An App is an extension that gives an Agent extra capabilities — extra tools to call, custom screens, or connections to external systems.
Where to find this: open the Agent → kebab menu (⋯, top-right) → Agent Settings → Tools
Installed Apps
The Tools screen lists every App available on this Agent as a card. Each card shows the App's name and a short description. If an App provides an admin configuration page, the card is clickable — opening it takes you to the App's own configuration UI.
Apps are installed at the platform level by a system administrator. As an Agent builder you can enable them per Agent, but you cannot install new Apps yourself.
The set of Apps you see depends on what your administrator has installed and what your Space has access to. If an App you expected is missing, ask your administrator.
MCP servers
Below the Apps list is the MCPs section.
Add a Model Control Protocol (MCP) server to the agent to enable tool calling.
An MCP server gives the Agent access to a remote set of tools defined by the Model Context Protocol. Click Add MCP to pick a server from the catalog or add your own by URL.
See MCP servers for the step-by-step guide and the directory of supported servers.
How Apps surface in chat
When a user talks to an Agent that has Apps enabled, the Apps show up in three ways:
- Mid-reply tool calls — the Agent calls an App's tool and shows the result inline.
- Custom screens — Apps that ship their own UI appear as inline items, or grouped under an Apps dropdown, in the chat top bar (see Chat).
- Prompt Library entries — Apps can register prompt templates, which appear alongside hand-authored prompts in the Prompt Library.
Standalone Apps
Some Apps run full-page and aren't tied to a single Agent. When you've been granted access to one, it appears under the sidebar Apps item (top level) and opens on its own page at /apps. These behave like mini-applications inside SAALT rather than tools an Agent calls.
Developer reference
If you're building your own App rather than configuring an existing one, the developer documentation lives under Apps overview.