Hapio

Headless booking and scheduling API for developers — add appointment management to any app without building backend logic.

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hapio.io

Verified API available Free tier

Quick facts
What is it	Headless booking and scheduling API for developers — add appointment management to any app without building backend logic.
Pricing	Freemium — from €29/mo
Free tier	Yes
Platform	API
API	Yes
Best for	adding booking functionality to web applications, creating custom scheduling interfaces for businesses
Domain registered	2021

Data updated Aug. 1, 2026

What does Hapio do?

Hapio is a developer-focused API platform that provides booking and scheduling infrastructure for applications. It handles the complex backend logic of appointment management, including resources, services, time zones, availability checks, and booking conditions. Developers can integrate Hapio into their applications using a RESTful API that works with any web technology stack that can process JSON.

The platform uses a headless architecture, which means developers have complete freedom to design their own user interfaces and workflows while Hapio manages the backend operations. It includes features like webhooks for real-time notifications, flexible API token permissions, and a developer portal for monitoring API usage. The serverless design automatically scales based on demand, ensuring reliable performance during peak booking periods.

Hapio is particularly useful for development teams building applications for healthcare, education, fitness, e-commerce, and various service industries that require appointment scheduling. It eliminates the need to build complex scheduling logic from scratch, allowing teams to focus on their core product features rather than backend infrastructure.

Backend-as-a-Service (BaaS/PaaS)

#appointment management#developer tools#rest api#scheduling#serverless#webhooks

Key features

What makes it stand out

RESTful API for scheduling and booking integration

White-label solution with full branding control

Serverless architecture for automatic scaling

Webhooks for all booking-related events

Developer portal with API logs and monitoring

Who is Hapio for?

Who benefits most from this tool

adding booking functionality to web applications

creating custom scheduling interfaces for businesses

building appointment management systems

Pricing

Free tier available — start without a credit card

Build

Free

2,500 requests
100 req/min rate limit
No credit card required
Up to 2 500 requests/mo
Rate limit: 100 req/min

Essential

€29.0/month

10,000 requests
250 req/min rate limit
0.0029 additional request price
10k requests included/mo
Rate limit: 250 req/min
€0.0029 per additional request

Grow

€249.0/month

100,000 requests
500 req/min rate limit
0.0029 additional request price
100k requests included/mo
Rate limit: 500 req/min
€0.0029 per additional request

Scale

€599.0/month

250,000 requests
1000 req/min rate limit
0.0029 additional request price
250k requests included/mo
Rate limit: 1 000 req/min
€0.0029 per additional request

Enterprise

Custom

Unlimited requests
Unlimited team members
Custom rate limits
Premier Support

Trust & presence

Domain Domain registered 2021

Gallery

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