> 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

# March 2021

## Personal access tokens are available for authenticating to API

Personal access tokens provide a simpler alternative to OAuth for authenticating API requests, ideal for server-to-server integrations and testing.

## Webhook signing keys supported for webhook subscriptions created with personal access tokens

Webhook subscriptions created with personal access tokens now support signing keys, enabling you to verify webhook payload authenticity.