markdown

markdown is a skill for Claude Code, Codex from JanDeDobbeleer/oh-my-posh. It costs 29 tokens per session (652 once invoked), scanned A, original, MIT.

Formatting rules for Markdown and MDX files. Markdown is a plain-text format for structured documents, while MDX adds interactive code to it.

In plain words
What is it for?
Use it when creating or editing documentation, including headings, lists, code blocks, links, images, tables, line lengths, and front matter.
Why use it?
It keeps documentation consistently structured, readable, accessible, and acceptable to the project's checks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it when creating or editing documentation, including headings, lists, code blocks, links, images, tables, line lengths, and front matter.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jandedobbeleer/oh-my-posh/markdown
About the project

oh-my-posh is a customizable prompt theme engine that renders command-line prompts across shells and platforms. Developers and terminal users use it to configure primary, secondary, right, and transient prompts in shells such as PowerShell, zsh, Bash, and cmd. The catalogue entries provide skills, instructions, agents, and an MCP integration for working with oh-my-posh.

JanDeDobbeleer/oh-my-posh · 23,434 stars · on GitHub · ohmyposh.dev

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 JanDeDobbeleer/oh-my-posh --skill markdown
Clone the repo
git clone --depth 1 https://github.com/JanDeDobbeleer/oh-my-posh

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 markdown

README.md
[![agentmods](https://agentmods.dev/badge/skills/jandedobbeleer/oh-my-posh/markdown/github.svg)](https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/markdown)
Your own site
<a href="https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/markdown"><img src="https://agentmods.dev/badge/skills/jandedobbeleer/oh-my-posh/markdown/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 markdown

Your own site · 80×15
<a href="https://agentmods.dev/skills/jandedobbeleer/oh-my-posh/markdown"><img src="https://agentmods.dev/badge/skills/jandedobbeleer/oh-my-posh/markdown.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 652 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
  • Snyk pass 7 Sept 2026
  • 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 MCP Rug Pull · line 60
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
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 $0.00029 $0.00652
Opus 5 $0.00015 $0.00326
Sonnet 5 $0.00006 $0.00130
Haiku 4.5 $0.00003 $0.00065

Measured 10d ago against content hash 841c2953f949, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

markdown 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 10d 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/markdown/SKILL.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Markdown Content Rules

The following markdown content rules are enforced in the validators:

  1. Headings: Use appropriate heading levels (H2, H3, etc.) to structure your content. Do not use an H1 heading, as this will be generated based on the title.
  2. Lists: Use bullet points or numbered lists for lists. Ensure proper indentation and spacing.
  3. Code Blocks: Use fenced code blocks for code snippets. Specify the language for syntax highlighting.
  4. Links: Use proper markdown syntax for links. Ensure that links are valid and accessible.
  5. Images: Use proper markdown syntax for images. Include alt text for accessibility.
  6. Tables: Use markdown tables for tabular data. Ensure proper formatting and alignment.
  7. Line Length: Limit line length to 120 characters for readability.
  8. Whitespace: Use appropriate whitespace to separate sections and improve readability.
  9. Front Matter: Include YAML front matter at the beginning of the file with required metadata fields.

Formatting and Structure

Follow these guidelines for formatting and structuring your markdown content:

  • Headings: Use ## for H2 and ### for H3. Ensure that headings are used in a hierarchical manner. Recommend restructuring if content includes H4, and more strongly recommend for H5.

  • Lists: Use - for bullet points and 1. for numbered lists. Indent nested lists with two spaces.

  • Code Blocks: Use fenced code blocks with a language for syntax highlighting:

    fmt.Println("hello")
    
  • Links:

    • Inline: [Docs](https://example.com/docs)
    • Reference-style: [Docs][docs] and add at the end of the page: [docs]: https://example.com/docs
  • Images: Use ![alt text](image URL) for images. Include a brief description of the image in the alt text.

  • Tables: Use | to create tables. Ensure that columns are properly aligned and headers are included.

  • Line Length: Break lines at 120 characters to improve readability. Use soft line breaks for long paragraphs.

  • Whitespace: Use blank lines to separate sections and improve readability. Avoid excessive whitespace.

Read the full file on GitHub · 76 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. 10d ago First seen · 76 lines · 29 tokens per session scan A 841c2953f949

Subscribe to this mod's changes

markdown is a skill published in the GitHub repository JanDeDobbeleer/oh-my-posh (23,434 stars, last pushed yesterday), licensed MIT. It adds 29 tokens to every session and 652 once invoked, about $0.0001 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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