clone the repo
git clone --depth 1 https://github.com/klh/speedy-claude

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 md-format

README.md
[![agentmods](https://agentmods.dev/badge/skills/klh/speedy-claude/md-format/github.svg)](https://agentmods.dev/skills/klh/speedy-claude/md-format)
Your own site
<a href="https://agentmods.dev/skills/klh/speedy-claude/md-format"><img src="https://agentmods.dev/badge/skills/klh/speedy-claude/md-format/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 md-format

Your own site · 80×15
<a href="https://agentmods.dev/skills/klh/speedy-claude/md-format"><img src="https://agentmods.dev/badge/skills/klh/speedy-claude/md-format.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 596 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 pass 7 Sept 2026
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 $0.00057 $0.00596
Opus 5 $0.00028 $0.00298
Sonnet 5 $0.00011 $0.00119
Haiku 4.5 $0.00006 $0.00060

Measured 8d ago against content hash dd2f034df7ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

md-format 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 8d 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.

skills/md-format/SKILL.md · 32 lines

How it starts

The opening of the file, as written. The whole thing — 32 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Markdown Style (GFM-first)

Mechanical formatting is handled automatically: every Write/Edit to a .md file triggers hooks/md-format.shprettier --write --prose-wrap preserve. That aligns table pipes, normalizes list markers (- for bullets, 1. ordered), code-fence style, and spacing. You write; the hook tidies.

Manual format (unformatted files, bulk):

prettier --write --prose-wrap preserve "docs/**/*.md"

Judgment calls (prettier can't decide these)

  • GFM is the default target: tables, task lists, strikethrough, autolinks, fenced code with language tags. Write for GitHub rendering.
  • Tables: only when the data is genuinely tabular (2+ columns, comparable rows). One-liner pairs → a list. Wide tables (5+ cols) often read better as definition lists or headed sections — GitHub doesn't wrap table cells.
  • Column width: keep header cells short; long cells in a column mean the table fights the formatter's alignment.
  • Code fences: always tag the language in the fence info string (bash, ts). Untagged blocks lose highlighting.
  • Headings: one H1 per file, no level skips (H1→H3 is broken anchoring). Headings are the anchor API — #-Pattern links depend on exact casing.
  • Lists: - bullets; parallel capitalization; no trailing . on fragments, . on full sentences — pick one per list.
  • Emphasis: *italic*, **bold**; underscores read as code in some renderers around words.
  • Line breaks: single newline within a paragraph (GFM renders it as a space — don't rely on hard-wraps); blank line between blocks. Two trailing spaces for intentional <br> — rare.
  • Flavor exceptions: Obsidian-targeted notes may use wikilinks/callouts; plain CommonMark when a renderer is unknown. Match the repo's existing flavor before defaulting to GFM.
  • Links: reference-style for repeated URLs or >3 links in a paragraph; inline otherwise. Naked URLs fine (GFM autolinks).

Verification

After bulk-formatting or flavor migrations: prettier --check for strays, and render-check tables (column count consistent per row — the formatter will not fix a table with mismatched cells, it will happily align a broken one).

Read the full file on GitHub · 32 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. 8d ago First seen · 32 lines · 57 tokens per session scan A dd2f034df7ea

Subscribe to this mod's changes

md-format is a skill published in the GitHub repository klh/speedy-claude (11 stars, last pushed 2d ago), licensed MIT. It adds 57 tokens to every session and 596 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 2026-09-04.

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