For AI agents: a documentation index is available at the root level at /llms.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
Skip to navigation
New response field:
- app_url – Every Contact returned by GET /contacts, GET /contacts/{contact_uuid}, POST /contacts, and PATCH /contacts/{contact_uuid} now includes
app_url, a link for an authorized Calendly user to open the contact in the Calendly web app (e.g. https://calendly.com/app/contacts/{contact_uuid}). Opening it requires authentication and access to the contact. This is a response-only addition.
Documentation correction: currency custom fields
currency custom field values are amounts in the field definition’s currency, not integer minor (cent) units. For example, send 85000 for $85,000.00, not 8500000. The August 25, 2026 entry and earlier reference docs described minor units. If you followed them, your integration may be writing values 100x too large; review any currency values you have written.
single_select custom fields accept labels:
- On POST /contacts and PATCH /contacts/{contact_uuid}, a
single_select value can be either an option uuid or an option label.
- Label matching is exact and case-sensitive. If more than one option has the same label, a label value is rejected; send the option
uuid instead.
- An invalid
single_select value returns an error that lists the field’s valid options.