4D Path

4D Path, Inc. is a Newton, Massachusetts computational-pathology company founded in 2016 that builds the Q-plasia OncoReader (QPOR) platform, a patented, cloud-based precision oncology and computer-aided cancer diagnostic system. Rather than conventional image-classification AI, QPOR applies statistical physics and cancer biology to digitized H&E-stained whole-slide biopsy and resection images to measure and quantify cell-cycle deregulation and tumor immune microenvironment dynamics, producing biomarker profiling, grading and therapy-response prediction without additional molecular assays such as IHC, FISH, RNA-Seq or NGS. Its lead software-as-a-medical-device product, 4D Q-plasia OncoReader Breast, received FDA Breakthrough Device Designation in November 2020, and the company has partnered with PathPresenter to distribute the reader inside the ClinPx clinical workflow platform. 4D Path publishes no public developer program, API reference, SDK or machine-readable contract of any kind — see x-coverage.

4D Path is profiled on the APIs.io network. Tagged areas include Company, Healthcare, Digital Pathology, Oncology, and Cancer Diagnostics.

4D Path’s developer surface includes engineering blog and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

6.4/100 minimal ▬ flat Agent 0/100 human only Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

0 APIs

Company Healthcare Digital Pathology Oncology Cancer Diagnostics Medical Imaging Artificial Intelligence Precision Medicine Software as a Medical Device Life Sciences Massachusetts

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 6.4/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.2 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 1.1 / 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/4d-path: 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 →

Security Posture 1

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

4D Path Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 7

The organization behind the API

Website

About

Blog

BlogFeeds

Investors

LinkedIn

Twitter

Twitter

Scroll for all 7

Other 4

Properties that don't map to a standard resource type

Team

Platform

Research

Validation

Source (apis.yml)

aid: 4d-path
name: 4D Path
description: 4D Path, Inc. is a Newton, Massachusetts computational-pathology company founded in 2016 that builds the Q-plasia
  OncoReader (QPOR) platform, a patented, cloud-based precision oncology and computer-aided cancer diagnostic system. Rather
  than conventional image-classification AI, QPOR applies statistical physics and cancer biology to digitized H&E-stained
  whole-slide biopsy and resection images to measure and quantify cell-cycle deregulation and tumor immune microenvironment
  dynamics, producing biomarker profiling, grading and therapy-response prediction without additional molecular assays such
  as IHC, FISH, RNA-Seq or NGS. Its lead software-as-a-medical-device product, 4D Q-plasia OncoReader Breast, received FDA
  Breakthrough Device Designation in November 2020, and the company has partnered with PathPresenter to distribute the reader
  inside the ClinPx clinical workflow platform. 4D Path publishes no public developer program, API reference, SDK or machine-readable
  contract of any kind — see x-coverage.
image: https://4dpath.com/wp-content/uploads/2024/06/4D-Path_logo.png
url: https://raw.githubusercontent.com/api-evangelist/4d-path/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profile
x-tier-reason: no-api-surface
specificationVersion: '0.23'
created: '2026-09-05'
modified: '2026-09-05'
tags:
- Company
- Healthcare
- Digital Pathology
- Oncology
- Cancer Diagnostics
- Medical Imaging
- Artificial Intelligence
- Precision Medicine
- Software as a Medical Device
- Life Sciences
- Massachusetts
tags_raw:
- Company
- Healthcare
- Digital Pathology
- Oncology
- Cancer Diagnostics
- Medical Imaging
- Artificial Intelligence
- Precision Medicine
- Software as a Medical Device
- Life Sciences
- Massachusetts
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/4d-path-domain-security.yml
- type: Website
  url: https://4dpath.com/
- type: About
  url: https://4dpath.com/about-us/
- type: Team
  url: https://4dpath.com/our-teams/
- type: Platform
  url: https://4dpath.com/platform/
- type: Solutions
  url: https://4dpath.com/solutions/
- type: Research
  url: https://4dpath.com/publications-posters/
- type: Validation
  url: https://4dpath.com/clinical-validation/
- type: Blog
  url: https://4dpath.com/news-events/
- type: BlogFeeds
  url: https://4dpath.com/feed/
- type: Investors
  url: https://4dpath.com/investors/
- type: Contact
  url: https://4dpath.com/contact-us/
- type: TermsOfService
  url: https://4dpath.com/terms-conditions
- type: PrivacyPolicy
  url: https://4dpath.com/privacy-policy
- type: LinkedIn
  url: https://www.linkedin.com/company/4d-path/
- type: Twitter
  url: https://x.com/4DPath
- type: LLMsTxt
  url: llms/4d-path-llms.txt
x-enrichment:
  date: '2026-09-05'
  status: minimal
  artifacts_added: 3
  pass: local-v3
x-coverage:
  state: none
  reason: no-developer-program
  detail: 4D Path ships the QPOR reader as a software-as-a-medical-device product consumed by pathologists inside PathPresenter's
    ClinPx whole-slide viewer, and 4dpath.com is a WordPress marketing site with no developer, API, documentation or integration
    section anywhere in its nav or sitemap; the one API-shaped host that resolves in DNS, api.4dpath.com, is an Azure Web
    App that answers Microsoft's stock 404 page for its own root and for every contract path probed, including /openapi.json
    and /swagger/v1/swagger.json.
  evidence:
  - url: https://4dpath.com/
    status: 200
  - url: https://4dpath.com/openapi.json
    status: 404
  - url: https://4dpath.com/llms.txt
    status: 404
  - url: https://4dpath.com/.well-known/agent-card.json
    status: 404
  - url: https://api.4dpath.com/
    status: 404
  - url: https://api.4dpath.com/swagger/v1/swagger.json
    status: 404
  - url: https://api.github.com/orgs/4dpath
    status: 404
  checked: '2026-09-05'

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