> 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/blocks/tools/knowledge-search.md).

# Knowledge Search

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.

**Using Knowledge Block for Retrieval:**

{% content-ref url="/pages/6If73mSRMTBP6L5Cnsdg" %}
[Retrievals from Knowledge Search Blocks](/callable/use-cases/retrievals-from-knowledge-search-blocks.md)
{% endcontent-ref %}