One Calendar API. Every Provider.

Connect your application to any calendar in minutes. Supports Google Calendar, Exchange Calendar, iCal, Office 365/Outlook and more.


Sync Any Calendar With Your Application

The Nylas Universal Calendar API powers your application with a secure, reliable connection to your users’ calendars. Sync historic and live events into your application in real-time. Quickly and easily build front-end calendar UI with the Nylas Scheduler.

Get bi-directional calendar sync and full CRUD (create, read, update, delete) capabilities with Google Calendar, Exchange Calendar, calendars and the rest with just a few lines of code.


Integrate With Any Calendar

One Modern, RESTful API

Integrate any calendar into your app in minutes. Simple, safe, and secure.

Real-Time, Bi-Directional Calendar Sync

Sync calendars and applications with both historic and new events.

Create, Read, Update, and Delete Any Calendar Event

Full CRUD capabilities in your application for every synced calendar.

Save Yourself Multiple Sprints

Build support for every event type, from recurring events to auto-generated IMAP events with just a few lines of code.

Make Scheduling a Breeze

Enable appointment reminders, bookings, cancellations, and team-wide visibility into calendars.

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Thinking About Building Your Own Integration?

Calculate your savings with Nylas.


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Build Secure Connections to Your User’s Calendars

Security is our #1 priority — but don’t just take our word for it. Nylas is SOC 2 Certified, Privacy Shield certified, GDPR compliant, and HIPAA and FINRA ready. Data for every calendar you sync is encrypted and isolated with multi-level permission checks.

We give you full control over what data is accessed so your customers are always secure, and your product is always compliant.

Learn More
  • World-Class Security Certifications
  • Token Management
  • Whitelisted IPs
  • Data Encryption
  • Granular Authentication Scopes
  • Gated Permission Checks
Nylas calendar api for developers

The Calendar API Developers Can Rely On

New versions of our Calendar API don’t introduce breaking changes — they’re built for smooth updates. And all customers get a 99.9% guaranteed uptime and industry-leading support SLAs.

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How It Works


Ready to Start Building?


How do I get started with the Nylas Calendar API?

You can create a developer account with Nylas and sync up to 10 calendars from different users for free using the Nylas Calendar API here.

Where do I access the Nylas Calendar API key?

You can access the Calendar API key directly from your Nylas dashboard. One key unlocks access to any calendar provider in the world! Exciting, we know.

How do my users activate calendar sync?

Your users can kick-start full calendar sync simply by authenticating access. Your users will input their credentials and then be redirected back to your application.

What kinds of companies use the Nylas Calendar API?

Learn how customers in the CRM, ATS, automotive, finance, and legal industries use the Nylas Calendar API on our case studies page.

What languages can I use to connect to the Nylas Calendar API?

We provide SDKs that make it easy to integrate your app using Python, Node.js, Java, or Ruby, or you can use a different language of choice to connect to our RESTful API.

How is the Calendar API secured?

The Nylas Calendar API encrypts 100% of your data with military-grade security standards. In addition, Nylas is GDPR compliant, SOC 2 compliant, and HIPAA and FINRA ready.

What are the pricing options for the Nylas Calendar API?

You can sync up to 10 user’s calendars for free. After that, pricing is based on the number of accounts you have synced; you can view our pricing page for more details.

Additional questions about building your calendar integration?

Check out our comprehensive Getting Started Guide.