Borrowing it
Nothing to install: this file belongs to beel-collab/presets.dev. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/beel-collab/presets.dev/main/release/svelte/native/copilot/.github/instructions/svelte.instructions.mdgit clone --depth 1 https://github.com/beel-collab/presets.devWrote 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.
[](https://agentmods.dev/instructions/beel-collab/presets.dev/svelte)<a href="https://agentmods.dev/instructions/beel-collab/presets.dev/svelte"><img src="https://agentmods.dev/badge/instructions/beel-collab/presets.dev/svelte/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.
<a href="https://agentmods.dev/instructions/beel-collab/presets.dev/svelte"><img src="https://agentmods.dev/badge/instructions/beel-collab/presets.dev/svelte.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.01032 | $0.01032 |
| Opus 5.5 | $0.00413 | $0.00413 |
| Sonnet 5.5 | $0.00206 | $0.00206 |
| Haiku 4.5 | $0.00103 | $0.00103 |
Grade A, and why
presets.dev svelte.instructions.md 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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Svelte Copilot Instructions: Runes, Load Functions and SSR
Path-specific Copilot instructions for Svelte. They apply through applyTo and leave .github/copilot-instructions.md in place.
Updated for Svelte 5.57.3 and SvelteKit 3.2.0, Nov 2026
Do not upgrade dependencies or the framework version unless the task asks.
Svelte 5.57.3 and @sveltejs/kit 3.2.0 are the npm latest versions read for this release. Svelte 5 uses runes. On SvelteKit 3, configuration is the sveltekit() Vite plugin in vite.config.js. svelte.config.js is not read. $app/stores is gone. Import page from $app/state and read page, not $page. $lib is not generated. Declare #lib and #lib/* in package.json imports, and include the file extension. Kit 3 wants Node 22.17 or newer, TypeScript 6, and Vite 8. A Kit 2 app keeps svelte.config.js and $lib until the task is the migration. Do not convert a Svelte 4 component to runes unless the task asks.
Project shape
Routes live in the project's router directory. +page, +layout, +page.server, and +server mean different things. A load in +page.server runs on the server. A universal load runs on both. Do not import a database client into a universal load or a .svelte module that also runs in the browser.
Shared UI lives in lib the way the repo already does. A rune component uses $props, $state, and $derived. Do not add a Svelte 4 export let next to $props in new code.
State
$state is what the component owns. $derived computes. $effect is a side effect with a cleanup, not a second derived store. Do not write $state from an effect that reads that same state.
A store at module scope in a server file is shared across requests. Do not put a user's data in a module-level variable. Request data stays in the load return value or in event.locals.
Load, actions, and SSR
Return the data the page renders. Throw the project's error() or redirect() instead of a bare object. A form action validates with the project's schema and returns fail() with field errors. Do not trust a hidden user id.
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.
- today First seen · 70 lines · 1,032 tokens per session scan A d0925df7dc0e
presets.dev svelte.instructions.md is an instructions file published in the GitHub repository beel-collab/presets.dev (3 stars, last pushed yesterday), licensed MIT. It adds 1,032 tokens to every session, about $0.0041 per session on Opus 5.5. 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 2026-11-13.
presets.dev svelte.instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| presets.dev svelte.instructions.mdbeel-collab/presets.dev | Instructions file | 3 | yesterday | MIT | A | 1,032 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,685 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,086 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 280k | 2d ago | MIT | A | 4,325 | Codex, OpenCode |