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.
npx skills add joshuadavidthomas/agent-skills --skill sveltekitgit clone --depth 1 https://github.com/joshuadavidthomas/agent-skillsWrote 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/skills/joshuadavidthomas/agent-skills/sveltekit)<a href="https://agentmods.dev/skills/joshuadavidthomas/agent-skills/sveltekit"><img src="https://agentmods.dev/badge/skills/joshuadavidthomas/agent-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.
<a href="https://agentmods.dev/skills/joshuadavidthomas/agent-skills/sveltekit"><img src="https://agentmods.dev/badge/skills/joshuadavidthomas/agent-skills/sveltekit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00154 | $0.02722 |
| Opus 5 | $0.00077 | $0.01361 |
| Sonnet 5 | $0.00031 | $0.00544 |
| Haiku 4.5 | $0.00015 | $0.00272 |
Grade A, and why
sveltekit 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 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.
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 — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Think in SvelteKit
SvelteKit is not just Svelte with folders. It is an application boundary system: route files define ownership of data, server code stays on the server, form submissions progressively enhance, and redirects/errors are part of control flow.
The core failure mode: writing SvelteKit like a client-side SPA with incidental server helpers. Fetching server-owned data from components. Hiding auth in hooks and assuming layouts protect endpoints. Returning class instances from load. Calling redirect() without throwing. Building JavaScript-only forms when native forms plus actions would work. These work until SSR, progressive enhancement, caching, or security boundaries matter.
Use this skill for app-level SvelteKit decisions. Use svelte5 for component internals: runes, snippets, component props, DOM events, accessibility, transitions, and component state.
How SvelteKit Thinks
Routes own application boundaries
1. File names are behavior. +page.svelte, +layout.server.ts, +page.server.ts, and +server.ts are not organization trivia; they decide where code runs and who can call it. See references/file-naming.md.
2. Route groups organize policy, not URLs. (app) and (auth) are for layout/auth/data boundaries without changing paths. Put protected routes under a protected layout; keep login/signup outside that group. See references/layout-patterns.md.
3. Layouts protect pages, not endpoints. A protected +layout.server.ts gates child pages. It does not protect sibling or child +server.ts endpoints; every endpoint must enforce auth itself. See references/auth.md.
Data flow should reveal ownership
4. Server-owned data loads on the server. Database queries, secrets, private APIs, and session-derived data belong in +page.server.ts / +layout.server.ts, not in component onMount or browser fetches. See references/load-functions.md.
What ships with it
13 files 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.
- README.md 2.4 KB
- references/auth.md 6.0 KB
- references/better-auth.md 4.3 KB
- references/cloudflare.md 5.5 KB
- references/errors-and-redirects.md 4.3 KB
- references/file-naming.md 2.9 KB
- references/form-actions.md 5.8 KB
- references/forms-validation.md 11 KB
- references/layout-patterns.md 2.9 KB
- references/load-functions.md 4.1 KB
- references/remote-functions.md 3.6 KB
- references/serialization.md 7.9 KB
- references/ssr-hydration.md 2.4 KB
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 · 158 lines · 154 tokens per session scan A ce74ef63ee3d
sveltekit is a skill published in the GitHub repository joshuadavidthomas/agent-skills (49 stars, last pushed 1mo ago), licensed MIT. It adds 154 tokens to every session and 2,722 once invoked, about $0.0008 per session on Opus 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 2026-08-30.
Other skills, from other repositories
shadcn-svelte
Pre-built shadcn-svelte components for json-render Svelte apps. Use when working with @json-render/shadcn-svelte, adding standard UI components to a Svelte catalog, or building Svelte web UIs with shadcn-svelte + Tailwind CSS components.
create-site
Creates a new Power Pages code site (SPA) using React, Angular, Vue, or Astro. Guides through the full process from initial concept to deployed site: requirements discovery, scaffolding, component planning, design, implementation, validation, and deployment. Use when the user wants to create, build, or scaffold a new…
v3-create-crud
A page generator for standard create, read, update, and delete screens, commonly called CRUD screens. It uses Element Plus, a Vue user-interface library, to build tables, searches, pagination, forms, and delete confirmations.
v3-use-composables
Documentation for reusable Vue functions in a project, covering device detection, asynchronous dropdown data, loading screens, pagination, routing, themes, page titles, and watermarks.
moai-domain-uiux
UI/UX design systems specialist covering accessibility, icons, theming, design tokens, and user experience patterns. Use when working on design systems, WCAG compliance, ARIA patterns, or dark mode theming.
moai-domain-frontend
Frontend development specialist covering React 19, Next.js 16, Vue 3.5, and modern UI/UX patterns with component architecture. Use when building web UIs, implementing components, optimizing frontend performance, or integrating state management.