FIRELY .NET SDK formerly .NET FHIR API

The official HL7 FHIR API in .NET  

Drive health interoperability and save precious development time with Firely’s open-source FHIR API 

FHIR API illustration

Get a running start to implementing FHIR the right way 

Fully compliant to the latest HL7 FHIR standard

Firely is the orginal author and main contributor of the official HL7 FHIR reference implementation API for Microsoft .NET.

Speed up implementation time

Download the NuGet packages of the API and you’ll have your first FHIR client running within an hour.

Open-source and trustworthy API

The open source library has been downloaded tens of thousands of times by developers around the world.

Lower the amount of coding for your team

Build your own FHIR client, server or add-on without having to implement all the basic and advanced FHIR features from scratch.

Key features

Unleash the power of your data 

FHIR API sample code
  • Serialization and deserialization to XML and JSON  
  • Snapshot generation, validation and caching 
  • Set up complex resource resolving scenarios  

Bring into play for Interoperability and Patient Access Rules

ONC Cures Act

Achieve stress-free compliance with
our FHIR Server, FHIR API and FHIR
training courses

CMS Final Rule

Implement a Patient Access API or
your FHIR API-based Provider
Directory with Firely

Trusted by leading companies and thousands of developers

Want to know more about the Firely .NET SDK? 

Get in touch for more information. 

Check out more products from our FHIR suite 

R ON FHIR

Easily run R scripts against your FHIR server for powerful research and analytics. 

TORINOX

Build automation pipelines with our cross-platform Command Line Tool for FHIR.

WIND TUNNEL

Test your FHIR Server and guarantee high-quality performance, one release after another. 

Find out how Firely can help you bring FHIR to life

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