> ## Documentation Index
> Fetch the complete documentation index at: https://praison.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# LangWatch

> Use LangWatch monitoring with PraisonAI TypeScript

```mermaid theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
graph LR
    U[Input] --> A[Agent]
    A --> O[Output]

    classDef agent fill:#8B0000,color:#fff
    classDef tool fill:#189AB4,color:#fff

    class A agent
    class U,O tool
```

# LangWatch Observability

## Environment Variables

```bash theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
export LANGWATCH_API_KEY=...
```

## Quick Start

<Steps>
  <Step title="Simple Usage">
    ```typescript theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
    import { Agent, setObservabilityAdapter } from 'praisonai';
    import { createObservabilityAdapter } from 'praisonai/observability';

    const obs = await createObservabilityAdapter('langwatch');
    setObservabilityAdapter(obs);

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

    await agent.chat('Hello!');
    await obs.flush();
    ```
  </Step>

  <Step title="With Configuration">
    Adjust observability adapter options and agent settings for production — see the sections above.
  </Step>
</Steps>

## Related

<CardGroup cols={2}>
  <Card title="LangWatch CLI Usage" icon="terminal" href="/docs/js/observability/langwatch-cli">
    LangWatch CLI Usage
  </Card>
</CardGroup>