Lumius

Lumius is a Y Combinator (Spring 2026) medical-imaging startup building fast, smart, accessible real-time 3D ultrasound systems — described as "a 3D camera for the body." The technology aims to move ultrasound beyond traditional 2D imaging to intelligent, AI-assisted 3D visualization across larger volumes, with an initial focus on vascular access and central-line placement (where roughly half of first attempts fail among new clinicians) and future targets including blood-clot detection, tumor diagnosis, and biopsy guidance. The company partners with academic institutions such as Duke University and Columbia University. Lumius is a hardware/device company with no public API, SDK, or developer platform; its products are pre-market and not intended for medical use. This profile was added to the API Evangelist network as a VC portfolio lead and has been reviewed by the enrichment pipeline.

Lumius is profiled on the APIs.io network. Tagged areas include Company, Medical Imaging, Ultrasound, Healthcare, and Medical Devices.

Lumius’ developer surface includes engineering blog and 3 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

3.5/100 minimal ▬ flat Agent 0/100 human only Front door AI 2/6 trace Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

0 APIs

Company Medical Imaging Ultrasound Healthcare Medical Devices Artificial Intelligence Hardware Y Combinator

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 3.5/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 0.0 / 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

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/. 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/lumius: 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 →

Resources

Company 4

The organization behind the API

Blog

Blog

Website

Website

LinkedIn

Crunchbase

Crunchbase

Source (apis.yml)

aid: lumius
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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/lumius.png
name: Lumius
description: Lumius is a Y Combinator (Spring 2026) medical-imaging startup building fast, smart, accessible real-time 3D
  ultrasound systems — described as "a 3D camera for the body." The technology aims to move ultrasound beyond traditional
  2D imaging to intelligent, AI-assisted 3D visualization across larger volumes, with an initial focus on vascular access
  and central-line placement (where roughly half of first attempts fail among new clinicians) and future targets including
  blood-clot detection, tumor diagnosis, and biopsy guidance. The company partners with academic institutions such as Duke
  University and Columbia University. Lumius is a hardware/device company with no public API, SDK, or developer platform;
  its products are pre-market and not intended for medical use. This profile was added to the API Evangelist network as a
  VC portfolio lead and has been reviewed by the enrichment pipeline.
url: https://raw.githubusercontent.com/api-evangelist/lumius/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Medical Imaging
- Ultrasound
- Healthcare
- Medical Devices
- Artificial Intelligence
- Hardware
- Y Combinator
apis: []
common:
- url: https://www.lumius-imaging.com/news
  type: Blog
- type: Website
  url: https://www.lumius-imaging.com
- type: LinkedIn
  url: https://www.linkedin.com/company/lumius-imaging/
- type: Crunchbase
  url: https://www.ycombinator.com/companies/lumius
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: nochange
  artifacts_added: 0
  pass: local-v1

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