Nines

Nines was a teleradiology and medical-imaging AI startup founded in 2017 and backed by Accel and 8VC (a $16.5M Series A in 2019), co-founded by CEO David Stavens. It built FDA-cleared AI algorithms — NinesAI Emergent Triage (for intracranial hemorrhage and mass effect) and NinesMeasure (a lung-nodule algorithm) — alongside a live teleradiology practice. On 2022-02-18, Sirona Medical acquired Nines' AI technology, clinical data pipeline, machine-learning engines, and key personnel, folding the FDA-cleared devices into RadOS, Sirona's cloud-native Radiology Operating System (reporter, viewer, PACS, worklist, and platform AI). The nines.com domain now redirects to sironamedical.com. There is no public developer API today; a RadOS "Amplify" SDK (TypeScript/Python, REST + streaming APIs, event subscriptions) is on Sirona's roadmap as an early-access program for design partners.

Nines is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Radiology, Medical Imaging, and Healthcare.

Nines’ developer surface includes engineering blog, pricing, signup flow, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

15.4/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

0 APIs

CompanyArtificial IntelligenceRadiologyMedical ImagingHealthcareTeleradiologyDICOM

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 15.4/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 6.7 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 4.9 / 9

Regulatory Posture 1.9 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/. This rating is computed from github.com/api-evangelist/nines: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 2

Authentication, authorization, and security posture

Compliance

Compliance

TrustCenter

TrustCenter

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 4

The organization behind the API

Website

About

Blog

Press

Source (apis.yml)

aid: nines
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/nines.png
name: Nines
description: Nines was a teleradiology and medical-imaging AI startup founded in 2017 and backed by Accel and 8VC (a $16.5M
  Series A in 2019), co-founded by CEO David Stavens. It built FDA-cleared AI algorithms — NinesAI Emergent Triage (for intracranial
  hemorrhage and mass effect) and NinesMeasure (a lung-nodule algorithm) — alongside a live teleradiology practice. On 2022-02-18,
  Sirona Medical acquired Nines' AI technology, clinical data pipeline, machine-learning engines, and key personnel, folding
  the FDA-cleared devices into RadOS, Sirona's cloud-native Radiology Operating System (reporter, viewer, PACS, worklist,
  and platform AI). The nines.com domain now redirects to sironamedical.com. There is no public developer API today; a RadOS
  "Amplify" SDK (TypeScript/Python, REST + streaming APIs, event subscriptions) is on Sirona's roadmap as an early-access
  program for design partners.
url: https://raw.githubusercontent.com/api-evangelist/nines/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
- 8vc
x-tier: stub
x-tier-reason: portfolio-lead
x-successor: sirona-medical
x-acquired-by: Sirona Medical
x-acquired-date: '2022-02-18'
x-former-domain: nines.com
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Artificial Intelligence
- Radiology
- Medical Imaging
- Healthcare
- Teleradiology
- DICOM
tags_raw:
- Company
- AI
- Radiology
- Medical Imaging
- Healthcare
- Teleradiology
- DICOM
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://sironamedical.com
- type: About
  url: https://sironamedical.com/company
- type: Blog
  url: https://sironamedical.com/resources/blog
- type: Press
  url: https://sironamedical.com/company/press
- type: Pricing
  url: https://sironamedical.com/pro
- type: SignUp
  url: https://sironamedical.com/see-sirona
- type: LLMsTxt
  url: llms/nines-llms.txt
- type: Conformance
  url: conformance/nines-conformance.yml
- type: Compliance
  url: conformance/nines-conformance.yml
- type: TrustCenter
  url: security/nines-trust-center.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 3
  pass: local-v1