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Fasten Health
Fasten Health
Fasten Health is a healthcare data interoperability company offering a unified medical record platform that gives patients and developers access to clinical data across the U.S. healthcare system. Fasten began as an open-source project — Fasten OnPrem, a self-hosted personal/family electronic medical record manager that ingests FHIR Bundles and is distributed under GPL-3.0 with 2.7k+ GitHub stars. The team then productized the connectivity layer as Fasten Connect, a commercial REST + FHIR API and Stitch client SDK suite that lets developers retrieve clinical records from 50,000+ healthcare systems and 60,000+ organizations including Epic, Cerner, MyChart, Kaiser Permanente, HCA, Ascension, Humana, and Medicare. Founded by engineers who lived through the fragmentation of health data firsthand and based in New York City, Fasten ships GPL/MIT/Apache 2.0 open source repos alongside the hosted Fasten Connect platform.
Fasten Health publishes 1 API on the APIs.io network: Fasten Connect API. Tagged areas include Healthcare, FHIR, Personal Health Record, Electronic Medical Record, and Health Data Interoperability.
The Fasten Health catalog on APIs.io includes 1 event-driven AsyncAPI specification.
Fasten Health’s developer surface includes authentication, documentation, GitHub presence, engineering blog, changelog, signup flow, pricing, and 44 more developer resources.
11 APIs
On this page
Kin Score
APIs 11
Pricing Plans 1
Rate Limits 1
Event Specs 1
Security Posture 3
Scopes 1
Agentic Access 1
Resources 51
apis.yml
42 Operational Transparency
Composite quality — 59.2/100 · strong
Contract Quality
11.9 / 21
Developer Ergonomics
11.7 / 17
Operational Transparency
4.7 / 11
Contract Governance
3.1 / 10
Regulatory Posture
9.9 / 15
Agent readiness — 39/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
10 / 10
Documented Reversibility
0 / 6
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
9 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
7 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
8 / 8
Dry-Run / Simulate Mode
0 / 4
Delegated User Identity
0 / 6
Protected Resource Metadata
0 / 5
Registration Without a Human
0 / 6
Agentic Commerce Surface
0 / 5
Individual APIs this provider publishes, each with its own machine-readable definition.
Scroll for all 11
Published pricing tiers and plan structures.
Documented rate limits and quota policies.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
OAuth scopes governing access to this provider's APIs.
Recommended x-agentic-access execution contracts for AI agents.
Get Started 7
Portal, sign-up, and the first successful call
Scroll for all 7
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 8
Pagination, idempotency, versioning, errors, and events
Scroll for all 8
Build 6
SDKs, sample code, and the tooling you integrate with
Access & Security 5
Authentication, authorization, and security posture
Operate 7
Status, limits, changes, and where to get help
Scroll for all 7
Commercial 5
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 3
Properties that don't map to a standard resource type
Source (apis.yml)
aid: fasten-health
name: Fasten Health
description: Fasten Health is a healthcare data interoperability company offering a unified medical record platform that gives
patients and developers access to clinical data across the U.S. healthcare system. Fasten began as an open-source project
— Fasten OnPrem, a self-hosted personal/family electronic medical record manager that ingests FHIR Bundles and is distributed
under GPL-3.0 with 2.7k+ GitHub stars. The team then productized the connectivity layer as Fasten Connect, a commercial
REST + FHIR API and Stitch client SDK suite that lets developers retrieve clinical records from 50,000+ healthcare systems
and 60,000+ organizations including Epic, Cerner, MyChart, Kaiser Permanente, HCA, Ascension, Humana, and Medicare. Founded
by engineers who lived through the fragmentation of health data firsthand and based in New York City, Fasten ships GPL/MIT/Apache
2.0 open source repos alongside the hosted Fasten Connect platform.
