The Qualtrics Developer Platform documentation has a new home. Public API reference and Extension SDK guides are now at developer-docs.qualtrics.com, replacing the previous Stoplight-hosted site. All existing bookmarks redirect automatically — no action required on your end.

The previous site was hosted by Stoplight; this new site is self-hosted and will remain so going forward.

The first half of 2026 brought several meaningful updates to the Extension SDK: Purpose-Built Apps moved from early access to general availability, a new fetch3 API replaced fetch2 as the recommended way to make external requests, and the XM Solution plugin type gained support for a new Overview resource. Here's a rundown of what changed and what it means for your extensions.

Two notable updates to the Qualtrics Public API documentation landed in Q2 2026: the Response Imports/Exports API spec is live for the first time in roughly three years, and the full API surface is now formally documented with endpoint counts across all 46 OpenAPI specs.