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

# Start Monitoring

> Resume real-time monitoring for a stopped webhook

Resume real-time monitoring for a webhook stopped with [`/stop`](/api-reference/v2/webhooks/stop). Not needed after [creating a webhook](/api-reference/v2/webhooks/create): monitoring starts automatically. Calling it on a webhook that is already running is harmless.

<Note>
  Monitoring consumes **10 credits per day** per active account (1 credit every 144 minutes). Credit consumption begins as soon as monitoring starts. Ignore this if you're on per-seat pricing: usage is unlimited.
</Note>

### Header Parameters

<ParamField header="x-api-key" type="string" required>
  Your API key
</ParamField>

### Path Parameters

<ParamField path="webhook_id" type="string" required>
  The unique identifier of the webhook to start monitoring for
</ParamField>

### Response

<ResponseField name="success" type="boolean">
  Whether monitoring was started successfully
</ResponseField>

<ResponseField name="data" type="object">
  <Expandable title="Properties">
    <ResponseField name="webhook_id" type="string">
      The webhook ID
    </ResponseField>

    <ResponseField name="account_id" type="string">
      The account being monitored
    </ResponseField>

    <ResponseField name="monitoring" type="boolean">
      Always `true` on success
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseExample>
  ```json Success Response theme={null}
  {
    "success": true,
    "data": {
      "webhook_id": "6789abcdef0123456789abcd",
      "account_id": "69c127c37cae0494dd827286",
      "monitoring": true
    },
    "metadata": {
      "action": "start_webhook",
      "credits_consumed": 0,
      "timestamp": "2025-01-15T10:30:00.000000"
    }
  }
  ```

  ```json Error — Account Not Found theme={null}
  {
    "success": false,
    "error": {
      "code": "INVALID_ACCOUNT",
      "message": "Account not found"
    },
    "metadata": {
      "action": "start_webhook",
      "credits_consumed": 0,
      "timestamp": "2025-01-15T10:30:00.000000"
    }
  }
  ```

  ```json Error — Monitoring Failed theme={null}
  {
    "success": false,
    "error": {
      "code": "CHANNEL_ERROR",
      "message": "Failed to start monitoring"
    },
    "metadata": {
      "action": "start_webhook",
      "credits_consumed": 0,
      "timestamp": "2025-01-15T10:30:00.000000"
    }
  }
  ```
</ResponseExample>

### Notes

* The account must be in a `connected` state for monitoring to start
* If monitoring is already active for this account (via another webhook), it will not create a duplicate connection
* If the account's token expires during monitoring, you will receive a disconnection event on your webhook URL
* You need at least **1 credit** available to start monitoring