SvelteKit

CodeServer hooksSvelte

Create the handle hook in hooks.server.ts. It initializes the SDK when the hook is created and measures supported outbound fetch calls. Where the platform exposes waitUntil, it uses that context to flush after a response.

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1. Install

Bash

npm install @checkupstream/sdk

2. Wire into hooks.server.ts

src/hooks.server.ts

import { checkUpstreamHandle } from "@checkupstream/sdk/integrations/sveltekit";
import { env } from "$env/dynamic/private";

const sdkKey = env.CHECKUPSTREAM_SDK_KEY;
if (!sdkKey) throw new Error("Set CHECKUPSTREAM_SDK_KEY before starting the app");

export const handle = checkUpstreamHandle({
  sdkKey,
});

Tip

If you already have a handle chain, compose checkUpstreamHandle() into it with the sequence() helper from @sveltejs/kit/hooks.

SDK Reference Nuxt recipe

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