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December 28, 2018

AccessGUDID is deprecating its V1 APIs and will no longer be available for use after March 31, 2020* (December 31, 2019).

*Update Dec'2019 - Based on customer feedback the date has been pushed back.

The new base URL for the web service is:

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.



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