Runtime Base URL in Salesforce Einstein BOT can be used to check Salesforce Einstein BOT status using REST API.

1. Go to Bot Builder.

2. Select Overview Page.

3. In Connections sections, click Add button.

4. Copy the Runtime Base URL.

5. Make a GET request to Runtime Base URL/status.

Reference Article:

https://developer.salesforce.com/docs/service/einstein-bot-api/references/bot-api-v5?meta=Summary