# Cloud Exporter

The `CloudExporter` sends traces to Mastra Cloud for centralized monitoring and team collaboration. It's automatically enabled when using the default observability configuration with a valid access token.

## Configuration

### Prerequisites

1. **Mastra Cloud Account**: Sign up at [cloud.mastra.ai](https://cloud.mastra.ai)
2. **Access Token**: Generate in Mastra Cloud → Settings → API Tokens
3. **Environment Variables**: Set your credentials:

```bash
MASTRA_CLOUD_ACCESS_TOKEN=mst_xxxxxxxxxxxxxxxx
```

### Basic Setup

```typescript
import { Mastra } from "@mastra/core";
import { Observability, CloudExporter } from "@mastra/observability";

export const mastra = new Mastra({
  observability: new Observability({
    configs: {
      production: {
        serviceName: "my-service",
        exporters: [
          new CloudExporter(), // Uses MASTRA_CLOUD_ACCESS_TOKEN env var
        ],
      },
    },
  }),
});
```

### Recommended Configuration

Include CloudExporter in your observability configuration:

```typescript
import { Mastra } from "@mastra/core";
import {
  Observability,
  DefaultExporter,
  CloudExporter,
  SensitiveDataFilter,
} from "@mastra/observability";

export const mastra = new Mastra({
  observability: new Observability({
    configs: {
      default: {
        serviceName: "mastra",
        exporters: [
          new DefaultExporter(),
          new CloudExporter(), // Sends traces to Mastra Cloud (requires MASTRA_CLOUD_ACCESS_TOKEN)
        ],
        spanOutputProcessors: [
          new SensitiveDataFilter(),
        ],
      },
    },
  }),
});
```

### Complete Configuration

```typescript
new CloudExporter({
  // Optional - defaults to env var
  accessToken: process.env.MASTRA_CLOUD_ACCESS_TOKEN,

  // Optional - for self-hosted Mastra Cloud
  endpoint: "https://cloud.your-domain.com",

  // Batching configuration
  maxBatchSize: 1000, // Max spans per batch
  maxBatchWaitMs: 5000, // Max wait before sending batch

  // Diagnostic logging
  logLevel: "info", // debug | info | warn | error
});
```

## Viewing Traces

### Mastra Cloud Dashboard

1. Navigate to [cloud.mastra.ai](https://cloud.mastra.ai)

2. Select your project

3. Go to Observability → Traces

4. Use filters to find specific traces:

   - Service name
   - Time range
   - Trace ID
   - Error status

### Features

- **Trace Timeline** - Visual execution flow
- **Span Details** - Inputs, outputs, metadata
- **Performance Metrics** - Latency, token usage
- **Team Collaboration** - Share trace links

## Performance

CloudExporter uses intelligent batching to optimize network usage. Traces are buffered and sent in batches, reducing overhead while maintaining near real-time visibility.

### Batching Behavior

- Traces are batched up to `maxBatchSize` (default: 1000)
- Batches are sent when full or after `maxBatchWaitMs` (default: 5 seconds)
- Failed batches are retried with exponential backoff
- Graceful degradation if Mastra Cloud is unreachable

## Related

- [Tracing Overview](https://mastra.ai/docs/observability/tracing/overview/llms.txt)
- [DefaultExporter](https://mastra.ai/docs/observability/tracing/exporters/default/llms.txt)
- [Mastra Cloud Documentation](https://mastra.ai/docs/mastra-cloud/overview/llms.txt)