/dashboard/mcp-connections); its tools are
discovered automatically and can be attached to any agent.
ThunderPhone connects to MCP servers over Streamable HTTP — that is
the only supported transport, so the server must be reachable at an HTTP
URL (stdio-only local servers won’t work).
Add a server
1
Click Add server
Give the server a name and its URL (for example
https://example.com/mcp).2
Add headers if the server needs them
Add any static HTTP headers the server requires — typically an
Authorization header. Header values are write-only in the UI: when
you edit the server later, leave a value blank to keep the existing
one.3
Save and sync
Saving immediately synchronizes the server’s tool list. The server
card shows every discovered tool by name; if none appear, the server
responded but advertised no tools.
Manage servers
Each server card shows its URL and cached tool list, with controls to:- Enable/disable the server without deleting it.
- Sync tools — re-fetch the tool list after the server changes.
- Edit the name, URL, or headers.
- Delete the server.
Tool lists are cached from the last sync. If you add or change tools on
your server, click Sync tools so agents see the new set.
Attach it to an agent
A connected server does nothing until an agent uses it. Open the agent in the builder (Build an agent) and attach the server in its MCP section — the server’s tools then become callable during that agent’s conversations.Next steps
API connections
A single HTTP endpoint as an agent function — no MCP server needed.
Connect apps
Prebuilt Google, Slack, HubSpot, Salesforce, and Cal.com tools.