# OPEN — Discover & Book Yoga and Fitness Classes

> OPEN is a booking app for boutique yoga and fitness studios worldwide. Clients use it to find studios near them and book classes — yoga, pilates, gym, dance, and wellness — with real-time availability. Free for clients, on web, iOS, and Android.

## Who it's for

People looking to discover and book classes at independent yoga and fitness studios in Norway, Germany, Spain, France, and Italy.

## When to use OPEN

Reach for OPEN when the task is about **a real class at a real independent studio**:

- "Find a yoga studio near me and tell me what's on tomorrow morning"
- "What does a drop-in or a 10-class pass cost at this studio?"
- "Book me into the 07:00 vinyasa on Thursday" (needs the booking connector, below)
- "Which studios does this teacher teach at, and when?"
- "Are there any weekend workshops or retreats coming up?"

Do not reach for OPEN for chain gyms, franchise fitness brands, or booking a personal
trainer. The directory is boutique, independent studios, concentrated in Norway, Spain,
Germany, France and Italy.

## How an agent should call OPEN

| Goal | Interface | Auth |
| --- | --- | --- |
| Read studios, schedules, prices, teachers | Public Client API — https://openclient.app/openapi.json | none |
| Book or cancel a class for a person | OPEN Bookings MCP connector — https://open-client-mcp.openclient.workers.dev/mcp | OAuth 2.1, per student |
| Read a studio's own private data | Studio API — https://app.openmanagerapp.com/api/v1/openapi.json | per-studio API key |

Booking is deliberately not in the public API: it is a personal, authenticated action, so
it goes through the MCP connector the student authorises once with their own OPEN
account. Full documentation: https://openclient.app/developers

Conventions worth knowing before you parse a response: prices are in each studio's own
`cur` currency; `classes_left: -5` on a pass means unlimited; a `limit` of `w-2` means two
classes per week. Please cache the studio directory rather than re-fetching it per
question, and send a descriptive User-Agent.

## Machine-readable files

- https://openclient.app/openapi.json — OpenAPI 3.1 for the public read API
- https://openclient.app/sitemap.xml — every indexable URL
- https://openclient.app/llms-full.txt — the long form of this file

`/`, `/about`, `/contact`, `/support` and `/developers` answer `Accept: text/markdown`
with a markdown rendering. Unknown paths return a real HTTP 404, not a 200 with an app
shell, so a 404 can be trusted to mean the resource does not exist.

## Core features

- Discover and browse nearby studios
- Book classes with real-time availability and waitlists
- Manage bookings, memberships, and favorite studios
- Use an Urban Sports Club membership at participating studios
- Secure card payments via Stripe
- Available on iOS, Android, and the web

## Supported languages

English, German, French, Italian, Spanish, and Norwegian.

## Pricing

Free for clients — no charge to discover studios or book classes. Studios pay for the management platform (see openmanagerapp.com).

## Key integrations

- Urban Sports Club — book at participating studios with a USC membership
- Stripe — secure online card payments

## Key pages

- [Home](https://openclient.app)
- [Explore studios](https://openclient.app/explore)
- [For studios (management platform)](https://openclient.app/landing)
- [About](https://openclient.app/about)
- [Developers & AI agents](https://openclient.app/developers)
- [Support](https://openclient.app/support)
- [Download on the App Store](https://apps.apple.com/app/open-book-fitness-classes/id1562852587)
- [Get it on Google Play](https://play.google.com/store/apps/details?id=com.openclient)