A set of rules for editing Svelte and SvelteKit components, which are web interface files and application routes. It first matches whether the project uses Svelte 4 or Svelte 5, because their reactivity systems differ.

Use it when changing Svelte components, SvelteKit pages, reactive state, props, events, stores, data loading, or form handling.

It prevents mixing incompatible component patterns or moving server and browser logic into the wrong files. It also keeps props, events, forms, stores, and existing route structure intact.

svelte — Cursor rule for Cursor by inboxpraveen

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/inboxpraveen/Minimize-Cursor-Cost

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.

README.md

[![agentmods](https://agentmods.dev/badge/rules/inboxpraveen/minimize-cursor-cost/svelte.svg)](https://agentmods.dev/rules/inboxpraveen/minimize-cursor-cost/svelte)

Your own site

<a href="https://agentmods.dev/rules/inboxpraveen/minimize-cursor-cost/svelte"><img src="https://agentmods.dev/badge/rules/inboxpraveen/minimize-cursor-cost/svelte.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 450 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00450
Opus 5	$0.00000	$0.00225
Sonnet 5	$0.00000	$0.00090
Haiku 4.5	$0.00000	$0.00045

Measured 8d ago against content hash 124720efadd1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

svelte 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 8d 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.

lean-cursor/.cursor/rules/svelte.mdc · 45 lines

What it actually says

Svelte / SvelteKit Rules

Detect the version

Svelte 4 (stores, $: reactive statements) vs Svelte 5 (runes: $state, $derived, $effect).
Don't mix runes and pre-runes reactivity in the same component.
Don't migrate to runes unless asked.

Output Format

Single change → show only the affected <script>, markup, or <style> block.
Don't reprint imports unless adding new ones.

Reactivity

Svelte 4: match existing $: style. Don't replace with derived stores unless asked.
Svelte 5: match existing rune usage exactly. Don't introduce $effect if $derived is enough.

Props & Events

Don't rename props or dispatched events.
Svelte 5: match $props() destructuring style.
Svelte 4: match export let usage; don't switch to $$props/$$restProps unless needed.

SvelteKit-Specific

App routes: match existing +page.svelte / +page.server.ts / +page.ts split.
Don't move logic from +page.server.ts to +page.ts (or vice versa) without flagging.
Match existing load function shape (return shape, await pattern).
Don't introduce form actions if the existing page uses an API endpoint.

Stores

Match existing store style: writable/readable/derived stores vs context API vs runes.
Don't introduce a new store library.

Styling

Match existing scoped vs :global() usage.
Don't switch CSS framework (Tailwind / vanilla / preprocessor).

Never

Don't add <svelte:options accessors /> unless needed.
Don't add transitions / animations to satisfy "polish".
Don't change adapter (@sveltejs/adapter-*) while doing a feature task.

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.

8d ago First seen · 45 lines · 0 tokens per session scan A 124720efadd1

Subscribe to this mod's changes

svelte is a cursor rule published in the GitHub repository inboxpraveen/Minimize-Cursor-Cost (7 stars, last pushed yesterday), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 450 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.

Claude Code Frontend Vue and Svelte claude-ai claude-skills cursor cursor-rules vibe-coding

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