comment-usage

comment-usage is a cursor rule for Cursor from paulpham157/paul-s-cursor-rules. It costs 0 tokens per session (102 once invoked), scanned A, original, MIT.

A code-writing rule for keeping comments useful and limited. It explains that comments should describe reasons, unusual behavior, or possible pitfalls rather than obvious code.

In plain words
What is it for?
Use it to guide comments while writing or reviewing code.
Why use it?
It reduces clutter and helps prevent comments from becoming outdated or confusing.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

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/paulpham157/paul-s-cursor-rules/comment-usage
Clone the repo
git clone --depth 1 https://github.com/paulpham157/paul-s-cursor-rules

Made for: Cursor.

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 comment-usage

README.md
[![agentmods](https://agentmods.dev/badge/rules/paulpham157/paul-s-cursor-rules/comment-usage.svg)](https://agentmods.dev/rules/paulpham157/paul-s-cursor-rules/comment-usage)
Your own site
<a href="https://agentmods.dev/rules/paulpham157/paul-s-cursor-rules/comment-usage"><img src="https://agentmods.dev/badge/rules/paulpham157/paul-s-cursor-rules/comment-usage.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 102 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 5.1 $0.00000 $0.00102
Opus 5 $0.00000 $0.00051
Sonnet 5 $0.00000 $0.00020
Haiku 4.5 $0.00000 $0.00010

Measured 3d ago against content hash 547a43d7092e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

comment-usage 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 3d 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

1/framework_rules/rules/github-cursorrules-prompt-file-instructions/comment-usage.mdc · 8 lines

What it actually says


description: This rule dictates how comments should be used within the codebase to enhance understanding and avoid clutter. globs: **/.

  • Use comments sparingly, and when you do, make them meaningful.
  • Don't comment on obvious things. Excessive or unclear comments can clutter the codebase and become outdated.
  • Use comments to convey the "why" behind specific actions or explain unusual behavior and potential pitfalls.
  • Provide meaningful information about the function's behavior and explain unusual behavior and potential pitfalls.
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. 3d ago First seen · 8 lines · 102 tokens per session scan A 547a43d7092e

Subscribe to this mod's changes

comment-usage is a cursor rule published in the GitHub repository paulpham157/paul-s-cursor-rules (27 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 102 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 2026-09-03.