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

# System Library

> Reference telemetry data across Cortex XCOR in the System Library

The **System Library** collects reference resources for telemetry data across
Palo Alto Networks Cortex XCOR. The System Library is composed of the following
Cortex XCOR tools:

* **[Attributes Catalog](/investigate/system-library/attributes-catalog):** Review
  every raw and [derived](/investigate/system-library/attributes-catalog/derived-attributes)
  telemetry attribute in a tabular list.

  <Note>
    This feature is in Early Access (EA), and might not be visible in your app. To learn
    more about this program and the features it contains, see the
    [Early access](/early-access) page.
  </Note>
* **[Metrics Catalog](/investigate/system-library/metrics-catalog):** Review every
  metric received by Cortex XCOR in a tabular list.


## Related topics

- [Metrics Catalog](/investigate/system-library/metrics-catalog.md)
- [Attributes Catalog](/investigate/system-library/attributes-catalog.md)
- [Derived attributes](/investigate/system-library/attributes-catalog/derived-attributes.md)
- [Navigate the Cortex XCOR interface](/navigate.md)
- [Wavefront](/ingest/metrics-traces/collector/addl-metrics/wavefront.md)


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