LobbyStack

MCP server

Manage your AI receptionist from the AI tools your team already uses

Check calls, book appointments and update your hours from Claude, ChatGPT or any MCP client. You approve what each assistant can do.

Try for freeRead the setup guide
  • Works in Claude, ChatGPT, Cursor, VS Code and any MCP client
  • Sign in with LobbyStack or use an API key
  • One business per connection, with the permissions you approve
  • Every change it makes goes in your audit log

Install

Server URLhttps://app.lobbystack.com/api/mcp
  1. 1Copy the server URL above.
  2. 2In Claude, open Customize > Connectors, click + Add, then Add custom connector. Name it LobbyStack, paste the URL and click Continue.
  3. 3Sign in to LobbyStack, pick your business and click Allow access. On Team and Enterprise, an owner adds the connector first under Organization settings > Connectors.
Read the full setup guide

Let your AI assistant set it up

Copy a prompt and paste it into your assistant. It reads our docs, shows you a plan, and stops when it needs you.

  • No coding

    Your assistant sets up a receptionist for your business or a friend's, and tells you when it needs you.

  • Add it to your product

    Build an AI receptionist into your SaaS through the API. Your customers stay in your UI.

  • Your logo and colors

    Your assistant sets up a white-label receptionist under your brand.

What it does

Give Claude and ChatGPT access to your calls and appointments

With the AI receptionist MCP server, your assistant works from the same calls, contacts and appointments as your dashboard.

Calls and messages

Ask who called and what they needed

Ask about yesterday and the assistant lists each call with its outcome, such as a message taken or a booking left unfinished. It opens a transcript when you want the details and shows the callbacks your team still owes.

Appointments

Book an open time from the chat

Name the customer, the service and the day. The assistant checks open times, offers a few, and books the one you pick. It cancels and reschedules too. If your receptionist takes booking requests instead, it tells you so and books nothing.

Tools

The tools your assistant gets

Your assistant sees only the tools its permissions allow. LobbyStack labels the read-only ones, and flags the tools that cancel, move or replace data so the assistant can ask you first.

Calls and messages

List calls newest first, open one call with its transcript, and read the messages your receptionist took for the team.
  • list_calls
  • get_call
  • list_messages

Contacts

Find people by phone, email or part of a name, open a contact, add one or change their details.
  • search_contacts
  • get_contact
  • create_contact
  • update_contact

Appointments

List appointments by status, time or customer, find open times over a span of up to 7 days, then book, cancel or reschedule.
  • list_appointments
  • get_appointment
  • check_availability
  • book_appointment
  • cancel_appointment
  • reschedule_appointment

Business and knowledge

Read your hours, services, staff and booking mode, replace the week's opening hours, and add an FAQ or text entry your receptionist answers from.
  • get_business
  • list_services
  • list_staff
  • update_business_hours
  • add_knowledge

For agencies

Run your white label clients from chat

If you resell LobbyStack under your own brand, connect the assistant to your partner instead of one business. Ask it to make a demo from a prospect's website, set up a client from a template on one of your packages, or invite a teammate. It acts with your role on the team.

  • Sign in and pick your agency on the consent page, or use a partner platform key
  • Tools for demos, client businesses, packages, templates, branding and your team, with billing for owners
  • Each client tool takes the business to work on, and reaches only your own clients
Read the agency guide

Questions about the MCP server

What is the LobbyStack MCP server?

It connects Claude, ChatGPT and other AI assistants to your LobbyStack AI receptionist. The Model Context Protocol server lives at https://app.lobbystack.com/api/mcp. Through it, an assistant reads a business's calls, messages, contacts and appointments, books and changes appointments, updates opening hours and adds FAQs. It speaks Streamable HTTP, and assistants sign in with OAuth or send an API key.

Which AI assistants work with it?

Claude (the web and Desktop connectors, Claude Code and the Claude API), ChatGPT, the OpenAI Responses API, Codex, Cursor and VS Code. Any client that supports Streamable HTTP can connect. Clients that only offer the older HTTP+SSE transport can't.

Is the MCP server included in my plan?

Yes. Every LobbyStack plan includes the MCP server, the Free plan too, at no extra cost.

Do I need a developer to set it up?

Not for Claude or ChatGPT. You paste the server URL, sign in to LobbyStack and allow access. ChatGPT supports custom MCP servers on Business, Enterprise and Education plans, and on Pro for read-only tools. Codex and Cursor sign in the same way after one command or config line.

Can the assistant do more than I allowed?

No. It works on the one business you picked and sees only the tools for the permissions you left checked. With an API key, the key's scopes decide the same way. Only owners and admins of a business can connect an assistant to it.

Can the assistant book appointments?

Yes, when Booking is set to Books appointments. If your receptionist takes requests instead, the booking tools return an error and the assistant tells you your team confirms requests from the inbox. If booking is off, it tells you that. Cancelling works in every mode.

How do I disconnect an assistant?

Go to Settings > API keys in LobbyStack and click Disconnect next to it under MCP connections. It loses access right away. For an assistant that uses an API key, revoke the key on the same page.

Can an agency connect to all of its clients at once?

Yes. If you resell LobbyStack under your own brand, sign in and pick your agency on the consent page, or use a platform key from the partner console. The assistant then makes demos, sets up client businesses from your templates and packages, and manages your team, with your role on the team. Each client tool takes the business to work on, and it reaches only your own clients.

Does it work with a self-hosted LobbyStack?

Yes. A self-hosted install serves the same path on its own domain, such as https://lobbystack.example.com/api/mcp. Claude and ChatGPT connect from the internet, so the install needs a public HTTPS address.

Is it the same as the WebMCP tools on lobbystack.com?

No. The website registers a few read-only WebMCP tools in the browser that describe LobbyStack's public pages, features and pricing. They never touch a business. The MCP server works on your own business's data after you sign in.

Is there a rate limit?

Yes, 120 requests per minute. Each tool call counts, and listing the tools doesn't. An API key shares that limit with its REST requests, and each OAuth connection has its own. Past the limit, the tool tells the assistant how many seconds to wait.

Connect your team's AI tools to your AI receptionist

Create a free LobbyStack account and set up your receptionist. Then add the server URL to Claude or ChatGPT and ask who called today.

Try for freeRead the MCP docs

No credit card required. Cancel anytime.