Circle Health Group website screenshot

Circle Health Group

Circle Health Group is the largest independent operator of private hospitals in the United Kingdom, running a nationwide network of hospitals and clinics that provide diagnostics, surgery, physiotherapy, and consultant-led private medical care to self-pay patients, insured patients, and the NHS. Originally backed by Balderton Capital as Circle Holdings, the group offers services spanning orthopaedics, cardiology, gynaecology, general surgery, and imaging. It was added to the API Evangelist network as a portfolio-company lead; the organization operates a consumer-facing patient website and does not currently publish a public developer API, SDK, or developer portal surface.

Circle Health Group is profiled on the APIs.io network. Tagged areas include Company, Healthcare, Private Hospitals, Medical, and Health Services.

7.7/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyHealthcarePrivate HospitalsMedicalHealth ServicesUnited Kingdom

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 7.7/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/circlehealth: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

Circlehealth Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

Company 1

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: circlehealth
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/circlehealth.png
name: Circle Health Group
description: Circle Health Group is the largest independent operator of private hospitals in the United Kingdom, running a
  nationwide network of hospitals and clinics that provide diagnostics, surgery, physiotherapy, and consultant-led private
  medical care to self-pay patients, insured patients, and the NHS. Originally backed by Balderton Capital as Circle Holdings,
  the group offers services spanning orthopaedics, cardiology, gynaecology, general surgery, and imaging. It was added to
  the API Evangelist network as a portfolio-company lead; the organization operates a consumer-facing patient website and
  does not currently publish a public developer API, SDK, or developer portal surface.
url: https://raw.githubusercontent.com/api-evangelist/circlehealth/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- balderton-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Healthcare
- Private Hospitals
- Medical
- Health Services
- United Kingdom
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/circlehealth-domain-security.yml
- type: Website
  url: https://www.circlehealthgroup.co.uk/
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence