@hashbrownai/anthropic is the Node adapter for Anthropic. It maps an AG-UI run from Hashbrown's React or Angular packages to the Anthropic SDK and streams AG-UI events back. Your server keeps the API key.

Getting Started

npm install @hashbrownai/anthropic @anthropic-ai/sdk @ag-ui/core @ag-ui/encoder --save

Deploy an Express server with a /run endpoint to use Hashbrown with Anthropic.

import type { RunAgentInput } from '@ag-ui/core';
import { EventEncoder } from '@ag-ui/encoder';
import { HashbrownAnthropic } from '@hashbrownai/anthropic';

app.post('/run', async (req, res) => {
  const abortController = new AbortController();
  req.once('aborted', () => abortController.abort());
  res.once('close', () => abortController.abort());
  const stream = HashbrownAnthropic.stream.text({
    apiKey: process.env.ANTHROPIC_API_KEY!,
    model: process.env.ANTHROPIC_MODEL ?? 'claude-haiku-4-5-20251001',
    input: req.body as RunAgentInput,
    signal: abortController.signal,
  });
  const encoder = new EventEncoder();

  res.header('Cache-Control', 'no-cache, no-store, must-revalidate');
  res.header('Content-Type', encoder.getContentType());
  res.header('Connection', 'keep-alive');
  res.flushHeaders();

  for await (const event of stream) {
    res.write(encoder.encodeSSE(event));
  }

  if (!res.writableEnded) {
    res.end();
  }
});

Docs

Read the docs for the Hashbrown Anthropic adapter.

Contributing

Hashbrown is a community-driven project. Read our contributing guidelines on how to get involved.

License

MIT © LiveLoveApp, LLC