kind: contract
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
source: []
generated: '2026-07-22'
method: derived
position: Producing
access: Open Source
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fasten-health.png
tags:
- Healthcare
- FHIR
- Personal Health Record
- Electronic Medical Record
- Health Data Interoperability
- TEFCA
- EHI Export
- Patient Consent
- Self-Hosted
- Open-Source
- HL7
- Healthcare Connectivity
tags_raw:
- Healthcare
- FHIR
- Personal Health Record
- Electronic Medical Record
- Health Data Interoperability
- TEFCA
- EHI Export
- Patient Consent
- Self-Hosted
- Open Source
- HL7
- Healthcare Connectivity
created: '2026-05-25'
modified: '2026-08-14'
url: https://raw.githubusercontent.com/api-evangelist/fasten-health/refs/heads/main/apis.yml
specificationVersion: '0.23'
x-type: opensource
x-tier: 1
apis:
- aid: fasten-health:fasten-onprem
name: Fasten OnPrem
description: Fasten OnPrem is an open-source, self-hosted, personal and family electronic medical record manager written
in Go (47%) and TypeScript (35%). It runs as a Docker container behind HTTPS/TLS, supports multi-user family accounts
with admin and viewer roles, and ingests medical data either through manual entry or by importing FHIR Bundles. It ships
condition-specific dashboards and diagnostic test tracking, with planned vaccination-recommendation, conversational medical-history,
and wearable-integration features. Distributed under GPL-3.0 with 2.7k+ stars; the official container image is hosted
at ghcr.io/fastenhealth/fasten-onprem. STATUS - the repository was ARCHIVED (read-only) on GitHub as verified on 2026-08-14;
last push 2026-02-13 and last tagged release v1.1.3 on 2024-10-01. The self-hosted product line is no longer under active
development; Fasten's active work is the commercial Fasten Connect platform.
humanURL: https://github.com/fastenhealth/fasten-onprem
tags:
- Personal Health Record
- Electronic Medical Record
- Self-Hosted
- FHIR
- Family Health
- Open-Source
tags_raw:
- Personal Health Record
- Electronic Medical Record
- Self-Hosted
- FHIR
- Family Health
- Open Source
properties:
- type: SourceCode
url: https://github.com/fastenhealth/fasten-onprem
- type: Documentation
url: https://github.com/fastenhealth/fasten-onprem#readme
- type: ContainerImage
url: https://github.com/fastenhealth/fasten-onprem/pkgs/container/fasten-onprem
name: GHCR ghcr.io/fastenhealth/fasten-onprem
- type: License
url: https://github.com/fastenhealth/fasten-onprem/blob/main/LICENSE.md
name: GPL-3.0
- type: Issues
url: https://github.com/fastenhealth/fasten-onprem/issues
- type: ChangeLog
url: https://github.com/fastenhealth/fasten-onprem/releases
- type: GettingStarted
url: https://github.com/fastenhealth/fasten-onprem#install-instructions
- aid: fasten-health:fasten-connect
name: Fasten Connect API
description: Fasten Connect is the commercial REST + FHIR API for retrieving patient clinical records from 50,000+ U.S.
healthcare systems. The API surface is documented in OpenAPI 1.0.11 at api.connect.fastenhealth.com/v1 and uses HTTP Basic
authentication with public/private key pairs prefixed public_test_/private_test_ or public_live_/private_live_. Capabilities
include catalog discovery (search brands, fetch organization metadata, brand logos, bulk catalog export), patient-to-provider
connection orchestration via the /bridge/connect and /bridge/reconnect endpoints, organization-connection status checks,
bulk EHI (Electronic Health Information) export requests with task polling and signed downloads, TEFCA synthetic-patient
revocation for testing, and a support-ticket endpoint.
humanURL: https://docs.connect.fastenhealth.com/api-reference/introduction
baseURL: https://api.connect.fastenhealth.com/v1
tags:
- FHIR
- Healthcare Connectivity
- EHI Export
- TEFCA
- REST
- Patient Records
properties:
- type: Documentation
url: https://docs.connect.fastenhealth.com/api-reference/introduction
- type: OpenAPI
url: https://docs.connect.fastenhealth.com/api-reference/openapi.yaml
- type: OpenAPI
url: openapi/fasten-health-connect-openapi-original.yml
name: Fasten Connect OpenAPI 3.0.1 (harvested verbatim, info.version 1.0.11)
- type: Overlay
url: overlays/fasten-health-connect-overlay.yaml
- type: APIReference
url: https://docs.connect.fastenhealth.com/api-reference/introduction
- type: Authentication
url: https://docs.connect.fastenhealth.com/api-reference/authentication
- type: GettingStarted
url: https://docs.connect.fastenhealth.com/quickstart
- type: Signup
url: https://portal.fastenhealth.com
name: Fasten Connect Developer Portal
- type: Sandbox
url: https://docs.connect.fastenhealth.com/guides/test-data
- type: TestCredentials
url: https://docs.connect.fastenhealth.com/guides/test-patient-credentials
- aid: fasten-health:fasten-connect-webhooks
name: Fasten Connect Webhooks
description: Fasten Connect emits HMAC-verified webhook events to notify integrators of asynchronous operations such as
EHI export completion, connection lifecycle changes, and TEFCA workflow updates. Documentation covers event types, delivery
semantics with retries, signature verification, and a webhook debugging simulator for local development.
