# Gaplessly Public booking (appointments) API

**Canonical:** https://apis.io/apis/gaplessly-com/gaplessly-com-public-booking-appointments-api/  
**Provider:** Gaplessly — https://apis.io/providers/gaplessly-com/  
**Base URL:** https://gaplessly.com  
**Documentation:** https://gaplessly.com/docs/api-reference

Gaplessly Public booking (appointments) API is one of 7 APIs that [Gaplessly](https://apis.io/providers/gaplessly-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Public booking (appointments). The published artifact set on APIs.io includes an OpenAPI specification.

No authentication. Find free appointment times at a business and book one, the same calls its booking page at /book/{slug} makes.

## Operations (5)

| Method | Path | Summary |
|---|---|---|
| POST | `/api/book/{slug}/appointment-waitlist/{token}` | Take yourself off the waitlist |
| GET | `/api/book/{slug}/availability` | List bookable appointment slots |
| POST | `/api/book/{slug}/appointment-waitlist` | Join the waitlist for a full day (public, appointments) |
| POST | `/api/book/{slug}/appointments` | Book an appointment |
| POST | `/api/book/{slug}/promo-codes/validate` | Preview a promo code |

## Machine-readable artifacts (1)

- **OpenAPI** — https://artifacts.apis.io/gaplessly-com/openapi/gaplessly-com-public-booking-appointments-api-openapi.yml

## Other Gaplessly APIs (6)

- [Gaplessly Agent (MCP) API](https://apis.io/apis/gaplessly-com/gaplessly-com-agent-mcp-api/)
- [Gaplessly Appointments engine API](https://apis.io/apis/gaplessly-com/gaplessly-com-appointments-engine-api/)
- [Gaplessly Guest self-service API](https://apis.io/apis/gaplessly-com/gaplessly-com-guest-self-service-api/)
- [Gaplessly Hospitality engine API](https://apis.io/apis/gaplessly-com/gaplessly-com-hospitality-engine-api/)
- [Gaplessly Public booking (hospitality) API](https://apis.io/apis/gaplessly-com/gaplessly-com-public-booking-hospitality-api/)
- [Gaplessly Shared API](https://apis.io/apis/gaplessly-com/gaplessly-com-shared-api/)

## Tags

Public booking (appointments)

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/gaplessly-com/gaplessly-com-public-booking-appointments-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/gaplessly-com/.