javascript

javascript is a cursor rule for Cursor from sybrew/troy. It costs 0 tokens per session (275 once invoked), scanned A, original, MIT.

JavaScript coding and formatting rules, including instructions for rebuilding compressed JavaScript and CSS after certain source changes.

In plain words
What is it for?
Use them when editing JavaScript or the specified library sources that require minification.
Why use it?
They keep JavaScript changes consistent and prevent accidental edits to generated compressed files.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Use them when editing JavaScript or the specified library sources that require minification.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/sybrew/troy/javascript
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.

Clone the repo
git clone --depth 1 https://github.com/sybrew/troy

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 javascript

README.md
[![agentmods](https://agentmods.dev/badge/rules/sybrew/troy/javascript/github.svg)](https://agentmods.dev/rules/sybrew/troy/javascript)
Your own site
<a href="https://agentmods.dev/rules/sybrew/troy/javascript"><img src="https://agentmods.dev/badge/rules/sybrew/troy/javascript/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 javascript

Your own site · 80×15
<a href="https://agentmods.dev/rules/sybrew/troy/javascript"><img src="https://agentmods.dev/badge/rules/sybrew/troy/javascript.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 275 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00275
Opus 5.5 $0.00000 $0.00110
Sonnet 5.5 $0.00000 $0.00055
Haiku 4.5 $0.00000 $0.00028

Measured 2d ago against content hash 91ac6b063d8c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

javascript 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/javascript.mdc · 12 lines

What it actually says

Follow the JavaScript rules in @.github/instructions/javascript.instructions.md when editing JavaScript files.

After editing unminified src/troy-server/library/js sources, run the minify skill. Do not create, edit, read, grep, search, or git diff *.min.js or *.min.css, including after minify exit code 0.

Read .local/minify/permission.txt with an explicit path (Grep/Glob cannot see .local/). Never invent flags. If the file does not exist, prompt. If you cannot prompt and no permissions exist, skip minification altogether and ask at the end of the chat. After the user replies with both flags, write those two lines (JS=True/JS=False and CSS=True/CSS=False). If JS=False, do not prompt again, and do not clone or minify JS. If JS=True and .local/minify/babel-tsf/run.js is missing, clone https://github.com/theseoframework/babel-tsf into .local/minify/babel-tsf and run npm install there. That public repo is the source of truth.

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 · 12 lines · 275 tokens per session scan A 91ac6b063d8c

Subscribe to this mod's changes

javascript is a cursor rule published in the GitHub repository sybrew/troy (55 stars, last pushed 14d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 275 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 2026-10-26.