Guidance for building full-stack Svelte applications with SvelteKit, a framework that supplies page routing, server-side code, form handling, and deployment options.

Use it when creating routes, loading data, handling forms, adding API endpoints, choosing server or browser rendering, or configuring deployment.

It provides the project structure and framework conventions needed to add features without breaking how pages and server code work.

sveltekit — Skill for Claude Code by bobmatnyc

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.

Any agent

npx skills add bobmatnyc/claude-mpm-skills --skill sveltekit

Clone the repo

git clone --depth 1 https://github.com/bobmatnyc/claude-mpm-skills

Made for: Claude Code.

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/skills/bobmatnyc/claude-mpm-skills/sveltekit/github.svg)](https://agentmods.dev/skills/bobmatnyc/claude-mpm-skills/sveltekit)

Your own site

<a href="https://agentmods.dev/skills/bobmatnyc/claude-mpm-skills/sveltekit"><img src="https://agentmods.dev/badge/skills/bobmatnyc/claude-mpm-skills/sveltekit/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/bobmatnyc/claude-mpm-skills/sveltekit"><img src="https://agentmods.dev/badge/skills/bobmatnyc/claude-mpm-skills/sveltekit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 8,498 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

Socket pass 20 Apr 2026
Snyk fail 20 Apr 2026
NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 4 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

high Prompt Injection · line 147
Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
high Prompt Injection · line 320
Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
high Prompt Injection · line 528
Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.

Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
medium MCP Rug Pull · line 1261
Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.

Fix: Pin the image: image:tag or image@sha256:abc123

How audits are shown

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	$0.00030	$0.08498
Opus 5	$0.00015	$0.04249
Sonnet 5	$0.00006	$0.01700
Haiku 4.5	$0.00003	$0.00850

Measured 11d ago against content hash 117ec048d485, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

sveltekit scanned grade A with 1 finding 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

return fetch(request);

toolchains/javascript/frameworks/sveltekit/SKILL.md · 1,409 lines

How it starts

The opening of the file, as written. The whole thing — 1,409 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SvelteKit - Full-Stack Svelte Framework

Overview

SvelteKit is the official full-stack framework for Svelte, providing file-based routing, server-side rendering (SSR), static site generation (SSG), form handling with progressive enhancement, and deployment adapters for any platform.

Key Features:

File-based routing: Automatic routes from src/routes/ directory structure
Load functions: Type-safe data fetching (+page.ts, +page.server.ts)
Form actions: Native form handling with progressive enhancement
SSR/SSG/SPA: Flexible rendering modes with per-route control
Adapters: Deploy to Vercel, Netlify, Node.js, Cloudflare, and more
TypeScript-first: Generated types from $types for type safety
Hooks: Middleware-like handle, handleError, handleFetch
API routes: +server.ts files for REST endpoints

Installation:

# Create new SvelteKit project
npm create svelte@latest my-app
cd my-app
npm install
npm run dev -- --open

# Templates: skeleton, demo app, library
# Choices: TypeScript, ESLint, Prettier, Playwright, Vitest

Project Structure

Standard SvelteKit Layout

my-sveltekit-app/
├── src/
│   ├── routes/                   # File-based routing
│   │   ├── +page.svelte         # / (home page)
│   │   ├── +page.ts             # Universal load function
│   │   ├── +page.server.ts      # Server-only load function
│   │   ├── +layout.svelte       # Shared layout
│   │   ├── +layout.ts           # Layout load function
│   │   ├── +error.svelte        # Error page
│   │   ├── about/
│   │   │   └── +page.svelte     # /about
│   │   ├── blog/
│   │   │   ├── +page.svelte     # /blog (list)
│   │   │   ├── +page.server.ts  # Load posts
│   │   │   └── [slug]/
│   │   │       ├── +page.svelte # /blog/my-post
│   │   │       └── +page.server.ts
│   │   └── api/
│   │       └── posts/
│   │           └── +server.ts   # GET /api/posts
│   ├── lib/
│   │   ├── components/
│   │   ├── server/              # Server-only utilities
│   │   │   └── database.ts
│   │   ├── stores/
│   │   └── utils/
│   ├── hooks.server.ts          # Server hooks
│   ├── hooks.client.ts          # Client hooks
│   ├── app.html                 # HTML template
│   └── app.d.ts                 # TypeScript declarations
├── static/                       # Static assets (robots.txt, favicon)
├── tests/                        # Playwright tests
├── svelte.config.js             # SvelteKit configuration
├── vite.config.ts               # Vite configuration
└── package.json

Read the full file on GitHub · 1,409 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

metadata.json 661 B

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.

11d ago First seen · 1,409 lines · 30 tokens per session scan A 117ec048d485

Subscribe to this mod's changes

sveltekit is a skill published in the GitHub repository bobmatnyc/claude-mpm-skills (74 stars, last pushed 1mo ago), licensed MIT. It adds 30 tokens to every session and 8,498 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Adapters DevOps and cloud Frontend Languages TypeScript forms framework fullstack routing ssg ssr svelte sveltekit toolchain

sveltekit

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Makes network callslowCapability

How it starts

SvelteKit - Full-Stack Svelte Framework

Overview

Project Structure

Standard SvelteKit Layout

What ships with it

What this file has done since we first saw it

Other skills, from other repositories

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