---
description: Query a D1 database from a SvelteKit application.
title: Query D1 from SvelteKit
image: https://developers.cloudflare.com/og-docs.png
---

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# Query D1 from SvelteKit

Query a D1 database from a SvelteKit application.

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/d1/examples/d1-and-sveltekit/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

[SvelteKit ↗](https://kit.svelte.dev/) is a full-stack framework that combines the Svelte front-end framework with Vite for server-side capabilities and rendering. You can query D1 from SvelteKit by configuring a [server endpoint ↗](https://kit.svelte.dev/docs/routing#server) with a binding to your D1 database(s).

To set up a new SvelteKit site on Cloudflare Pages that can query D1:

1. **Refer to [the SvelteKit guide](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/pages/framework-guides/deploy-a-svelte-kit-site/) and Svelte's [Cloudflare adapter ↗](https://kit.svelte.dev/docs/adapter-cloudflare)**.
2. Install the Cloudflare adapter within your SvelteKit project: `npm i -D @sveltejs/adapter-cloudflare`.
3. Bind a D1 database [to your Pages Function](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/pages/functions/bindings/#d1-databases).
4. Pass the `--d1 BINDING_NAME=DATABASE_ID` flag to `wrangler dev` when developing locally. `BINDING_NAME` should match what call in your code, and `DATABASE_ID` should match the `database_id` defined in your [Wrangler configuration file](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/workers/wrangler/configuration/): for example, `--d1 DB=xxxx-xxxx-xxxx-xxxx-xxxx`.

The following example shows you how to create a server endpoint configured to query D1.

* Bindings are available on the `platform` parameter passed to each endpoint, via `platform.env.BINDING_NAME`.
* With SvelteKit's [file-based routing ↗](https://kit.svelte.dev/docs/routing), the server endpoint defined in `src/routes/api/users/+server.ts` is available at `/api/users` within your SvelteKit app.

The example also shows you how to configure both your app-wide types within `src/app.d.ts` to recognize your `D1Database` binding, import the `@sveltejs/adapter-cloudflare` adapter into `svelte.config.js`, and configure it to apply to all of your routes.

```ts
import type { RequestHandler } from "@sveltejs/kit";

export async function GET({ request, platform }) {
	try {
		let result = await platform.env.DB.prepare(
			"SELECT * FROM users LIMIT 5",
		).run();
		return new Response(JSON.stringify(result), {
			headers: { "Content-Type": "application/json" },
		});
	} catch (error) {
		return Response.json({ error: "Failed to fetch users" }, {
			status: 500
		});
	}
}
```

```ts
// See https://kit.svelte.dev/docs/types#app
// for information about these interfaces
declare global {
	namespace App {
		// interface Error {}
		// interface Locals {}
		// interface PageData {}
		interface Platform {
			env: {
				DB: D1Database;
			};
			context: {
				waitUntil(promise: Promise<any>): void;
			};
			caches: CacheStorage & { default: Cache };
		}
	}
}

export {};
```

```js
import adapter from "@sveltejs/adapter-cloudflare";

export default {
	kit: {
		adapter: adapter({
			// See below for an explanation of these options
			routes: {
				include: ["/*"],
				exclude: ["<all>"],
			},
		}),
	},
};
```

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