export LANGCHAIN_API_KEY=...
export LANGCHAIN_PROJECT=default  # optional

import { Agent, setObservabilityAdapter } from 'praisonai';
import { LangSmithObservabilityAdapter } from 'praisonai/observability';

const obs = new LangSmithObservabilityAdapter();
await obs.initialize();
setObservabilityAdapter(obs);

const agent = new Agent({
  name: 'TracedAgent',
  instructions: 'You are helpful.',
  llm: 'openai/gpt-4o-mini'
});

await agent.chat('Hello!');
await obs.flush();