# Global Topic Catalogue

The global catalogue allows you to browser and search for topics arcoss all connected environments.

<figure><img src="/files/zSVl9EyhaSY3xPXHgqO5" alt=""><figcaption></figcaption></figure>

## Filtering by Environments & Tags

To restrict the topics returned you can use the filters for:

1. Environment
2. Tags
3. System topics
4. Compacted topics
5. Empty topics

<figure><img src="/files/mUNl43tNmwmoAqnSpLT5" alt=""><figcaption></figcaption></figure>

## Filtering and Sorting results

To filter, sort, group and manage columns select the ellipse (three dots) at the top of the column:

<figure><img src="/files/oRbxxfKlwknWNmW2dVca" alt=""><figcaption></figcaption></figure>

## View data in SQL Studio

To view data in the topic via the global SQL studio select the SQL icon for the topic on the left:

<figure><img src="/files/CHus809KBpb7wNFe7ExK" alt=""><figcaption></figcaption></figure>

The right arrow will take you to agent level Explore screen.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.lenses.io/latest/devx/6.1/user-guide/topics/global-topic-catalogue.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.