> ## Documentation Index
> Fetch the complete documentation index at: https://xura.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Skills, tools & MCPs

> How an Agent gets its capabilities.

An Agent's capability set is the union of:

* **Skills** — capability packs added to the Agent.
* **Allowed tools** — explicit tool allow-list.
* **MCP tools** — from connected MCP servers, if enabled globally.

## Skills

Add via the Agent editor. Each skill contributes its system-prompt fragment + preferred tools. Multiple skills stack.

## Tools

Toggle individual tools on/off. Default-allow for built-ins (query\_data, gmail\_\*, etc.); default-deny for integrations + MCP unless you've enabled globally.

## Scoping

Give an Agent only the tools it needs. A "sales-analyst" Agent probably shouldn't have `gmail_send_email`. Least-privilege reduces surprising side effects during runs.