> For the complete documentation index, see [llms.txt](https://docs.tomorrowx.com/cap/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tomorrowx.com/cap/product-reference/installation-and-configuration/monitoring-by-external-systems.md).
# Monitoring by External Systems
If you have a need to monitor the space.vars.X\_Product\_Name engine using an external monitoring service, you can include the following line of code in your application status page to determine if the space.vars.X\_Product\_Name engine is active:
```java
software.tomorrow.server.Engine.isStarted()
```
For example: The following JSP construct will result in a page that outputs true or false, depending on whether the engine is started or not:
{% code overflow="wrap" %}
```html
<code class="expression">space.vars.X_Product_Name</code> Status
<% // Make sure there is no caching response.setHeader("Pragma", "No-cache");
response.setDateHeader("Expires", 0); response.setHeader("Cache-Control",
"private"); response.setHeader("Cache-Control", "no-cache");
response.setHeader("Cache-Control", "must-revalidate");
response.setHeader("Expires", "Mon, 26 Jul 1997 00:00:00 GMT"); %>
space.vars.X_Product_Name is
started: <%=software.tomorrow.server.Engine.isStarted()%>
```
{% endcode %}
---
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.tomorrowx.com/cap/product-reference/installation-and-configuration/monitoring-by-external-systems.md?ask=&goal=
```
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