FeatureJuly 2026
Notetaker API and webhooks
Introduced a new Notetaker API with webhook support, enabling integrations to capture and respond to note-taking events in real time.
notetakerapiwebhooksintegration
Calendly Changelog
Calendly — Scheduling, Productivity product updates and releases, tracked on megachangelog.
FeatureMay 2026
Contacts API and webhooks
Calendly has released a new Contacts API and webhook support, enabling developers to programmatically manage contacts and receive real-time event notifications.
apiwebhookscontactsintegration
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
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
Kind included in Organization information
The Organization information now includes a Kind field to provide additional classification details about organization types.
apiorganizationdata
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
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
FeatureMarch 2023
Edit OAuth Application Attributes
OAuth application owners can now edit application attributes after creation, enabling greater flexibility in managing OAuth app settings and metadata.
oauthapiappsadmin
FeatureMarch 2023
Customize event once and share feature API
Calendly released an API for the customize event once and share feature, enabling developers to programmatically create and manage customized event experiences.
apieventscustomizationfeature
FeatureFebruary 2023
Developer Portal Self Service App Management
Developers can now manage their apps directly through the developer portal, enabling self-service configuration and control without manual intervention.
developer-portalapp-managementself-serviceapi
FeatureFebruary 2023
Delete Scheduled Events Data
Added ability to delete scheduled events data. This feature allows users to manage and remove event records from their calendar system.
eventsdata-managementscheduling
FeatureNovember 2022
Identify Managed Event Types in Event Types list
The API now includes information to identify which event types are managed when returning the list of event types for a user, making it easier to distinguish between different types of events.
apievent-typesmanaged-events
FeatureOctober 2022
User Calendar Availability
Calendly now supports user calendar availability, allowing scheduling based on real-time calendar data to prevent double-bookings.
calendaravailabilityschedulingfeature
FeatureSeptember 2022
Activity Log API
Introduced the Activity Log API, enabling users to access and track system activity logs programmatically through Calendly's API infrastructure.
apiactivity-loglogging
FeatureJuly 2022
View and share available times for Event Types
Users can now view and share available times for a given Event Type, making it easier to see scheduling options and distribute availability information.
event-typesschedulingavailabilitysharing
FeatureJuly 2022
Routing Forms API and Webhook
Calendly released a new Routing Forms API and webhook functionality, enabling developers to programmatically manage routing forms and receive real-time notifications when forms are submitted.
apiwebhooksrouting-formsforms
FeatureApril 2022
Enable meeting cancellation with new Cancel Event API
Calendly released a new Cancel Event API that allows developers to programmatically cancel scheduled meetings, enabling meeting cancellation functionality through the API.
apieventscancellation
FeatureMarch 2021
Personal access tokens available for API authentication
Calendly now supports personal access tokens as an authentication method for API requests, providing a more secure alternative for programmatic access.
apiauthtokenssecurity
Improvement2022-03
Updated HTTP error code on Invite User to Org API endpoint
The HTTP error code and title response for the Invite User to Org API endpoint have been updated to provide more accurate error handling and clarity.
apiinviteerror-handlingorg
FeatureMarch 2022
Sync Invitee No-Show information
Calendly now syncs invitee no-show data across integrated systems, allowing you to track and manage no-show information in your connected platforms.
no-showsyncintegrationsdata
FeatureMarch 2022
Subscription creator URI now included in Webhook payload
The Webhook payload now includes the subscription creator URI, providing more complete context about who created a subscription when webhooks are triggered.
webhooksapipayloadsubscriptions
FeatureFebruary 2022
Filter Event Types by 'active' or 'inactive' status
Event Types can now be filtered by their active or inactive status, allowing users to more easily manage and organize their event type catalog.
event-typesfilteringmanagement
FeatureFebruary 2022
New 'cancellation' object in scheduled event endpoints
The scheduled event endpoints now include a new 'cancellation' object in their responses, providing additional details about event cancellations.
apieventsendpointresponse
Feature2021.02
Event type endpoint includes organization parameter
The event type endpoint now includes an organization parameter, allowing users to filter or specify event types by organization.
apievent-typesorganization
ImprovementApril 2021
Access tokens now contain more characters
Access tokens have been updated to contain more characters, providing increased security and token entropy for better protection.
securityapitokensauth
Feature2021.03
Webhook signing keys supported for personal access token subscriptions
Webhook signing keys are now supported for webhook subscriptions created using personal access tokens, improving security for webhook integrations.
webhookssecurityapisigningauth
FeatureFebruary 2021
Invitee model includes payment amount
The Invitee model now includes payment amount information, allowing you to access payment details directly from invitee records.
apiinviteepaymentsdata-model
FeatureJanuary 2021
Programmatically create single-use links
Calendly now allows developers to programmatically create single-use booking links via API, enabling more flexible scheduling workflows and controlled access to booking pages.
apilinksfeature
FeatureJanuary 2021
Event Resource includes additional guests
The Event Resource now includes additional guests in its response, allowing you to see all attendees associated with an event through the API.
apieventsguestsresource
FeatureJanuary 2021
Invitee model includes cancellation event
The Invitee model now includes a cancellation event, allowing better tracking and handling of cancelled meetings.
apiinviteeeventswebhooks
Feature2020.12
Scheduled events endpoint includes organization parameter
The scheduled events API endpoint now includes an organization parameter, allowing better filtering and organization of scheduled event data.
apieventsorganizationparameters
FeatureDecember 2020
Cancel and reschedule links in invitee resource
The invitee resource now includes cancel and reschedule links, allowing users to programmatically manage invitations with these operations.
apiinviteesscheduling
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