markdown

A set of rules for applying markdownlint-cli2, a tool that checks Markdown formatting, to documentation.

In plain words
What is it for?
Checking and automatically fixing Markdown files when creating or updating documentation.
Why use it?
It keeps documentation formatting consistent and identifies style problems after edits.

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/sisimomo/aivm/markdown
Clone the repo
git clone --depth 1 https://github.com/sisimomo/aivm

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 95 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 $0.00095
Opus 5 $0.00000 $0.00048
Sonnet 5 $0.00000 $0.00019
Haiku 4.5 $0.00000 $0.00010

Measured 2d ago against content hash 38b4727cac39, 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 · 9 lines

What it actually says

Markdown Best Practices

  • We use markdownlint-cli2 for all markdown styling.
  • Always run this command after editing markdown: npx markdownlint-cli2 "<file_path>" --fix
  • Ensure any generated documentation aligns with our local linting rules. If errors persist, adjust your formatting rather than modifying the linting configuration.
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 · 9 lines · 0 tokens per session scan A 38b4727cac39

Subscribe to this mod's changes

markdown is a cursor rule published in the GitHub repository sisimomo/aivm (2 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 95 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.