svelte-code-writer

Name: svelte-code-writer
Author: sveltejs

CLI tools for Svelte 5 documentation lookup and code analysis with built-in autofixer. Three core commands: list-sections to browse available docs, get-documentation to fetch full documentation for specific topics, and svelte-autofixer to analyze code and suggest fixes Autofixer supports Svelte 4 and 5 targeting via --svelte-version flag and async mode via --async option Accepts both inline code (with escaped $ characters) and file paths for analysis Designed for use within the svelte-file-editor agent when creating, editing, or analyzing .svelte components and .svelte.ts / .svelte.js modules

INSTALLATION

npx skills add https://github.com/sveltejs/ai-tools --skill svelte-code-writer

Run in your project or agent environment. Adjust flags if your CLI version differs.

SKILL.md

Svelte 5 Code Writer

CLI Tools

You have access to @sveltejs/mcp CLI for Svelte-specific assistance. Use these commands via npx:

List Documentation Sections

npx @sveltejs/mcp list-sections

Lists all available Svelte 5 and SvelteKit documentation sections with titles and paths.

Get Documentation

npx @sveltejs/mcp get-documentation "<section1>,<section2>,..."

Retrieves full documentation for specified sections. Use after list-sections to fetch relevant docs.

Example:

npx @sveltejs/mcp get-documentation "$state,$derived,$effect"

Svelte Autofixer

npx @sveltejs/mcp svelte-autofixer "<code_or_path>" [options]

Analyzes Svelte code and suggests fixes for common issues.

Options:

--async - Enable async Svelte mode (default: false)

--svelte-version - Target version: 4 or 5 (default: 5)

Examples:

# Analyze inline code (escape $ as \$)

npx @sveltejs/mcp svelte-autofixer '<script>let count = \$state(0);</script>'

# Analyze a file

npx @sveltejs/mcp svelte-autofixer ./src/lib/Component.svelte

# Target Svelte 4

npx @sveltejs/mcp svelte-autofixer ./Component.svelte --svelte-version 4

Important: When passing code with runes ($state, $derived, etc.) via the terminal, escape the $ character as \$ to prevent shell variable substitution.

Workflow

Uncertain about syntax? Run list-sections then get-documentation for relevant topics

Reviewing/debugging? Run svelte-autofixer on the code to detect issues

Always validate - Run svelte-autofixer before finalizing any Svelte component