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API catalogue

First time here? Check out Getting Started with NHS Digital APIs.

These are the APIs which are currently available, or in development, from NHS Digital. It includes API standards defined by us. If you're looking for other standards or reference materials, try our Developer A-Z

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Include retired APIs


Interoperability Toolkit Messaging HL7 V2 API standards

API standards for a set of messaging components using HL7 V2.

Messaging API Standard