AccessGUDID V1 APIs are currently deprecated (no longer supported for bug fixes and enhancements) and will be removed after December 31, 2021.
December 28, 2018
AccessGUDID is deprecating its V1 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 V2 APIs are in production as of January 1, 2019.
If you are using our V1 web services, please update your code to use V2 by January 1, 2019. After that date, V1 APIs will no longer be supported in terms of bug fixes and enhancements. If you have questions about the switch to V2, please ask us via the NLM Support Center.