humanURL: https://docs.connect.fastenhealth.com/webhooks/introduction
tags:
- Webhook
- Event-Driven
- Async
tags_raw:
- Webhooks
- Event-Driven
- Async
properties:
- type: Documentation
url: https://docs.connect.fastenhealth.com/webhooks/introduction
- type: Webhooks
url: asyncapi/fasten-health-webhooks.yml
name: Fasten Connect webhook catalog (7 event types)
- type: Events
url: https://docs.connect.fastenhealth.com/webhooks/events
- type: Delivery
url: https://docs.connect.fastenhealth.com/webhooks/delivery
- type: Verification
url: https://docs.connect.fastenhealth.com/webhooks/verification
- type: Tooling
url: https://docs.connect.fastenhealth.com/guides/webhook-debugging-simulator
name: Webhook Debugging Simulator
- aid: fasten-health:fasten-stitch
name: Fasten Stitch Client SDKs
description: Stitch is Fasten Connect's client-side embeddable component that lets a patient pick their healthcare provider,
authenticate, and grant data-sharing consent inside a host application. Stitch is shipped as three SDKs — a framework-neutral
Web Component, a React SDK, and a React Native SDK — each with quickstart and reference docs. Client events stream connection
lifecycle, error, and consent signals back to the host app. The Stitch element source repos (fasten-stitch-element-react,
fasten-stitch-element-react-native) are MIT-licensed on GitHub with companion playground apps.
humanURL: https://docs.connect.fastenhealth.com/stitch/v4/introduction
tags:
- SDK
- Embeddable Component
- Patient Consent
- React
- React Native
- Web Component
properties:
- type: Documentation
url: https://docs.connect.fastenhealth.com/stitch/v4/introduction
- type: SDKs
url: https://docs.connect.fastenhealth.com/stitch/v4/sdks/web-component/quickstart
name: Stitch Web Component SDK
- type: SDKs
url: https://docs.connect.fastenhealth.com/stitch/v4/sdks/react/quickstart
name: Stitch React SDK
- type: SDKs
url: https://docs.connect.fastenhealth.com/stitch/v4/sdks/react-native/quickstart
name: Stitch React Native SDK
- type: SourceCode
url: https://github.com/fastenhealth/fasten-stitch-element-react
name: fasten-stitch-element-react
- type: SourceCode
url: https://github.com/fastenhealth/fasten-stitch-element-react-native
name: fasten-stitch-element-react-native
- type: Examples
url: https://github.com/fastenhealth/react-web-playground
name: React Web Playground
- type: Examples
url: https://github.com/fastenhealth/react-native-playground
name: React Native Playground
- type: SourceCode
url: https://github.com/fastenhealth/fasten-stitch-element-flutter
name: fasten-stitch-element-flutter (ALPHA, not published to pub.dev)
- type: Events
url: https://docs.connect.fastenhealth.com/stitch/v4/client-events
- type: Components
url: components/fasten-health-components.yml
- aid: fasten-health:fasten-identity-proofing
name: Fasten Identity Proofing & TEFCA IAS
description: Identity proofing endpoints and guides cover Fasten-issued identity verification as well as a Bring Your Own
Identity path for integrators that already meet NIST IAL2 / TEFCA IAS requirements. Documentation includes a TEFCA Individual
Access Services developer guide and patient consent + data collection guidance for HIPAA-aligned implementations.
humanURL: https://docs.connect.fastenhealth.com/identity-proofing/introduction
tags:
- Identity Proofing
- TEFCA
- IAL2
- Patient Consent
- HIPAA
properties:
- type: Documentation
url: https://docs.connect.fastenhealth.com/identity-proofing/introduction
- type: Documentation
url: https://docs.connect.fastenhealth.com/identity-proofing/bring-your-own-identity
name: Bring Your Own Identity
- type: Documentation
url: https://docs.connect.fastenhealth.com/guides/patient-consent-data-collection
name: Patient Consent & Data Collection
- type: Documentation
url: https://docs.connect.fastenhealth.com/guides/tefca-ias
name: TEFCA IAS Developer Guide
- type: OAuthScopes
url: scopes/fasten-health-scopes.yml
- type: Authentication
url: authentication/fasten-health-authentication.yml
- type: Endpoint
url: https://identity.fastenhealth.com/oauth2/par
name: Documented OAuth 2.0 PAR endpoint (RFC 9126). NOTE - identity.fastenhealth.com did not resolve in public DNS (NXDOMAIN)
when probed on 2026-08-14; recorded as documented, not as independently reachable.
