# ELLKAY

**Canonical:** https://apis.io/providers/ellkay/  
**Website:** https://www.ellkay.com/  
**APIs profiled:** 2

ELLKAY is a healthcare data interoperability and data-management company that connects disparate health IT systems so clinical and financial data can move where it is needed. Its LKOpera, LKOrbit, and LKOasis product lines provide interface-engine integration, orders and results, payer data retrieval, network/lab connectivity, and data archiving/migration across 750+ EMR/PM systems, 400+ hospitals, 58k+ practices, and 725+ laboratories. For developers, ELLKAY exposes the LKCloud platform: a single-endpoint Interop API (proprietary LK* operations) and a full HL7 FHIR R4 RESTful API, both authenticated with OAuth 2.0 against the LKIdentity authorization server and routed with a SiteServiceKey.

## Kin Score — 29.6 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 29.6).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 0.0 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 39.3 |
| Commercial Clarity | 17.1 |
| Access Clarity | 17.1 |

Regulatory layer — **Health**: 36.3 (matched via tags).

## Agent readiness — 15.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (2)

- **LKCloud Interop API** — Single-endpoint healthcare interoperability API exposing proprietary LK* operations (appointments, patient bridge/search, documents, charges, patient balance, master lists) that...
- **LKCloud FHIR R4 API** — HL7 FHIR R4 RESTful API (read/search/create/update/delete across R4 resources) over the ELLKAY interoperability platform, with a published CapabilityStatement. OAuth 2.0 Bearer ...

## MCP servers (1)

- **ELLKAY MCP Server**

## Security (2)

- **Ellkay Authentication** — oauth2 · 3 schemes
- **Ellkay Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Company, Healthcare, Interoperability, FHIR, HL7, EHR Integration, Health Data

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