Use a custom MCP connection

A custom MCP connection exposes tools from a server you choose. Use it when your required business system is not covered by an available standard connection and you understand who operates the server.

Open Apps → Add an app and use the custom connection option if available. Enter the requested server information, complete authentication, and review the tools the server exposes.

Keep tools off until you understand the data they receive and what they can change. Use owner-only access for tools customers should not trigger. Enable customer access only for narrowly appropriate actions and test with non-sensitive sample data.

If tool definitions change, review any new approval or sync requirements shown in the app. Reconnecting does not automatically make a tool appropriate for customer use.

For a failed call, capture the tool name, time, visible error and expected result. Do not include credentials in your support request. Your server provider may also need to investigate failures on its side.

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