> Calendly developer docs. For page Markdown, append .md to any URL.
> Index: https://developer.calendly.com/llms.txt
> API catalog: https://developer.calendly.com/.well-known/api-catalog
> OpenAPI: https://developer.calendly.com/openapi/calendly-api.yaml
> OAuth authorization server: https://calendly.com/.well-known/oauth-authorization-server
> MCP protected resource: https://mcp.calendly.com/.well-known/oauth-protected-resource
> Scheduling MCP endpoint: https://mcp.calendly.com
> Docs search MCP: https://developer.calendly.com/_mcp/server

# Changelog

## Entries

- [August 25, 2026](https://developer.calendly.com/release-notes/2026/8/25.md): Contact custom fields API and webhooks
- [July 22, 2026](https://developer.calendly.com/release-notes/2026/7/22.md): Notetaker API and webhooks
- [July 9, 2026](https://developer.calendly.com/release-notes/2026/7/9.md): Event Type Available Times: max date range extended to 31 days
- [May 27, 2026](https://developer.calendly.com/release-notes/2026/5/27.md): Contacts API and webhooks
- [April 15, 2026](https://developer.calendly.com/release-notes/2026/4/15.md): Create Event Invitee (Scheduling API)
- [March 11, 2026](https://developer.calendly.com/release-notes/2026/3/11.md): Calendly MCP Server
- [March 3, 2026](https://developer.calendly.com/release-notes/2026/3/3.md): Authorization scopes for API access
- [October 15, 2025](https://developer.calendly.com/release-notes/2025/10/15.md): Scheduling API
- [June 4, 2025](https://developer.calendly.com/release-notes/2025/6/4.md): APIs for creating and updating event types
- [April 25, 2025](https://developer.calendly.com/release-notes/2025/4/25.md): Locale added to Event Type(s) information
- [March 26, 2025](https://developer.calendly.com/release-notes/2025/3/26.md): ACTION REQUIRED: Migrate to Calendly API v2
- [March 8, 2025](https://developer.calendly.com/release-notes/2025/3/8.md): Get Organization API
- [February 28, 2025](https://developer.calendly.com/release-notes/2025/2/28.md): Enhancement to List Organization Memberships
- [October 17, 2024](https://developer.calendly.com/release-notes/2024/10/17.md): Language preference and Kind in Organization information
- [September 21, 2024](https://developer.calendly.com/release-notes/2024/9/21.md): Duration options in the Create Share API
- [June 11, 2024](https://developer.calendly.com/release-notes/2024/6/11.md): New Page Resize Event Option for Embed
- [May 3, 2024](https://developer.calendly.com/release-notes/2024/5/3.md): Introducing Groups API and Groups Scope
- [April 17, 2024](https://developer.calendly.com/release-notes/2024/4/17.md): Enhancement to List User's Event Types
- [April 3, 2024](https://developer.calendly.com/release-notes/2024/4/3.md): Enhanced Sign-Up Options on Developer Portal
- [March 6, 2024](https://developer.calendly.com/release-notes/2024/3/6.md): API Enhancements for Improved Product Experience
- [February 28, 2024](https://developer.calendly.com/release-notes/2024/2/28.md): API Accessibility Update
- [February 8, 2024](https://developer.calendly.com/release-notes/2024/2/8.md): Updated Rate Limit on APIs for customers on Free tier
- [January 3, 2024](https://developer.calendly.com/release-notes/2024/1/3.md): API Rate Limit for customers on Free Billing Tier
- [December 5, 2023](https://developer.calendly.com/release-notes/2023/12/5.md): Collective one-off meeting links and List Event Type Hosts API
- [September 20, 2023](https://developer.calendly.com/release-notes/2023/9/20.md): Rate Limit Implemented on Public APIs
- [August 31, 2023](https://developer.calendly.com/release-notes/2023/8/31.md): Rate Limits
- [March 30, 2023](https://developer.calendly.com/release-notes/2023/3/30.md): Edit OAuth Application Attributes
- [March 1, 2023](https://developer.calendly.com/release-notes/2023/3/1.md): Customize event once and share feature API
- [February 28, 2023](https://developer.calendly.com/release-notes/2023/2/28.md): Developer Portal Self Service App Management
- [February 8, 2023](https://developer.calendly.com/release-notes/2023/2/8.md): Delete Scheduled Events Data
- [November 18, 2022](https://developer.calendly.com/release-notes/2022/11/18.md): Identify Managed Event Types
- [October 20, 2022](https://developer.calendly.com/release-notes/2022/10/20.md): User Calendar Availability
- [September 7, 2022](https://developer.calendly.com/release-notes/2022/9/7.md): Activity Log API
- [July 26, 2022](https://developer.calendly.com/release-notes/2022/7/26.md): View and share available times for a given Event Type
- [July 8, 2022](https://developer.calendly.com/release-notes/2022/7/8.md): Routing Forms API and Webhook
- [April 27, 2022](https://developer.calendly.com/release-notes/2022/4/27.md): Cancel Event API
- [March 30, 2022](https://developer.calendly.com/release-notes/2022/3/30.md): Updated HTTP error code on Invite User to Org API
- [March 27, 2022](https://developer.calendly.com/release-notes/2022/3/27.md): Sync Invitee No-Show information
- [March 6, 2022](https://developer.calendly.com/release-notes/2022/3/6.md): Subscription creator URI in Webhook payload
- [February 27, 2022](https://developer.calendly.com/release-notes/2022/2/27.md): Filter Event Types by status
- [February 23, 2022](https://developer.calendly.com/release-notes/2022/2/23.md): Cancellation object in scheduled event responses
- [April 23, 2021](https://developer.calendly.com/release-notes/2021/4/23.md): Access tokens now contain more characters
- [March 2021](https://developer.calendly.com/release-notes/2021/3/1.md): Personal access tokens and webhook signing keys
- [February 21, 2021](https://developer.calendly.com/release-notes/2021/2/21.md): Invitee model includes payment amount
- [February 8, 2021](https://developer.calendly.com/release-notes/2021/2/8.md): Event type endpoint includes organization parameter
- [January 17, 2021](https://developer.calendly.com/release-notes/2021/1/17.md): Programmatically create single-use links
- [January 13, 2021](https://developer.calendly.com/release-notes/2021/1/13.md): Event Resource includes additional guests
- [January 4, 2021](https://developer.calendly.com/release-notes/2021/1/4.md): Invitee model includes cancellation event
- [December 25, 2020](https://developer.calendly.com/release-notes/2020/12/25.md): Scheduled events endpoint includes organization parameter
- [December 8, 2020](https://developer.calendly.com/release-notes/2020/12/8.md): Cancel and reschedule links in invitee resource