Use besummoned in Claude & ChatGPT

besummoned ships as a plugin (an MCP connector) for AI assistants. Connect it once, and planning a gathering becomes one sentence in chat: your assistant creates the event page and hands you the invite link right there. No account needed, ever.

This is the connector URL both assistants ask for:

Add to Claude

Works on claude.ai and in the Claude desktop app, on every plan, including the free one.

1
Open Customize → Connectors in Claude.
2
Choose Add custom connector, paste the connector URL above, and click Add.
3
In a chat, open the + menu, make sure besummoned is enabled under Connectors, and ask for your first event.

On Team and Enterprise plans an Owner adds the connector first, under Organization settings → Connectors.

Add to ChatGPT

Custom connectors in ChatGPT require developer mode, available on Plus, Pro, Business, Enterprise and Edu plans on the web.

1
In ChatGPT, open Settings → Apps & Connectors → Advanced settings and turn on Developer mode.
2
Back in Apps & Connectors, choose Create. Name it besummoned, paste the connector URL above as the MCP server URL, and pick No authentication.
3
In a chat, open the + menu, select Developer mode, enable besummoned, and ask for your first event.

On Business and Enterprise workspaces an admin has to allow developer mode first, under Workspace settings → Permissions & Roles.

Then just say what you're planning

“Pizza and board games at my place Friday 7pm, make an invite”

“Set up a hike from Fløyen Saturday at 10, max 12 people”

“Move my game night to 8pm and add the address”

The assistant answers with the invite link, ready to share anywhere. It can also update details, manage the guest list, or cancel the event later in the same chat. Guests don't need the plugin at all; the link opens a normal event page. But if they have it, they can paste an invite link into their own assistant and RSVP from chat.

Along with the invite link you get a claim link. Open it once in your browser and the event shows up under Your Events, so you can manage it from the website too.

Prefer the web?

Everything works without an assistant as well. Create an event right here; two fields is enough.