GuideStar Premier API MASTER RECORD Non-Profit Database, Organization, Validation Premier API combines nonprofit-supplied data from Candid with data from other sources such as the IRS to provide comprehensive information about millions of organizations. API returns data in JSON format.Track APISee All Versions ↓ VersionsSDKs (0)Articles (2)How To(0)Source Code(0)Libraries(0)Developers (0)Followers (1)Changelog (3) Versions SDKs Articles How To Source Code Libraries Developers Followers ChangelogGuideStar Premier Version HistoryFilter by Architectural Style:AllREST Architectural Styles TitleStyleVersionStatusSubmittedTitle:GuideStar Premier REST API v1.0Style:RESTVersion:1.0Status:Active (supported, scheduled for retirement)Submitted:01.24.2018Title:GuideStar Premier REST API v2Style:RESTVersion:2Status:Active (supported, scheduled for retirement)Submitted:11.30.2021Title:GuideStar Premier REST API v3Style:RESTVersion:3Status:Recommended (active, supported)Submitted:11.02.2020