Ocean Health Systems

Ocean Health Systems (legally Ocean Informatics Pty Ltd, founded 1998, with offices in Bundall QLD, Chatswood NSW and London) is the Australian clinical-informatics company whose founders commercialised the first openEHR clinical data repository and built Clinical Knowledge Manager (CKM) — the repository and collaborative governance environment in which openEHR archetypes, templates, terminology subsets and release sets are authored, peer reviewed, semantically versioned, approved and published, with terminology binding to SNOMED CT and LOINC and mappings out to FHIR and OMOP. CKM runs the international openEHR community instance as well as national and vendor deployments, and ships a documented Swagger 2.0 REST API (48 operations) for discovering models and pulling their ADL, XML, OET and Operational Template representations. Ocean also builds Multiprac Immunize and Multiprac Surveillance for immunisation and infection prevention, and publishes the free Archetype Editor and Template Designer authoring tools.

Ocean Health Systems publishes 9 APIs on the APIs.io network, including Archetypes API, Change Requests API, Projects API, and 6 more. Tagged areas include Health, Healthcare, Electronic Health Records, openEHR, and Clinical Data.

Ocean Health Systems’ developer surface includes documentation, API reference, support, engineering blog, authentication, changelog, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

34.5/100 thin ▬ flat Agent 24/100 agent aware Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-24 · rubric v0.22.0

1 APIs

Health Healthcare Electronic Health Records openEHR Clinical DataClinical Knowledge ManagementInteroperability Health Informatics Terminology Archetypes Infection Preventionimmunisation

Kin Score

Kin Score How this is scored →
scored 2026-09-24 · rubric v0.22.0

Composite quality — 34.5/100 · thin

Contract Quality 8.9 / 19

Developer Ergonomics 5.6 / 15

Access Clarity 3.2 / 15

Operational Transparency 1.8 / 10

Contract Governance 0.4 / 9

Discoverability 5.1 / 8

Regulatory Posture 4.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 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 Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Health regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/ocean-health-systems: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Ocean Health Systems Archetypes API

Endpoint for archetype-related services, including listing and getting archetypes.

Ocean Health Systems Change Requests API

Endpoint for change request-related services, including listing and getting change requests.

Ocean Health Systems Projects API

Endpoint for project-related services, including listing and getting projects.

Ocean Health Systems Resource Proposals API

Endpoint for resource proposal-related services, including listing and getting resource proposals.

Ocean Health Systems Resources API

Endpoint for generic resources, including archetypes and templates. May sometimes be easier to use.

Ocean Health Systems Sessions API

Endpoint for creating a new user session or signing out.

Ocean Health Systems Subdomains API

Endpoint for subdomain-related services, including listing and getting subdomains.

Ocean Health Systems Templates API

Endpoint for template-related services, including listing and getting templates.

Ocean Health Systems Users API

Endpoint for user-related services, including creating new users as an admin.

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Ocean Health Systems Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Ocean Health Systems Rate Limits

0 limits

RATE LIMITS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Ocean Health Systems Authentication

apiKey/http · 2 schemes

SECURITY

Ocean Health Systems Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Conformance

Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 3

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: ocean-health-systems
name: Ocean Health Systems
description: Ocean Health Systems (legally Ocean Informatics Pty Ltd, founded 1998, with offices in Bundall QLD, Chatswood
  NSW and London) is the Australian clinical-informatics company whose founders commercialised the first openEHR clinical
  data repository and built Clinical Knowledge Manager (CKM) — the repository and collaborative governance environment in
  which openEHR archetypes, templates, terminology subsets and release sets are authored, peer reviewed, semantically versioned,
  approved and published, with terminology binding to SNOMED CT and LOINC and mappings out to FHIR and OMOP. CKM runs the
  international openEHR community instance as well as national and vendor deployments, and ships a documented Swagger 2.0
  REST API (48 operations) for discovering models and pulling their ADL, XML, OET and Operational Template representations.
  Ocean also builds Multiprac Immunize and Multiprac Surveillance for immunisation and infection prevention, and publishes
  the free Archetype Editor and Template Designer authoring tools.
image: https://oceanhealthsystems.com/wp-content/uploads/2023/09/Asset-33@300x-e1695112566701.png
url: https://raw.githubusercontent.com/api-evangelist/ocean-health-systems/refs/heads/main/apis.yml
x-type: company
x-source: harvest:openehr-coalition
specificationVersion: '0.20'
created: '2026-09-02'
modified: '2026-09-02'
tags:
- Health
- Healthcare
- Electronic Health Records
- openEHR
- Clinical Data
- Clinical Knowledge Management
- Interoperability
- Health Informatics
- Terminology
- Archetypes
- Infection Prevention
- immunisation
tags_raw:
- health
- healthcare
- electronic-health-records
- openehr
- clinical-data
- clinical-knowledge-management
- interoperability
- health-informatics
- terminology
- archetypes
- infection-prevention
- immunisation
apis:
- aid: ocean-health-systems:ocean-health-systems-archetypes-api
  name: Ocean Health Systems Archetypes API
  description: Endpoint for archetype-related services, including listing and getting archetypes.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Archetypes
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-archetypes-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-change-requests-api
  name: Ocean Health Systems Change Requests API
  description: Endpoint for change request-related services, including listing and getting change requests.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Change Requests
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-change-requests-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-projects-api
  name: Ocean Health Systems Projects API
  description: Endpoint for project-related services, including listing and getting projects.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-projects-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-resource-proposals-api
  name: Ocean Health Systems Resource Proposals API
  description: Endpoint for resource proposal-related services, including listing and getting resource proposals.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Resource Proposals
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-resource-proposals-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-resources-api
  name: Ocean Health Systems Resources API
  description: Endpoint for generic resources, including archetypes and templates. May sometimes be easier to use.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Resources
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-resources-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-sessions-api
  name: Ocean Health Systems Sessions API
  description: Endpoint for creating a new user session or signing out.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-sessions-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-subdomains-api
  name: Ocean Health Systems Subdomains API
  description: Endpoint for subdomain-related services, including listing and getting subdomains.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Subdomains
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-subdomains-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-templates-api
  name: Ocean Health Systems Templates API
  description: Endpoint for template-related services, including listing and getting templates.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-templates-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
- aid: ocean-health-systems:ocean-health-systems-users-api
  name: Ocean Health Systems Users API
  description: Endpoint for user-related services, including creating new users as an admin.
  humanURL: https://ckm.openehr.org/ckm/rest-doc/
  baseURL: https://ckm.openehr.org/ckm/rest/v1
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/ocean-health-systems-users-api-openapi.yml
  - type: Documentation
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: APIReference
    url: https://ckm.openehr.org/ckm/rest-doc/
  - type: Authentication
    url: authentication/ocean-health-systems-authentication.yml
  - type: Conventions
    url: conventions/ocean-health-systems-conventions.yml
  - type: ErrorCatalog
    url: errors/ocean-health-systems-problem-types.yml
  - type: DataModel
    url: data-model/ocean-health-systems-data-model.yml
  - type: RateLimits
    url: rate-limits/ocean-health-systems-rate-limits.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://oceanhealthsystems.com/
- type: Documentation
  url: https://ckm.openehr.org/ckm/rest-doc/
- type: APIReference
  url: https://ckm.openehr.org/ckm/rest-doc/
- type: Support
  url: https://oceanehr.atlassian.net/servicedesk/customer/portal/15
- type: Blog
  url: https://oceanhealthsystems.com/media/
- type: BlogRSS
  url: https://oceanhealthsystems.com/feed/
- type: GitHubOrganization
  url: https://github.com/OceanHealthSystems
- type: TermsOfService
  url: https://oceanhealthsystems.com/fair-use-policy/
- type: PrivacyPolicy
  url: https://oceanhealthsystems.com/privacy-policy/
- type: OpenAPI
  url: openapi/ocean-health-systems-ckm-rest-api-openapi.json
- type: Overlay
  url: overlays/ocean-health-systems-ckm-rest-api-overlay.yaml
- type: Authentication
  url: authentication/ocean-health-systems-authentication.yml
- type: Conventions
  url: conventions/ocean-health-systems-conventions.yml
- type: ErrorCatalog
  url: errors/ocean-health-systems-problem-types.yml
- type: DataModel
  url: data-model/ocean-health-systems-data-model.yml
- type: Conformance
  url: conformance/ocean-health-systems-conformance.yml
- type: Lifecycle
  url: lifecycle/ocean-health-systems-lifecycle.yml
- type: ChangeLog
  url: changelog/ocean-health-systems-changelog.yml
- type: Packages
  url: packages/ocean-health-systems-packages.yml
- type: Plans
  url: plans/ocean-health-systems-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ocean-health-systems-rate-limits.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/ocean-health-systems-llms.txt
- type: DomainSecurity
  url: security/ocean-health-systems-domain-security.yml
x-pointers-omitted:
  note: Deliberate absences, each measured on 2026-09-02. Recording them here so a later round does not re-litigate them,
    and so no pointer asserts a surface Ocean does not serve.
  omitted:
  - type: WellKnown
    reason: every named /.well-known/ path returns 404 on all three hosts; control probe also 404 (see well-known/)
  - type: SecurityTxt
    reason: /.well-known/security.txt 404 on oceanhealthsystems.com, www., and ckm.openehr.org
  - type: MCPServer
    reason: no first-party MCP server exists; mcp/ holds a DERIVED candidate with deployment.mode none
  - type: AgentCard
    reason: /.well-known/agent-card.json and /.well-known/agent.json 404 on every host; nothing written to a2a/
  - type: SDKs
    reason: no first-party client library in npm, PyPI, Maven Central or NuGet (see packages/)
  - type: Idempotency
    reason: no idempotency key; only conditional requests (if-match / if-unmodified-since, 412)
  - type: StatusPage
    reason: no status page; oceanhealthsystems.statuspage.io is Statuspage's catch-all, confirmed against a control probe
  - type: Deprecation
    reason: no deprecation or sunset policy, and zero operations marked deprecated in the contract
  - type: Security
    reason: no vulnerability disclosure policy, security.txt or bug bounty found
  - type: Compliance
    reason: no certifications or audit attestations published; no trust centre
  - type: Pricing
    reason: no pricing page anywhere in the site sitemap; every product routes to a demo form
  - type: SignUp
    reason: no self-serve sign-up; enterprise sales gate only
  - type: Postman
    reason: Postman public search returned zero collections or workspaces for CKM/openEHR
  - type: AsyncAPI
    reason: no event, streaming or webhook surface in the contract or the docs
  - type: Webhooks
    reason: no webhook catalogue published
  - type: Protobuf
    reason: no .proto published
  - type: WSDL
    reason: ?wsdl probes returned the HTML app shell or 410 Gone; no SOAP contract served
  - type: OAuthScopes
    reason: no oauth2 or openIdConnect scheme in the contract, so there is no scope surface
x-enrichment:
  date: '2026-09-02'
  status: enriched
  artifacts_added: 21
  pass: local-v1

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