Firely

aid: firely-server
name: Firely
description: >-
  Firely is an Amsterdam-based health IT company and one of the original
  co-developers of the HL7 FHIR (Fast Healthcare Interoperability Resources)
  specification. Co-founded by Ewout Kramer and Martijn Harthoorn (both
  long-time HL7 FHIR core team members), Firely builds the canonical FHIR
  toolchain used by payers, providers, health authorities, and digital health
  vendors worldwide. The Firely platform is anchored by Firely Server (formerly
  Vonk) — a certified production-grade FHIR server with native support for
  MongoDB and SQL Server, deployable on Windows, Linux, macOS, Docker, and
  Kubernetes across on-premise, Azure, AWS, and Google Cloud. Firely Server is
  G10, ONC, and ISiK certified and supports SMART on FHIR, Bulk Data, CDS
  Hooks, Subscriptions, Terminology Services, and FHIR Mapping. The product
  family also includes Simplifier.net (the global FHIR profile registry and
  package server hosting ~9,000 projects, 40,000+ profiles, and 1,600+
  implementation guides), Forge (FHIR profile editor), Firely Terminal
  (command-line FHIR tool with FQL/FSH/FHIRPath support), the open-source
  Firely .NET SDK (the de-facto reference C# FHIR library), the firely-cql-sdk
  for Clinical Quality Language, the Firely Validator API, FHIR Facade, Firely
  Server Ingest, and Firely Auth. Customers include UCSF, Humana, Roche, NHS,
  Opala, and the World Health Organization. Firely does not operate a hosted
  multi-tenant FHIR-as-a-service offering with a public REST endpoint;
  customers run Firely Server in their own environments. The public developer
  surface is therefore the Firely software products (Firely Server, .NET SDK,
  Terminal), the Simplifier.net package and registry APIs, and the open HL7
  FHIR REST API contract that every Firely Server instance implements.
tags:
  - FHIR
  - HL7
  - Healthcare
  - Health IT
  - Interoperability
  - Clinical Data
  - FHIR Server
  - Vonk
  - Simplifier
  - Forge
  - Terminology
  - SMART on FHIR
  - Bulk Data
  - CDS Hooks
  - Implementation Guides
  - .NET SDK
  - CQL
  - Profile Registry
kind: contract
position: Provider
access: 3rd-Party
image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/firely-server/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.20'
apis:
  - aid: firely-server:simplifier-package-api
    name: Simplifier.net FHIR Package API
    description: >-
      The Simplifier.net FHIR Package API serves every publicly published FHIR
      package — including packages from Simplifier.net, HL7 International, and
      other public feeds — and is the package backbone of the FHIR Registry at
      registry.fhir.org. Endpoints follow an NPM-compatible layout
      (`/{package-name}/-/{package-name}-{version}.tgz`) plus FHIR-specific
      catalog search by canonical URL, FHIR version, and package metadata.
      Public packages require no authentication; private feeds use JWT tokens
      from api.simplifier.net/token.
    humanURL: https://docs.fire.ly/projects/Simplifier/features/api.html
    baseURL: https://packages.simplifier.net/
    tags:
      - FHIR
      - Packages
      - Registry
      - Implementation Guides
      - Profiles
      - NPM
    properties:
      - type: Documentation
        url: https://docs.fire.ly/projects/Simplifier/features/api.html
      - type: Documentation
        url: https://app.swaggerhub.com/apis/firely/Simplifier.net_FHIR_Package_API/1.0.1
        name: SwaggerHub API documentation
      - type: OpenAPI
        url: openapi/simplifier-package-api-openapi.yml
      - type: Registry
        url: https://registry.fhir.org/
        name: FHIR Registry (human-facing search)
  - aid: firely-server:firely-server-fhir-rest-api
    name: Firely Server FHIR REST API
    description: >-
      Every Firely Server (formerly Vonk) instance exposes the standard HL7
      FHIR REST API contract — type-level and instance-level CRUD, search,
      history, batch/transaction, capability statement (/metadata),
      conditional operations, and conformance-driven validation — plus
      pluggable modules for Terminology Services, Bulk Data Access ($export),
      SMART on FHIR, CDS Hooks, Subscriptions/PubSub, FHIR Mapping Language,
      and custom search parameters. Firely Server supports FHIR R4, R4B, R5,
      and STU3 across MongoDB and SQL Server backends and is G10, ONC, and
      ISiK certified. The API contract is the HL7 FHIR specification itself;
      there is no public hosted multi-tenant base URL — customers self-host
      Firely Server on Windows, Linux, macOS, Docker, or Kubernetes.
