---
editLink: false
lastUpdated: false
---

[@salesforce/b2c-tooling-sdk](../../../modules.md) / [operations/mrt](../index.md) / tailMrtLogs

# Function: tailMrtLogs()

> **tailMrtLogs**(`options`, `auth`): `Promise`\<[`TailMrtLogsResult`](../interfaces/TailMrtLogsResult.md)\>

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/tail-logs.ts:218](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/e7c16f1ae423da0aa47b3e10be88f9770b53619b/packages/b2c-tooling-sdk/src/operations/mrt/tail-logs.ts#L218)

Streams application logs from an MRT environment via WebSocket.

## Parameters

### options

[`TailMrtLogsOptions`](../interfaces/TailMrtLogsOptions.md)

Tail options

### auth

[`AuthStrategy`](../../../auth/interfaces/AuthStrategy.md)

Authentication strategy (ApiKeyStrategy)

## Returns

`Promise`\<[`TailMrtLogsResult`](../interfaces/TailMrtLogsResult.md)\>

Object with `stop()` to end streaming and `done` promise

## Example

```typescript
import { ApiKeyStrategy } from '@salesforce/b2c-tooling-sdk/auth';
import { tailMrtLogs } from '@salesforce/b2c-tooling-sdk/operations/mrt';

const auth = new ApiKeyStrategy(process.env.MRT_API_KEY!, 'Authorization');

const { stop, done } = await tailMrtLogs({
  projectSlug: 'my-storefront',
  environmentSlug: 'staging',
  onEntry: (entry) => console.log(entry.message),
  onConnect: () => console.log('Connected'),
}, auth);

// Later: stop()
```