MCP servers

An MCP server (Model Context Protocol) is an external system that offers ready-made tools for your agents. Instead of creating one External API per operation, you register the server once and it publishes its own catalogue of tools.

There are two steps: registering the server in the solution and releasing it in the agent.

1. Register in the solution

Go to Settings → MCP Servers and click Add MCP Server.

Field	What to enter
Name	A label to identify the server across the screens
URL	The MCP server address
Credential	A credential delegated to this solution, when the server requires authentication
Enabled	Uncheck to turn the server off without deleting the entry
Advanced	Extra options, such as how returned content is handled and the result size limit

Once saved, the server appears in the tab’s list.

2. Release in the agent

Registering is not enough: each agent picks which of that server’s tools it may use. Open the agent editor and go to the MCP tab.

1. Enable the server for this agent.
2. Select the tools it may call — the selection can be partial.

Release only what the agent really needs. A released tool is a tool the agent can call, and too many options make the choice worse.

When something does not work

Symptom	Likely cause
The server lists no tools	Wrong URL, server down, or invalid credential
The agent does not use the tool	The server was not enabled on the agent, or the tool was not selected
A tool disappears after a server update	It was renamed on the other side; go back to the agent’s MCP tab and select the new name
The result arrives cut off	The result size limit, under Advanced

Renaming a tool breaks the selection

The selection is stored by the tool name. If the server renames one, the agent loses the tool silently — nothing fails, it simply stops existing for that agent. After any server update, check the MCP tab of the agents that use it.