Copilot-Skills: Instructions file for GitHub Copilot

.github/instructions/sveltekit.instructions.md

Copilot-Skills sveltekit.instructions.md is an instructions file for GitHub Copilot from TheSethRose/Copilot-Skills. It costs 293 tokens per session, scanned A, a copy of Copilot-Skills better-auth.instructions.md, MIT.

A set of coding instructions for SvelteKit, a framework for building web applications with Svelte. It covers setup, development, debugging, error handling, and project conventions.

In plain words
What is it for?
Use it when creating or editing Svelte, JavaScript, or TypeScript files in a SvelteKit project.
Why use it?
It helps the coding agent follow SvelteKit’s recommended patterns and avoid deprecated approaches. This makes project changes more consistent and maintainable.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is TheSethRose/Copilot-Skills's own configuration. It tells GitHub Copilot how to work on Copilot-Skills itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Copilot-Skills configures →

Reuse

Borrowing it

Nothing to install: this file belongs to TheSethRose/Copilot-Skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/TheSethRose/Copilot-Skills/main/.github/instructions/sveltekit.instructions.md
Clone the repo
git clone --depth 1 https://github.com/TheSethRose/Copilot-Skills

Made for: GitHub Copilot.

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 Copilot-Skills sveltekit.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/thesethrose/copilot-skills/sveltekit.svg)](https://agentmods.dev/instructions/thesethrose/copilot-skills/sveltekit)
Your own site
<a href="https://agentmods.dev/instructions/thesethrose/copilot-skills/sveltekit"><img src="https://agentmods.dev/badge/instructions/thesethrose/copilot-skills/sveltekit.svg" alt="Measured on agentmods" height="20"></a>
Per session 293 This file is loaded in full into every session.
When invoked 293 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 78% copy Near-identical to another mod 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 $0.00293 $0.00293
Opus 5 $0.00147 $0.00147
Sonnet 5 $0.00059 $0.00059
Haiku 4.5 $0.00029 $0.00029

Measured 4d ago against content hash d90fecc8cbd7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

Copilot-Skills sveltekit.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 4d 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

This is a copy

78% identical to Copilot-Skills better-auth.instructions.md — 34 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.github/instructions/sveltekit.instructions.md · 48 lines

What it actually says

Sveltekit Instructions

Auto-loaded when: Working with files matching: **/*.svelte, **/*.ts, **/*.js

Default Behaviors

When working with sveltekit:

  1. Follow Official Patterns: Use patterns from official sveltekit documentation
  2. Code Quality: Follow sveltekit best practices and conventions
  3. Error Handling: Implement robust error handling appropriate for sveltekit
  4. Documentation: Include inline comments for complex sveltekit usage

Common Workflows

Setup & Installation

Check references/getting_started.md for:

  • Installation steps
  • Configuration options
  • Initial setup

Development

  1. Reference official documentation patterns
  2. Use type-safe code when applicable
  3. Follow sveltekit naming conventions
  4. Test thoroughly

Debugging

Common issues and solutions documented in references/ files.

Quality Guidelines

  • ✅ Use official sveltekit APIs and patterns
  • ✅ Follow community best practices
  • ✅ Write maintainable, readable code
  • ✅ Include error handling
  • ⚠️ Avoid deprecated features
  • ⚠️ Don't bypass sveltekit safety features

Resources

  • Skill prompt: .github/prompts/sveltekit.skill.prompt.md
  • References: .github/copilot-skills/sveltekit/references/
  • Official docs: https://kit.svelte.dev/docs/
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. 4d ago First seen · 48 lines · 293 tokens per session scan A d90fecc8cbd7

Subscribe to this mod's changes

Copilot-Skills sveltekit.instructions.md is an instructions file published in the GitHub repository TheSethRose/Copilot-Skills (3 stars, last pushed 9mo ago), licensed MIT. It adds 293 tokens to every session, about $0.0015 per session on Opus 5. A static security scan graded it A with 0 findings. It is 78% identical to Copilot-Skills better-auth.instructions.md, differing in 34 lines, and is treated as a copy.

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