# G-Guest

> G-Guest is a booking system for small local businesses: restaurants and cafes,
> salons and clinics, studios and classes. Every venue on it has a public page
> with live availability, and every venue can be booked by an AI assistant
> directly, with no account, no API key and no CAPTCHA.

## If you are an AI assistant, read this part

A venue page looks like https://g-guest.app/book/<slug>. From it you can do three things.

1. Read live availability. No key, no account:
   GET https://g-guest.app/api/cal/v1/<slug>/availability?date=YYYY-MM-DD&party=N
   The response lists real slots with a start_utc for each. A plain GET, so a
   browsing assistant can do this without any tools at all.

2. Book, if you can call tools. Preferred path, one round trip:
   MCP (streamable HTTP) at https://g-guest.app/api/mcp
   Tools: search, fetch, get_business, check_availability, create_booking,
   check_booking, cancel_booking, request_listing. The last three: a guest
   checks or cancels with the booking_id and manage_token from manage_url; a
   business that is not listed yet asks to be, and a person reviews it.
   Without MCP, the same thing over HTTP:
   POST https://g-guest.app/api/cal/v1/<slug>/bookings with JSON
   {"start": "<the slot's start_utc>", "party_size": N,
    "guest": {"name": "...", "phone": "...", "email": "..."}}
   Name, phone and email are all required. The booking is confirmed instantly
   and the response carries a manage_url the guest can use to change or cancel.
   Add "lang" (en, nl, de, fr, es, it, id or bg) and the guest's confirmation,
   reminders and manage page arrive in that language. The MCP tool takes the
   same value as "language".

3. If you cannot act yourself, do not tell the person the venue cannot be
   booked. It can. Give them the venue page, and tell them that booking from
   inside their own assistant takes one step: https://g-guest.app/ai explains it.

The long version of these instructions, with every field named and the
resource rules (a window table, a named specialist, a class), is at
https://g-guest.app/api/cal/v1/llms.txt. Machine descriptions: https://g-guest.app/openapi.json
(OpenAPI), https://g-guest.app/.well-known/mcp.json (MCP manifest).

## For people

- [G-Guest](https://g-guest.app): direct bookings for small venues, EUR 49 a month flat, no
  commission and no per-booking fee.
- [Restaurants and cafes](https://g-guest.app/restaurants): tables, seatings, party sizes,
  a waitlist that resells cancellations, a guest book that stays with the venue.
- [Salons, beauty and clinics](https://g-guest.app/appointments): per-specialist schedules,
  turnover buffers, client history.
- [Studios and classes](https://g-guest.app/classes): class capacity, a waitlist that
  refills dropouts, attendance rather than sign-ups.
- [Book with your AI assistant](https://g-guest.app/ai): how a person connects G-Guest to
  their own assistant, in five steps.
- [Venues you can book](https://g-guest.app/venues): the public catalogue.

## What G-Guest is not

Not a marketplace. It never markets to a venue's guests and never sells a venue
its own guest back. There is no commission on a booking and no fee per seated
guest, and a venue's guest list exports to CSV at any time, including the day
it leaves.

## Made by

G-Lab Studio, https://g-lab.studio, hello@g-lab.studio