# Lucie Sync Muse connector

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

## Lucie Sync

Find meeting times and book appointments while keeping your calendar private.

- Record: https://musedirectory.ai/connector/lucie-sync
- Category: Productivity
- Developer: Lucie (https://sync.lucie.network/docs)
- 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, 740ms, checked 2026-10-29T15:01:02Z
- Endpoint: https://sync.lucie.network/api/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-10-29T11:11:14Z)
- Source: Found in the official MCP Registry (network.lucie/sync) https://registry.modelcontextprotocol.io/v0/servers?search=network.lucie%2Fsync

Connects to Lucie Sync booking pages to check availability, book one-on-one meetings, and find group times when multiple people are free. Shows only open slots and booking rules, never raw calendar data. Requires participants to have Lucie booking pages.

Example request: "Find a time when both Alice and Bob are available next week and book a 30-minute meeting with them."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Lucie Sync to help me. It is a free service with an MCP server at https://sync.lucie.network/api/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- check_availability: Return the open meeting slots a Lucie Sync host offers, plus their booking rules (durations offered, minimum notice, how far ahead you can book, buffer between meetings). Returns only bookable slots and policy — never the host's raw calendar. Use this to find a time before propos
- book_meeting: Book a confirmed meeting on a Lucie Sync host's calendar at a specific start time. This is a real write: it creates a calendar event and emails both the host and the booker. Always call check_availability first and use one of the open slots it returns. Before calling, (1) show th
- find_group_times: Given several Lucie hosts (by @handle), return the meeting times when ALL of them are free — the intersection of their availability — for a meeting of the given length. Read-only: never books, never exposes anyone's raw calendar (only the shared open slots). Use it to propose a g
- create_group_event: Create a Lucie group event (a poll) for several participants, pre-filled with candidate times when everyone is free (the intersection of their availability). Returns a vote link to share: participants pick which proposed times work, and people WITHOUT a Lucie handle can vote manu
- book_group_meeting: Confirm a group meeting at a specific time across several Lucie hosts (by @handle), creating ONE shared Google Calendar event with everyone invited. YOU (the connector's owner) are the organizer and host the event on your calendar — no organizer handle needed. This is a real writ

Screening checks:
- MCP handshake: pass (Answered in 988ms)
- Domain against threat feeds (Cloudflare security DNS): pass (sync.lucie.network 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: pass (5 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)