# AddCal Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## AddCal

Publish calendars and events for others to subscribe to, RSVP, and add to their own calendars.

- Record: https://musedirectory.ai/connector/addcal
- Category: Productivity
- Developer: AddCal (https://addcal.co/documentation/mcp-server)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, sign-in needed, 249ms, checked 2026-09-28T09:16:10Z
- Endpoint: https://addcal.co/mcp
- Auth: Sign in with your account; Pricing: unknown
- Screening: Screened, no issues found (2026-09-24T09:26:08Z)
- Source: Found in the official MCP Registry (co.addcal/addcal) https://registry.modelcontextprotocol.io/v0/servers?search=co.addcal%2Faddcal

Connects to AddCal to let you publish public calendars and events. Muse can generate RSVP links, calendar feeds, and add-to-calendar links that others can use to subscribe to your events or add them to their own calendars.

Example request: "Create a public calendar for my team meetings and send an add-to-calendar link to attendees."

How to connect: AddCal is not in Muse's Connectors list yet, and it needs you to sign in with your AddCal account. Apps that need this kind of sign-in usually cannot be used from a Muse chat yet. Follow it here and we will tell you when it reaches Muse.

Screening checks:
- MCP handshake: pass (Requires sign-in (publishes OAuth metadata))
- Domain against threat feeds (Cloudflare security DNS): pass (addcal.co not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: n/a (Tools are behind sign-in)
- Inputs asking for passwords, card numbers or seed phrases: n/a (Tools are behind sign-in)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)