Providers API

Full API reference for built-in provider adapters.

anthropic()

Normalizes Anthropic SSE events (message_start, content_block_delta, etc.) into StreamEvent.

import { anthropic } from '@store-ai/core';

const store = createAIStore({ provider: anthropic() });

Handles text blocks, thinking blocks, tool use blocks, token usage (message_delta.usage), and stop reasons.

openai()

Normalizes OpenAI Chat Completions SSE events into StreamEvent.

import { openai } from '@store-ai/core';

const store = createAIStore({ provider: openai() });

Handles choices[0].delta.content, delta.tool_calls (with partial argument streaming), and finish_reason.

openaiResponses()

Normalizes OpenAI Responses API SSE events into StreamEvent.

import { openaiResponses } from '@store-ai/core';

const store = createAIStore({ provider: openaiResponses() });

Handles response.output_text.delta, function call argument deltas, and reasoning tokens.

aiSdkDataStream()

Consumes the Vercel AI SDK Data Stream protocol (UI Message Stream).

import { aiSdkDataStream } from '@store-ai/core';

const store = createAIStore({ provider: aiSdkDataStream() });

Useful for consuming streams from a Vercel AI SDK backend without modifying the server.

Provider Adapter Interface

All providers implement:

interface ProviderAdapter {
  name: string;
  createTransform(): TransformStream<SSEEvent, StreamEvent>;
}

You can implement this interface to support any custom SSE format.