npm install livekit-plugin-alchemyst

npm install @livekit/agents zod

import 'dotenv/config';
import { createAlchemystPlugin } from 'livekit-plugin-alchemyst';
import { voice } from '@livekit/agents';

const alchemyst = createAlchemystPlugin({
  apiKey: process.env.ALCHEMYST_API_KEY,
  groupNames: ['voice-agent'],
});

class MyAgent extends voice.Agent {
  constructor() {
    super({
      instructions: 'You are a helpful voice assistant with persistent memory.',
      tools: alchemyst.getTools(),
    });
  }

  override async onUserTurnCompleted(
    turnCtx: llm.ChatContext,
    newMessage: llm.ChatMessage,
  ): Promise<void> {
    const userText = newMessage.textContent;
    if (!userText) return;

    const memories = await alchemyst.search(userText);
    if (memories.length > 0) {
      turnCtx.addMessage({
        role: 'system',
        content: memories.map((m, i) => `${i + 1}. ${m.content}`).join('\n'),
      });
    }
  }
}