    humanURL: https://docs.fire.ly/projects/Firely-Server/
    tags:
      - FHIR
      - REST
      - Healthcare
      - CRUD
      - Search
      - Terminology
      - Bulk Data
      - SMART on FHIR
      - CDS Hooks
      - Subscriptions
    properties:
      - type: Documentation
        url: https://docs.fire.ly/projects/Firely-Server/
        name: Firely Server Documentation
      - type: Standards
        url: https://hl7.org/fhir/http.html
        name: HL7 FHIR RESTful API specification
      - type: Standards
        url: https://hl7.org/fhir/
        name: HL7 FHIR Specification
      - type: Documentation
        url: https://hl7.org/fhir/uv/bulkdata/
        name: FHIR Bulk Data Access IG
      - type: Documentation
        url: https://hl7.org/fhir/smart-app-launch/
        name: SMART App Launch
      - type: Sample
        url: https://github.com/FirelyTeam/firely-pubsub-sample
        name: Firely Server PubSub sample
      - type: Sample
        url: https://github.com/FirelyTeam/Vonk.Facade.Starter
        name: Vonk Facade starter project
      - type: Plugin
        url: https://github.com/FirelyTeam/Vonk.Plugin.DocumentOperation
        name: Vonk $document operation plugin
      - type: Plugin
        url: https://github.com/FirelyTeam/Vonk.Plugin.ExampleOperation
        name: Vonk plugin template
common:
  - type: Website
    url: https://fire.ly
  - type: Portal
    url: https://docs.fire.ly
  - type: Documentation
    url: https://docs.fire.ly/projects/Firely-Server/
    name: Firely Server Documentation
  - type: Documentation
    url: https://docs.fire.ly/projects/Firely-NET-SDK/
    name: Firely .NET SDK Documentation
  - type: Documentation
    url: https://docs.fire.ly/projects/Simplifier/
    name: Simplifier Documentation
  - type: Documentation
    url: https://docs.fire.ly/projects/Forge/
    name: Forge Documentation
  - type: Documentation
    url: https://docs.fire.ly/projects/Firely-Terminal/
    name: Firely Terminal Documentation
  - type: Product
    url: https://fire.ly/firely-server/
    name: Firely Server (Vonk)
  - type: Product
    url: https://fire.ly/products/firely-net-sdk/
    name: Firely .NET SDK
  - type: Product
    url: https://fire.ly/products/simplifier-net/
    name: Simplifier.net
  - type: Product
    url: https://fire.ly/forge/
    name: Forge
  - type: Product
    url: https://fire.ly/products/firely-terminal/
    name: Firely Terminal
  - type: Product
    url: https://fire.ly/products/firely-auth/
    name: Firely Auth
  - type: Product
    url: https://fire.ly/products/fhir-facade/
    name: FHIR Facade
  - type: Product
    url: https://fire.ly/products/firely-server-ingest/
    name: Firely Server Ingest
  - type: GitHubOrganization
    url: https://github.com/FirelyTeam
  - type: SDK
    url: https://github.com/FirelyTeam/firely-net-sdk
    name: Firely .NET SDK (C#)
  - type: SDK
    url: https://github.com/FirelyTeam/firely-cql-sdk
    name: Firely CQL SDK
  - type: Tool
    url: https://github.com/FirelyTeam/spark
    name: Spark FHIR Server (open source)
  - type: Tool
    url: https://github.com/FirelyTeam/firely-validator-api
    name: Firely Validator API
  - type: Tool
    url: https://github.com/FirelyTeam/Firely.Fhir.Packages
    name: Firely FHIR Packages library
  - type: Tool
    url: https://github.com/FirelyTeam/Fhir.Metrics
    name: Fhir.Metrics (UCUM)
  - type: Tool
    url: https://github.com/FirelyTeam/firely-terminal-pipeline
    name: Firely Terminal GitHub Action
  - type: HelmChart
    url: https://github.com/FirelyTeam/Helm.Charts
    name: Firely Helm Charts
  - type: HelmChart
    url: https://github.com/FirelyTeam/Vonk.Helm.Charts
    name: Vonk Helm Charts
  - type: CodeExamples
    url: https://github.com/FirelyTeam/firely-pubsub-sample
    name: Firely Server PubSub sample
  - type: CodeExamples
    url: https://github.com/FirelyTeam/fhirstarters
    name: FHIR Starters example projects
  - type: CodeExamples
    url: https://github.com/FirelyTeam/Vonk.Facade.Starter
    name: Vonk Facade Starter
  - type: CodeExamples
    url: https://github.com/FirelyTeam/Vonk.Facade.Relational
    name: Vonk Facade Relational base
  - type: CodeExamples
    url: https://github.com/FirelyTeam/Firely.Fhir.ValidationDemo
    name: Firely FHIR Validation Demo
  - type: CodeExamples
    url: https://github.com/FirelyTeam/ACME-FSH-IG-Example
    name: ACME FSH IG Example
