sveltekit

Mental-model reset for SvelteKit apps. Use when writing or reviewing routes, layouts, load functions, form actions, remote functions, hooks, auth, cookies, endpoints, redirects, errors, SSR, progressive enhancement, or app-level data flow. Triggers on SvelteKit, +page, +layout, +server, +page.server.ts, +layout.server.ts, hooks.server.ts, load, actions, fail(), redirect(), error(), cookies, locals, route groups, protected routes, sessions, form actions, enhance, remote functions, command(), query(), form(), getRequestEvent(), SSR, hydration, and serialization. Use svelte5 for component-level runes, snippets, accessibility, actions, transitions, and component API review.

1.05x

Quality

95%

Does it follow best practices?

Impact

100%

1.05x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

100%

Securing a SvelteKit Application Backend

Auth boundaries and route protection structure

Criteria

Without context

With context

Route group separation

100%

Hooks populate only

100%

Hooks throws on missing DB

70%

100%

Layout uses throw redirect

100%

Layout redirect correctness

100%

Endpoint self-auth

100%

Endpoint returns 401 unauthorized

100%

Structure file present

100%

TypeScript types used

100%

11%

User Profile Update Form

Form action with server validation and progressive enhancement

Criteria

Without context

With context

Action in page.server.ts

100%

fail() returned

100%

Field-shaped errors

75%

100%

throw redirect on success

70%

100%

Server-side validation

100%

Native form structure

100%

Field.* error components

70%

100%

use:enhance present

100%

Serializable load data

100%

Schema in $lib/schemas

100%

form prop used for errors

75%

100%

Dashboard Page Refactor

Data ownership, SSR safety, and load function boundaries

Criteria

Without context

With context

User data moved to server

100%

No secrets in universal load

100%

localStorage in effect or removed

100%

No $effect for URL navigation

100%

Serializable load return data

100%

onMount not used for server data

100%

CHANGES.md present

100%

CHANGES explains server load boundary

100%

CHANGES explains browser API fix

100%

CHANGES explains effect/navigation fix

100%

Output files present

100%

Repository: joshuadavidthomas/agent-skills
Commit: d20109a

Evaluated: 20 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Securing a SvelteKit Application Backend User Profile Update Form Dashboard Page Refactor

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