evaluateAll and bootstrap.

evaluateAll(context) resolves every Flag in the credential's App and Environment for one Evaluation Context. It returns the normalized context, an evaluations map keyed by Flag Key, and the strong ETag that tagged the result.

import { createSplitchClient } from "@splitch/sdk";

const splitch = createSplitchClient({ apiKey: "sk_..." });
const precomputed = await splitch.evaluateAll({ targetingKey: user.id });

precomputed.context;
precomputed.evaluations;
precomputed.etag;

The call fires no Exposure. A fresh assignment in a live experiment Run carries an exposureTicket instead. The browser client redeems that ticket only when it reads the Flag, so a page that holds 20 Flags and shows 3 records 3 Exposures.

The payload contains resolved values, Variant names, non-revealing reasons, and tickets. It never contains Targeting Rules, rollout percentages, or the salt.

Bootstrap a browser client

Generate Precomputed Evaluations on the server with an API Key, serialize that exact result into the page, then construct the browser client with the matching Evaluation Context and the public Client Key. A valid bootstrap makes init() perform no fetch.

import { createSplitchBrowserClient } from "@splitch/sdk/browser";

const splitch = createSplitchBrowserClient({
  clientKey: "pk_...",
  context: precomputed.context,
  bootstrap: precomputed,
});

await splitch.init();

Bootstrap echoes the Evaluation Context, including targetingKey and every attribute you passed. It becomes public page source. Pass only attributes you would publish, and hash or omit the rest.

Bootstrap must carry the exact normalized Evaluation Context used by the browser client. A mismatch throws SDK_BOOTSTRAP_CONTEXT_MISMATCH during construction instead of silently fetching another Entity's result.

Failure and idempotency

idempotencyKey is optional because the SDK mints one per fetch. Pass your own when retrying an uncertain fetch. If crypto.randomUUID is unavailable, the SDK throws SDK_IDEMPOTENCY_KEY_UNAVAILABLE and requires you to supply the key.

Unlike evaluate, this call has no Default Variant. It throws SplitchSdkError on failure instead of returning a partial or empty payload.