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SvelteKit Remote Functions

Quick Start

File naming: *.remote.ts for remote function files

Which function? One-time action → command() | Repeated reads → query() | Forms → form()

Example

// actions.remote.ts
import { command } from '$app/server';
import * as v from 'valibot';

export const delete_user = command(
	v.object({ id: v.string() }),
	async ({ id }) => {
		await db.users.delete(id);
		return { success: true };
	},
);

// Call from client: await delete_user({ id: '123' });

Reference Files

• references/remote-functions.md – Complete guide with all patterns

Notes

• Remote functions execute on server when called from browser
• Args/returns must be JSON-serializable
• Schema validation via StandardSchemaV1 (Valibot/Zod)
• getRequestEvent() available for cookies/headers access
• Queries are cached – use .refresh() to get fresh data
• No .remote files in src/lib/server/ – they won’t work there
• Last verified: 2025-12-19