v2 APIs


** Update July 2021 **

AccessGUDID v2 APIs are currently deprecated (no longer supported for bug fixes and enhancements) and will be removed after December 31, 2022.

December 28, 2018

AccessGUDID is deprecating its V2 APIs and will no longer be available for use after December 31, 2019.

The new base URL for the web service is: https://accessgudid.nlm.nih.gov/api/v2/

The V3 APIs are in production as of January 1, 2019.

If you are using our V2 web services, please update your code to use V3 by January 1, 2019. After that date, V2 APIs will no longer be supported in terms of bug fixes and enhancements. If you have questions about the switch to V3, please ask us via the NLM Support Center.

Developers v2 API