An MCP server exposes a set of tools following the Model Context Protocol standard. You can connect one from Brain's curated catalog in a couple of clicks, or federate your own server from Tool Studio.
From the catalog
- Open Connections → Browse and find the server you need under Tools — these are MCP servers Brain has already verified and added to the catalog.
- Press Add connection.
- Depending on the server: some connect instantly with a single piece of information (for example, your store domain), no sign-in required; others take you through an OAuth sign-in to authorize access.
Your own server
If the service you want to integrate publishes its own MCP server, federate it from Connections → Tool Studio → MCP server:
- Tool name — how you'll identify it in Brain.
- MCP server URL — for example
https://your-mcp-server.com/mcp. - Choose the authentication method:
- Token / none — paste an optional access token; it's stored encrypted and sent as a bearer token.
- OAuth — Brain registers a client automatically and sends you to the server to authorize access. If the server doesn't support automatic client registration, you can paste the Client ID and Client Secret you pre-registered with the provider yourself.
- Accept the responsibility notice and press Connect (or Connect with OAuth).
Brain verifies the endpoint and lists the available tools before connecting.
Manage a connected server
Every server shows up under Your connections → Manage shows its status (Active or Discovery failed), the connection date, and the tools Brain discovered. If discovery fails, check that the URL is a reachable streamable-HTTP MCP endpoint, then remove and reconnect the server.
From there you also control permissions and per-digital-human access to the discovered tools.