- aid: fasten-health:gofhir-models
name: gofhir-models
description: Apache 2.0 licensed Go client library and generated FHIR resource models used by Fasten's services to parse,
validate, and emit FHIR R4 payloads. Maintained as a standalone open source dependency.
humanURL: https://github.com/fastenhealth/gofhir-models
tags:
- FHIR
- Go
- SDK
- Library
properties:
- type: SourceCode
url: https://github.com/fastenhealth/gofhir-models
- type: License
url: https://github.com/fastenhealth/gofhir-models/blob/main/LICENSE
name: Apache 2.0
- aid: fasten-health:fhir-react
name: fhir-react
description: MIT-licensed React component library for rendering FHIR resources, useful for building patient portals and
clinical viewers on top of Fasten data.
humanURL: https://github.com/fastenhealth/fhir-react
tags:
- FHIR
- React
- UI Components
- SDK
properties:
- type: SourceCode
url: https://github.com/fastenhealth/fhir-react
- type: License
url: https://github.com/fastenhealth/fhir-react/blob/main/LICENSE
name: MIT
- aid: fasten-health:fasten-toolbox
name: Fasten Toolbox
description: Standalone FHIR-based developer tools derived from the main Fasten platform, including catalog browsing, display
component previews, and other utilities for working with FHIR data.
humanURL: https://github.com/fastenhealth/fasten-toolbox
tags:
- FHIR
- Developer Tools
- Utilities
properties:
- type: SourceCode
url: https://github.com/fastenhealth/fasten-toolbox
- aid: fasten-health:folio
name: Folio
description: Apache 2.0 licensed modern PDF library for Go with a layout engine, HTML-to-PDF conversion, form-fill support,
digital signatures, and barcode rendering. Open-sourced by Fasten to power patient-facing medical record exports.
humanURL: https://github.com/fastenhealth/folio
tags:
- PDF
- Go
- Library
- Document Generation
properties:
- type: SourceCode
url: https://github.com/fastenhealth/folio
- type: License
url: https://github.com/fastenhealth/folio/blob/main/LICENSE
name: Apache 2.0
- aid: fasten-health:fasten-connect-quickstart
name: Fasten Connect Quickstart Sample
description: MIT-licensed JavaScript starter project that demonstrates an end-to-end Fasten Connect integration — credential
setup, Stitch embed, bulk EHI export request, and webhook-driven download.
humanURL: https://github.com/fastenhealth/fasten-connect-quickstart
tags:
- Sample
- Quickstart
- JavaScript
- Integration
properties:
- type: SourceCode
url: https://github.com/fastenhealth/fasten-connect-quickstart
- type: License
url: https://github.com/fastenhealth/fasten-connect-quickstart/blob/main/LICENSE
name: MIT
- aid: fasten-health:fasten-answers-ai
name: Fasten Answers AI
description: GPL-3.0 licensed Python proof-of-concept for AI-powered health insights — exploratory work on conversational
querying of a patient's longitudinal medical record using LLMs.
