> For the complete documentation index, see [llms.txt](https://docs.trycortex.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.trycortex.ai/callable/use-cases/retrievals-from-knowledge-search-blocks.md).

# Retrievals from Knowledge Search Blocks

## Knowledge Search Block

Search blocks allow Callables to make queries to uploaded Knowledges.

<figure><img src="/files/5PXAZU2gtlMRrR810Zft" alt=""><figcaption></figcaption></figure>

Search Blocks consist of the following fields:

* **Query:** Provide the desired prompt to look for inside your knowledges
* **Knowledge:** Add and select as many knowledges that you have created. Allows for specific include or exclude tags to better refine your retrieval.

<figure><img src="/files/AQuLSK6n8kdLWWneOeSr" alt=""><figcaption></figcaption></figure>