Calendly’s APIs let developers embed scheduling into tools, workflows, and products without the heavy lifting.

From syncing event data and triggering workflows with webhooks to booking meetings through the Scheduling API, you can build smarter scheduling experiences that fit your users’ needs.

Today, Calendly’s API platform includes:

• Scheduling API

• API v2

• Webhooks

• JavaScript embed

Let’s walk through what you can do with each one.

Scheduling API

The Scheduling API makes it possible to create new Calendly events programmatically. Using the Create Event Invitee endpoint, your users can book meetings on behalf of their invitees directly from your apps and workflows — no redirects, iframes, or Calendly UI required.

Here’s how the Scheduling API works behind the scenes:

• Invitee details, time selection, and custom questions are captured through the API

• Calendly completes the booking just like any other event

• Standard Calendly actions — like calendar invites, reminders, Workflows, and notifications — are automatically triggered

The Scheduling API lets you build booking flows that feel fully native but are powered by Calendly’s scheduling infrastructure. Unlock AI-powered scheduling use cases like AI agents, workflow automations, and more.

Calendly users must be on a paid plan to access or use applications with the Scheduling API.

Build AI-powered scheduling experiences

With the Scheduling API, you can empower AI voice agents, texting or SMS platforms, chatbots, or other AI assistants to suggest times and book meetings on behalf of your users’ invitees.

The Scheduling API makes it possible to build apps and integrations that:

• Connect Calendly scheduling to AI chatbots, voice agents, sales assistants, and more.

• Reduce end-user scheduling drop-offs by handling the full booking flow within the AI interaction.

• Maintain all the benefits of Calendly’s platform, like automated reminders, calendar invites, and workflows — without needing to build them yourself.

For example, an AI agent can chat with a lead, qualify them, and, using the Scheduling API, instantly schedule a meeting — turning conversations into booked meetings for users.