  - type: CodeExamples
    url: https://github.com/FirelyTeam/ACME-FSH-Example
    name: ACME FSH Example
  - type: Plugin
    url: https://github.com/FirelyTeam/Vonk.Plugin.DocumentOperation
    name: Vonk $document operation plugin
  - type: Plugin
    url: https://github.com/FirelyTeam/Vonk.Plugin.ExampleOperation
    name: Vonk plugin template
  - type: SDK
    url: https://github.com/FirelyTeam/RonFHIR
    name: R on FHIR
  - type: Tool
    url: https://github.com/FirelyTeam/Wind.Tunnel
    name: Wind.Tunnel FHIR server performance testing
  - type: Tool
    url: https://github.com/FirelyTeam/firely-browser-extension
    name: Firely Browser Extension
  - type: Tool
    url: https://github.com/FirelyTeam/fhir-codegen
    name: FHIR code generation tools
  - type: Tool
    url: https://github.com/FirelyTeam/Hl7.Fhir.Validation.Legacy
    name: HL7 FHIR Validation (Legacy)
  - type: Template
    url: https://github.com/FirelyTeam/fhir-specification-template-repository
    name: FHIR Specification Template Repository
  - type: Documentation
    url: https://github.com/FirelyTeam/firely-docs
    name: Firely Documentation Source
  - type: Skills
    url: https://github.com/FirelyTeam/skills
    name: Firely Agent Skills
  - type: Registry
    url: https://simplifier.net
    name: Simplifier.net FHIR Registry
  - type: Standards
    url: https://hl7.org/fhir/
    name: HL7 FHIR Specification (co-developed)
  - type: Pricing
    url: https://fire.ly/firely-server/
    name: Firely Server pricing (contact sales)
  - type: SignUp
    url: https://simplifier.net/login
    name: Simplifier.net Sign Up
  - type: Training
    url: https://fire.ly/training/
  - type: Consulting
    url: https://fire.ly/services/
  - type: Blog
    url: https://fire.ly/blog/
  - type: LinkedIn
    url: https://www.linkedin.com/company/firely/
  - type: Twitter
    url: https://twitter.com/FirelyTeam
  - type: YouTube
    url: https://www.youtube.com/c/Firely
  - type: Contact
    url: https://fire.ly/contact/
  - type: Customers
    url: https://fire.ly/customers/
  - type: Features
    data:
      - Firely Server (Vonk) — certified production FHIR server supporting FHIR R4, R4B, R5, and STU3
      - G10, ONC Health IT, and ISiK (German interoperability) certifications
      - MongoDB and SQL Server storage backends with flexible schemas
      - Deployment on Windows, Linux, macOS, Docker, and Kubernetes via official Helm Charts
      - Cloud-portable across Azure, AWS, Google Cloud, on-premise, and hybrid
      - Native FHIR validation against profiles, extensions, and value sets
      - SMART on FHIR authentication and authorization (latest version)
      - Bulk Data Access ($export) for population-scale data exchange
      - Terminology Service module ($validate-code, $expand, $lookup, $translate)
      - FHIR Mapping Language engine and CDS Hooks support
      - Subscriptions and PubSub for event-driven workflows
      - Custom search parameters, conformance resources, and request/response interception
      - Encryption at rest and in transit; event logging enabled by default
      - Firely .NET SDK — official open-source C# FHIR library (de-facto reference SDK)
      - Firely CQL SDK — Clinical Quality Language execution engine for .NET
      - Firely Terminal — CLI for FHIR validation, FQL, FSH compilation, FHIRPath, package management
      - Simplifier.net — global FHIR registry hosting 9,000+ projects and 40,000+ profiles
      - Forge — desktop FHIR profile editor integrated with Simplifier
      - Firely Validator API — standalone FHIR resource validation service
      - FHIR Facade — adapter for exposing non-FHIR backends through a FHIR API
      - Firely Server Ingest — high-volume FHIR data ingestion pipeline
      - Firely Auth — SMART-on-FHIR-compatible authentication component
      - Co-developers of HL7 FHIR (founders Ewout Kramer and Martijn Harthoorn on FHIR core team)
      - Customers include UCSF, Humana, Roche, NHS, WHO, and Opala
      - FHIR consulting, training (profiling, SDK, quality measures), and implementation services
    sources:
      - https://fire.ly
      - https://fire.ly/firely-server/
      - https://docs.fire.ly
      - https://github.com/FirelyTeam
      - https://simplifier.net
    updated: '2026-05-25'
maintainers:
  - FN: Kin Lane
    email: [email protected]
    X: apievangelist
    url: https://apievangelist.com