> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qxlabs.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Connected apps and knowledge
Two sections of the agent editor decide what an agent can reach: **Connected apps** for the third-party services it may call, and **Knowledge** for the vaults it can search and cite.
## Connected apps
In the agent editor, the **Connected apps** section picks which third-party services the agent can interact with.
* Add an app the org has already connected, or use **Connect new app** to authorize a new one on the spot.
* Expand each app to choose exactly which of its tools the agent can use (e.g. give it Gmail access).
Give agents the minimum set of tools they need. A focused toolset makes tool selection more reliable and keeps the agent fast.
## Knowledge
Attach **vaults** so the agent can search your documents and cite them. There's no separate search box: the agent searches its attached vaults on its own whenever a question needs your internal knowledge.
Click **Add knowledge** to attach a vault, then scope it to specific folders or files so the agent only searches what's relevant.
You can also turn vaults on or off for a single [chat](/agents/chat) from the composer's **Knowledge popover**, without changing the agent.
When your question needs a vault, the agent searches it and answers, showing numbered **sources** you can click to see the exact passages it used, so every claim traces back to a document.
