markdown

A set of rules for writing and formatting Markdown, a plain-text document format commonly used for README files and documentation.

In plain words
What is it for?
Use it when creating or reviewing Markdown documentation, tables, code examples, links, and table-of-contents entries.
Why use it?
It keeps Markdown documents consistent and helps avoid formatting problems with tables, code, links, and headings.

Cursor rule for Cursor

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.

agentmods
npx agentmods add rules/m3au/playwright-bdd-cursor-template/markdown
Clone the repo
git clone --depth 1 https://github.com/m3au/playwright-bdd-cursor-template

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 303 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00303
Opus 5 $0.00000 $0.00151
Sonnet 5 $0.00000 $0.00061
Haiku 4.5 $0.00000 $0.00030

Measured 2d ago against content hash 64790bbc8f44, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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.

.cursor/rules/markdown.mdc · 46 lines

What it actually says

Markdown Standards

Table of Contents

  • N: manually update table of contents - they are automatically generated by IDE plugins
  • Use <!-- omit from toc --> for headings that should be excluded from the table of contents
  • N: modify generated table of contents entries

Tables

  • Use alignment syntax in separator row:
    • :--- for left align (default)
    • :---: for center align
    • ---: for right align
  • Escape pipes (\|) and other special characters in table cells

Code Blocks

  • Use code references (startLine:endLine:filepath) when citing existing code from the codebase
  • Use triple backticks with language tags for new/proposed code
  • A: specify language tag for syntax highlighting (e.g., bash, typescript, yaml)

Inline Code

  • Use backticks for: file names, variable names, commands, config keys, paths
  • Use code blocks for multi-line examples or complex code snippets
  • Use relative paths for internal documentation links
  • Reference code files using backticks: `file.ts`

Images

  • Use relative paths for internal images

Horizontal Rules

  • Use --- sparingly, only for major section breaks
  • Avoid multiple consecutive horizontal rules
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. 2d ago First seen · 46 lines · 0 tokens per session scan A 64790bbc8f44

Subscribe to this mod's changes

markdown is a cursor rule published in the GitHub repository m3au/playwright-bdd-cursor-template (2 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 303 tokens. 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.