What is markdown-fix?

A formatting and linting workflow for Markdown files, which are plain-text documents with headings, lists, and code blocks. It standardizes formatting and fixes markdownlint warnings.

Use it after editing one or more Markdown files to auto-fix style issues, resolve remaining warnings, and verify the result.

It removes avoidable formatting problems so documents are easier to review and process consistently.

markdown-fix — Skill for Claude Code and Codex by eaglesakura

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 eaglesakura/agent-skills --skill markdown-fix

Clone the repo

git clone --depth 1 https://github.com/eaglesakura/agent-skills

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/eaglesakura/agent-skills/markdown-fix/github.svg)](https://agentmods.dev/skills/eaglesakura/agent-skills/markdown-fix)

Your own site

<a href="https://agentmods.dev/skills/eaglesakura/agent-skills/markdown-fix"><img src="https://agentmods.dev/badge/skills/eaglesakura/agent-skills/markdown-fix/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/eaglesakura/agent-skills/markdown-fix"><img src="https://agentmods.dev/badge/skills/eaglesakura/agent-skills/markdown-fix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 516 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00116	$0.00516
Opus 5.5	$0.00046	$0.00206
Sonnet 5.5	$0.00023	$0.00103
Haiku 4.5	$0.00012	$0.00052

Measured 2mo ago against content hash 412e79f63739, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

markdown-fix 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 2mo 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.

packages/agentic-workspace/.apm/skills/markdown-fix/SKILL.md · 52 lines

What it actually says

Markdown / Fix Lint, Fix Format

書式が揃っていると markdown-search の見出し抽出やレビュー差分が安定する。内容の設計は別 SKILL に任せ、ここでは lint / format に集中する。

いつ使うか

*.md 作成・更新の直後
「整形」「lint」「フォーマット」依頼
ディレクトリ配下の Markdown をまとめて直すとき

入力

対象ファイル、またはディレクトリ（配下のすべての *.md）

find "path/to/directory/" -name "*.md"

手順

基本ツールは npx markdownlint-cli2。コマンド実行時は、プロジェクト規定のツールチェイン（あれば）に従う。

ステップ1. 自動修正

npx markdownlint-cli2 --fix path/to/markdown_file.md

複数ファイル・ディレクトリも同様にパスを渡す。

ステップ2. 残件の手修正

--fix で消えない警告はメッセージを読み、個別に直す
技術文書の見出しルール（重複見出し・言語タグ等）は markdown-documentation の lint リファレンスを参照してよい

ステップ3. 再実行

手修正後にもう一度ステップ1を実行し、警告ゼロを目指す

Files

What ships with it

1 file 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.

evals/evals.json 1.7 KB

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.

2mo ago First seen · 52 lines · 116 tokens per session scan A 412e79f63739

Subscribe to this mod's changes

markdown-fix is a skill published in the GitHub repository eaglesakura/agent-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 116 tokens to every session and 516 once invoked, about $0.0005 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 2026-09-04.

Writing and docs

markdown-fix next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
markdown-fixeaglesakura/agent-skills	Skill	2	1mo ago	MIT	A	116	Claude Code, Codex
imagegenopenai/codex	Skill	134k	today	Apache-2.0	A	113	Codex
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	today	MIT	A	200	Claude Code, Codex
playwright-climicrosoft/playwright	Skill	99k	today	Apache-2.0	A	19	Claude Code
systematic-debuggingobra/superpowers	Skill	314k	4d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	today	MIT	A	95	Claude Code
chat-pet-sprite-creationmicrosoft/vscode	Skill	195k	today	MIT	A	53	Claude Code, Codex