
mcp-svelte-docs
🔍 MCP server that lets you search and access Svelte documentation with built-in caching
Stars: 115

A Model Context Protocol (MCP) server providing authoritative Svelte 5 and SvelteKit definitions extracted directly from TypeScript declarations. Get precise syntax, parameters, and examples for all Svelte 5 concepts through a single, unified interface. The server offers a 'svelte_definition' tool that covers various Svelte 5 runes, modern features, event handling, migration guidance, TypeScript interfaces, and advanced patterns. It aims to provide up-to-date, type-safe, and comprehensive documentation for Svelte developers.
README:
A Model Context Protocol (MCP) server providing authoritative Svelte 5 and SvelteKit definitions extracted directly from TypeScript declarations. Get precise syntax, parameters, and examples for all Svelte 5 concepts through a single, unified interface.
Definition-First Approach: Rather than multiple specialized tools,
this server provides one powerful svelte_definition
tool that
accesses 28+ comprehensive definitions covering:
- All Svelte 5 runes ($state, $derived, $props, $effect variants)
- Modern features (snippets, await expressions, remote functions)
- Event handling (DOM events, custom events, component communication)
- Migration guidance (Svelte 4 to 5 patterns and best practices)
- TypeScript interfaces (Snippet, Snapshot types)
- Advanced patterns (global state, common mistakes, lifecycle equivalents)
Single, powerful tool for all Svelte 5 and SvelteKit concepts:
svelte_definition(identifier: string, format?: "syntax"|"quick"|"full")
Examples:
-
svelte_definition("$state")
- Complete $state documentation -
svelte_definition("snippets", "quick")
- Snippet overview with example -
svelte_definition("onclick", "syntax")
- Just the TypeScript signature -
svelte_definition("migration-patterns")
- Svelte 4 → 5 migration guide
Response Formats:
-
"syntax"
- TypeScript signature only (~50 words) -
"quick"
- Definition + minimal example (~200 words) -
"full"
- Complete documentation with examples (~500-1000 words, default)
Core Runes: $state
, $state.raw
, $state.snapshot
, $derived
,
$derived.by
, $props
, $bindable
, $effect
, $effect.pre
,
$effect.root
, $effect.pending
, $effect.tracking
Development Tools: $inspect
, $host
Features & Patterns: snippets
, onclick
, component-events
,
migration-patterns
, await-expressions
, remote-functions
,
global-state
, common-mistakes
, lifecycle-equivalents
Event Handling: custom-events
, event-delegation
,
event-modifiers
TypeScript Interfaces: snippet
, snapshot
- Direct from Source: Definitions extracted from official Svelte 5 TypeScript declarations
- Always Current: Reflects the actual API, not outdated tutorials
- Type-Safe: Includes precise parameter types, return values, and constraints
-
One Tool:
svelte_definition
replaces 16+ specialized tools - 28+ Definitions: Every Svelte 5 rune, feature, and pattern covered
-
Consistent Responses: Same interface whether you need
$state
orremote-functions
-
Await Expressions: Async operations directly in templates
(
await-expressions
) -
Remote Functions: Type-safe client-server communication
(
remote-functions
) -
All Runes: Complete
$effect
family,$state
variants,$derived.by
,$bindable
- Advanced Patterns: Event handling, global state, component communication
- Fuzzy Matching: Suggests correct identifiers for typos
- Related Concepts: Points to similar definitions when searches fail
- Migration Help: Converts Svelte 4 patterns to Svelte 5 equivalents
Claude Desktop (via WSL)
{
"mcpServers": {
"mcp-svelte-docs": {
"command": "wsl.exe",
"args": ["bash", "-c", "npx -y mcp-svelte-docs"]
}
}
}
Cursor
Windsurf (via WSL)
{
"mcpServers": {
"mcp-svelte-docs": {
"command": "wsl.exe",
"args": ["bash", "-c", "npx -y mcp-svelte-docs"]
}
}
}
Windows (without WSL)
{
"mcpServers": {
"mcp-svelte-docs": {
"command": "npx",
"args": ["-y", "mcp-svelte-docs"]
}
}
}
macOS / Linux
{
"mcpServers": {
"mcp-svelte-docs": {
"command": "npx",
"args": ["-y", "mcp-svelte-docs"]
}
}
}
Contributions are welcome! Please feel free to submit a Pull Request.
MIT License - see the LICENSE file for details.
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