Here you connect your business's CRM, catalog or calendar with the AI agent, so it can use them as tools while chatting. This procedure is for **bringing your own server** ("Custom"): you provide the URL and the credential of an MCP server that already exists. It's the route for linking your own systems when a native connector doesn't exist yet (section 11). > **Note — Looking for the catalog of preconfigured servers?** > > Below this "MCP servers" block, the same Settings tab has a **"MCP server catalog"** with dozens of > already-verified providers (by key or by OAuth) — no need to know their technical URL. The full > procedure is in **Manual 60 · MCP servers: catalog and connection**; this manual only covers manual > registration (Custom). **Requirements:** Admin role; access credentials for the system you want to connect. 1. Go into **Settings → MCP servers**. 2. Tap **Register server**. 3. Fill in your system's connection details and, if you want to narrow down which agents can use it, add one or more **tags** (same mechanism as on documents and templates — Manual 23 · AI agents, section 6). 4. Confirm the setup. **Result:** the credentials you enter are saved **encrypted**; once connected, the tools that server exposes become available for any agent with access to that resource to use — "Access to everything", or one of its tags (Manual 23 · AI agents, section 6).