humanURL: https://github.com/fastenhealth/fasten-answers-ai
tags:
- Artificial Intelligence
- LLM
- Healthcare
- Proof of Concept
properties:
- type: SourceCode
url: https://github.com/fastenhealth/fasten-answers-ai
- type: License
url: https://github.com/fastenhealth/fasten-answers-ai/blob/main/LICENSE
name: GPL-3.0
common:
- type: AgenticAccess
url: agentic-access/fasten-health-agentic-access.yml
- type: Authentication
url: authentication/fasten-health-authentication.yml
- type: ContributionGuide
url: https://github.com/fastenhealth/fasten-onprem/blob/main/CONTRIBUTING.md
- type: DomainSecurity
url: security/fasten-health-domain-security.yml
- type: Website
url: https://www.fastenhealth.com
- type: Documentation
url: https://docs.connect.fastenhealth.com
- type: GitHub
url: https://github.com/fastenhealth/fasten-onprem
name: fasten-onprem (flagship repo)
- type: GitHubOrg
url: https://github.com/fastenhealth
- type: Blog
url: https://blog.fastenhealth.com
- type: ChangeLog
url: https://docs.connect.fastenhealth.com/changelog
- type: Signup
url: https://portal.connect.fastenhealth.com
name: Fasten Connect Developer Portal
- type: Pricing
url: https://www.fastenhealth.com
name: Contact Sales (Book a Demo)
- type: Support
url: https://docs.connect.fastenhealth.com/support
- type: FAQ
url: https://docs.connect.fastenhealth.com/faqs
- type: License
url: https://github.com/fastenhealth/fasten-onprem/blob/main/LICENSE.md
name: GPL-3.0 (Fasten OnPrem)
- type: ContainerImage
url: https://github.com/fastenhealth/fasten-onprem/pkgs/container/fasten-onprem
name: GHCR ghcr.io/fastenhealth/fasten-onprem
- type: Sandbox
url: https://docs.connect.fastenhealth.com/guides/test-data
- type: Examples
url: https://github.com/fastenhealth/fasten-connect-quickstart
- type: Demo
url: https://github.com/fastenhealth/fooclinic
name: fooclinic Demo Medical Clinic
- type: Status
url: https://status.fastenhealth.com/
- type: StatusPage
url: https://status.fastenhealth.com/
- type: Careers
url: https://wellfound.com/company/fasten-health
- type: DeveloperPortal
url: https://portal.fastenhealth.com
name: Fasten Connect Developer Portal
- type: APIReference
url: https://docs.connect.fastenhealth.com/api-reference/introduction
- type: GettingStarted
url: https://docs.connect.fastenhealth.com/quickstart
- type: SignUp
url: https://portal.fastenhealth.com
- type: GitHubOrganization
url: https://github.com/fastenhealth
- type: TermsOfService
url: https://policy.fastenhealth.com/terms.html
- type: PrivacyPolicy
url: https://policy.fastenhealth.com/connect/privacy_policy.html
- type: AgentCard
url: a2a/fasten-health-a2a.yml
name: A2A agent card served at docs.connect.fastenhealth.com (graded near-conformant)
- type: AgentSkill
url: skills/_index.yml
name: Provider-published Agent Skill (saved verbatim)
- type: LLMsTxt
url: llms/fasten-health-llms.txt
- type: WellKnown
url: well-known/fasten-health-well-known.yml
- type: Packages
url: packages/fasten-health-packages.yml
- type: SDKs
url: packages/fasten-health-packages.yml
name: Stitch client SDKs (npm) + Go libraries
- type: Conventions
url: conventions/fasten-health-conventions.yml
- type: Idempotency
url: conventions/fasten-health-conventions.yml
name: Natural-key idempotency on org_connection_id (POST /bridge/fhir/ehi-export)
- type: ErrorCatalog
url: errors/fasten-health-problem-types.yml
- type: Lifecycle
url: lifecycle/fasten-health-lifecycle.yml
- type: ChangeLog
url: changelog/fasten-health-changelog.yml
name: Structured changelog (72 dated entries, 2024-09-30..2026-08-04)
- type: Conformance
url: conformance/fasten-health-conformance.yml
- type: Compliance
url: https://trust.fastenhealth.com/
name: SOC 2 + HIPAA, CARIN Alliance Code of Conduct signatory
- type: TrustCenter
url: security/fasten-health-trust-center.yml
- type: Sandbox
url: sandbox/fasten-health-sandbox.yml
name: FooClinic sandbox, TEFCA C-CDA fixtures, test/live key modes
- type: DataModel
url: data-model/fasten-health-data-model.yml
- type: Components
url: components/fasten-health-components.yml
- type: OAuthScopes
url: scopes/fasten-health-scopes.yml
- type: Plans
url: plans/fasten-health-plans-pricing.yml
- type: RateLimits
url: rate-limits/fasten-health-rate-limits.yml
- type: Webhooks
url: asyncapi/fasten-health-webhooks.yml
- type: Overlay
url: overlays/fasten-health-connect-overlay.yaml
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
x-enrichment:
date: '2026-08-14'
status: enriched
artifacts_added: 25
pass: local-v1
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