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aparté

Vercel AI SDK bridge

For vendors outside the OpenAI-compat family (Anthropic, Google, Bedrock, 25+ more), bridge the Vercel AI SDK. You bring your @ai-sdk/* package and hand its model to createAiSdkProvider; the bridge maps streamText’s output to aparté’s event stream.

Terminal window
npm install @aparte/provider-ai-sdk ai @ai-sdk/anthropic

ai is a peer dependency pinned to the verified major (^7) — this bridge is the only aparté module that touches the SDK’s types.

import { createAnthropic } from '@ai-sdk/anthropic';
import { createAiSdkProvider } from '@aparte/provider-ai-sdk';
import { AparteConfig, DirectTransport } from '@aparte/core';


AparteConfig.registerAIProvider(createAiSdkProvider({
  id: 'anthropic',
  name: 'Anthropic',
  models: [{ id: 'claude-sonnet-4-5', name: 'Claude Sonnet 4.5' }],
  languageModel: (modelId, auth) =>
    createAnthropic({
      apiKey: typeof auth === 'string' ? auth : auth?.apiKey,
      headers: { 'anthropic-dangerous-direct-browser-access': 'true' }, // BYOK from the browser
    })(modelId),
}));


AparteConfig.setTransport(new DirectTransport({ byok: true }));

The languageModel factory receives the model id and the key/config your key-resolver produced — rebuild the vendor provider per call for UI-driven BYOK, or ignore auth if your factory already carries the key. The bridge owns its I/O through the SDK and honours the abort signal, so a user “stop” cancels the underlying vendor call.