FeatureMay 2026
Contacts API and webhooks
Introduced a new Contacts API and webhook support, enabling developers to programmatically manage contacts and receive real-time event notifications.
apiwebhookscontacts
Calendly Changelog
Calendly — Scheduling, Productivity product updates and releases, tracked on megachangelog.
Feature2026.04
Create Event Invitee (Scheduling API)
New API endpoint added to the Scheduling API that enables creating event invitees, expanding programmatic scheduling capabilities.
apischedulingfeature
AnnouncementMarch 2026
Calendly MCP Server
Release of Calendly MCP Server for March 2026, enabling integration and automation capabilities for scheduling and calendar management.
mcpintegrationserverscheduling
FeatureMarch 2026
Authorization scopes for API access
Calendly API now supports fine-grained authorization scopes, allowing users to grant limited access permissions for API integrations rather than full account access.
apiauthorizationsecurityscopes
AnnouncementOctober 2025
Scheduling API - October 2025
October 2025 release of the Scheduling API introducing new capabilities and improvements to Calendly's API platform.
apischedulingrelease
FeatureJune 2025
APIs for creating and updating event types
New APIs now allow developers to programmatically create and update event types, enabling automated event type management through Calendly's API.
apievent-typesfeature
FeatureApril 2025
Locale added to Event Type information
Event Type details now include locale information, allowing better customization and localization of scheduling experiences.
event-typeslocalizationapi
Announcement2
Migrate to Calendly API v2
Calendly is requiring migration to API v2. Users must update their integrations to continue using the Calendly API.
apimigrationbreaking
FeatureMarch 2025
Get Organization API
Calendly has released a new Get Organization API endpoint, enabling integrations to retrieve organization information programmatically.
apiorganizationfeature
ImprovementFebruary 2025
Enhancement to List Organization Memberships
Improvements have been made to the List Organization Memberships functionality to enhance usability and performance.
apiorganizationsmemberships
FeatureOctober 2024
Language preference included in User information
User information endpoints now include language preference data, allowing applications to better localize content and communications for each user.
apiuser-datalocalizationintegration
FeatureOctober 2024
Kind included in Organization information
The Organization information now includes a Kind field to provide additional classification details about organization types.
apiorganizationdata
FeatureSeptember 2024
Duration options in the Create Share API
The Create Share API now supports duration options, allowing developers to specify event durations when creating shareable scheduling links.
apicreate-sharedurationschedulingfeature
FeatureJune 2024
New Page Resize Event Option for Embed
Embed now supports a new page resize event option, allowing developers to handle resize events when the embedded calendar changes dimensions.
embedfeaturecalendareventsapi
FeatureMay 2024
Introducing Groups API and Groups Scope
Calendly now offers a Groups API and Groups Scope, enabling developers to programmatically manage and access group scheduling functionality through the API.
apigroupsscheduling
ImprovementApril 2024
Enhancement to List User's Event Type to support Event Type permissions
The List User's Event Type API endpoint has been enhanced to support Event Type permissions, allowing better control over which event types users can access.
apievent-typespermissionsauth
FeatureMarch 2024
Enhanced Sign-Up Options on Developer Portal
Calendly has enhanced the sign-up options available on its Developer Portal to provide improved flexibility and functionality for developers integrating with the platform.
developer-portalsignupapideveloper-experience
AnnouncementMarch 2024
API Enhancements for Improved Product Experience
Calendly released API enhancements in March 2024 to improve the overall product experience for developers and users integrating with the platform.
apienhancementintegration
ImprovementFebruary 2024
API Accessibility Update
Calendly has updated its API to improve accessibility features and make it easier for developers to build inclusive integrations with the platform.
apiaccessibilityintegration
AnnouncementFebruary 2024
Updated Rate Limit on APIs for Free tier customers
Rate limits on APIs have been updated for customers on the Free tier, changing the API usage constraints for that plan level.
apirate-limitfree-tierannouncement
AnnouncementJanuary 2024
API Rate Limit for Free Tier Customers
API rate limits are now applied to customers on the Free billing tier to ensure fair resource usage across all users.
apibillingrate-limitsfree-tier
FeatureDecember 2023
Create Collective one-off meeting link API
Calendly has released an API that enables creating collective ad-hoc meeting links, allowing users to generate one-time meeting links for group meetings without the need for pre-scheduled events.
apimeetingscollectivefeature
FeatureDecember 2023
List Event Type Hosts API
Added a new API endpoint to list hosts for event types, enabling developers to retrieve and manage event type hosting information programmatically.
apieventshostsdevelopers
AnnouncementSeptember 2023
Rate Limit Implemented on Public APIs
Rate limiting has been implemented on Calendly's public APIs to protect service stability and prevent abuse. This ensures fair resource allocation across all users.
apirate-limitingpublic-apiinfrastructure
AnnouncementAugust 2023
Rate Limits
Calendly has implemented rate limits to protect API stability and ensure fair service usage across all users.
apirate-limitsreliability