# Fasten Health

**Canonical:** https://apis.io/providers/fasten-health/  
**Website:** https://www.fastenhealth.com  
**APIs profiled:** 11

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.

## Kin Score — 59.2 / 100 (strong)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 59.2).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 56.0 |
| Governance | 30.3 |
| Contract Governance | 30.3 |
| Operational Transparency | 42.1 |
| Developer Ergonomics | 69.0 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Health**: 66.3 (matched via tags).

## Agent readiness — 38.5 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | documented |
| Error Semantics | documented |
| OpenAPI Examples | documented |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | near-conformant |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (11)

- **Fasten OnPrem** — 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 behin...
- **Fasten Connect API** — 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...
- **Fasten Connect Webhooks** — Fasten Connect emits HMAC-verified webhook events to notify integrators of asynchronous operations such as EHI export completion, connection lifecycle changes, and TEFCA workflo...
- **Fasten Stitch Client SDKs** — 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 applic...
- **Fasten Identity Proofing & TEFCA IAS** — 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 IA...
- **gofhir-models** — 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...
- **fhir-react** — MIT-licensed React component library for rendering FHIR resources, useful for building patient portals and clinical viewers on top of Fasten data.
- **Fasten Toolbox** — 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.
- **Folio** — 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 ...
- **Fasten Connect Quickstart Sample** — 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 ...
- **Fasten Answers AI** — 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.

## Agentic access (1)

- **Fasten Health Agentic Access** — 12 operations · 4 acting · 1 human-in-the-loop

## Security (3)

- **Fasten Health Authentication** — http/oauth2 · 3 schemes
- **Fasten Health Domain Security** — TLSv1.3 · HSTS · DMARC
- **Fasten Health Trust Center** — SOC 2, HIPAA

## Plans (1)

- **Fasten Health Plans Pricing**

## Tags

Healthcare, FHIR, Personal Health Record, Electronic Medical Record, Health Data Interoperability, TEFCA, EHI Export, Patient Consent, Self-Hosted, Open-Source, HL7, Healthcare Connectivity

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/fasten-health/). Scores are computed from the provider's own public artifacts under a published rubric.