The Most Powerful Calendar API for Your Application


Power Your Application with Calendar Connectivity has a number of different APIs, services and templates that serve one purpose — helping developers build software applications that can integrate with calendars.

If you’re building a software that needs calendar connectivity with, note that while the APIs, services, and templates are meant to help you build the integration, they often end up causing more dependencies than solutions. The onus is on the developer to account for’s product changes and API modifications across every calendar platform their application supports.

The Nylas Calendar API abstracts away all of the complexity of building an an app that integrates with calendars, and handles all product changes and API modifications so you don’t experience outages or service disruptions.

Nylas streamlines calendar synchronization, and even integrates with every other email service provider’s calendar, giving you a dependable API that intelligently adapts to any changes, ensuring your calendar sync always works.

A Better Way to Integrate with the Calendar API

The Nylas Calendar API acts as a universal API, connecting your code and your software application to any user’s Calendar via a simple oAUTH. Instead of building out custom solutions for different calendar platforms, you can integrate with Nylas once and sync forever.

The Nylas Calendar API gives you more articulated control of your scheduling and calendar sync, allowing you to iterate your application easily.

With Nylas, you don’t have to build your calendar integration from scratch. Nylas offers a suite of SDKs to get you started quickly so you can spend more time iterating features to your users’ exact specifications.

Using the API, you have full CRUD capabilities through powerful API primitives. Nylas lets you fetch and filter data pertaining to calendar events via simple API endpoint parameters.



const Nylas = require('nylas');   Nylas.config({ appId: APP_ID, appSecret: APP_SECRET, });   var nylas = Nylas.with(ACCESS_TOKEN);{in:'inbox'}).then(count => { console.log('There are ${count} events in your inbox.'); });


from nylas import APIClient   nylas_client = APIClient(APP_ID, APP_SECRET, token) for event in, limit=5): print(event.title)


require 'nylas',app_secret:APP_SECRET, access_token:ACCESS_TOKEN)"Hello!").each do |event| puts event.title end
outlook calendar

The Gold Standard in Calendar APIs

At Nylas, we built a Calendar API that integrates with to be both intuitive and powerful so you can ship calendar connectivity in minutes, not months.

The Nylas Calendar API was built by developers, for developers, allowing you to share team calendars, link to specific meetings, schedule recurring meetings, and more.

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It took Fountain one internal hackathon, one engineer, and the Nylas Calendar API to build the scheduling feature they had in mind, uniting users’ calendars regardless of their calendar platform.

Nylas is the fastest way to get interoperability with all of the different calendar providers. We went from idea to execution in a couple days.”

Dan Taylor
Product Manager at Fountain

Fountain is the leading mid-market and enterprise Hiring Platform for Hourly Workers, built for speed and scale, that is backed by over $11M in venture capital.

Ready to get started?


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 granting Nylas access to their account. 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 language is the Nylas Calendar API built on?

Python! We love Python at Nylas; it’s reliable and robust, just like our Calendar API itself.

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 users' calendars for free for 30 days. 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.