Open Referral

Open Referral

The Open Referral Initiative develops data standards and open platforms that make it easy to share and find information about community resources. Learn more about the initiative at

The Human Services Data Specification (HSDS) is the technical name for Open Referral’s core data format. HSDS is designed to support the publication of open, inter-operable resource directory data. About HSDS | schema | sample data

The Human Services Data API (HSDA) is the technical name for Open Referral’s OpenAPI protocol. HSDA provides a ‘blueprint’ for resource directory APIs. About HSDA | OpenAPI | reference implementation

Open Referral’s ecosystem includes a range of working open source software applications that can be freely redeployed to work with HSDS-compatible data and/or HSDA-compatible APIs. Many of these tools can be found in our Github organizaiton page.

Learn more about the why’s, how’s, and who’s of the Open Referral Initiative in our Public Documentation, and browse our Project Documents on Google Drive

Join Open Referral’s Community of Practice


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