# 4D Path

> 4D Path, Inc. is a computational-pathology company in Newton, Massachusetts, founded in 2016.
> Its Q-plasia OncoReader (QPOR) platform applies statistical physics and cancer biology — not
> conventional image-classification AI — to digitized H&E-stained whole-slide biopsy and
> resection images, quantifying cell-cycle deregulation and tumor immune microenvironment
> dynamics to produce biomarker profiling, grading and therapy-response prediction without
> additional molecular assays (IHC, FISH, RNA-Seq, NGS). Its lead software-as-a-medical-device
> product, 4D Q-plasia OncoReader Breast, received FDA Breakthrough Device Designation in
> November 2020.

## Status

4D Path publishes **no public API**, no developer portal, no API reference, no SDK, no CLI and
no machine-readable contract. As of 2026-09-05, probes on `4dpath.com` for `/openapi.json`,
`/openapi.yaml`, `/swagger.json`, `/v1/openapi.json`, `/api-docs`, `/docs`, `/redoc`, `/api`,
`/graphql`, `/llms.txt`, `/apis.json`, `/apis.yml` and the full named `/.well-known/` list
(`security.txt`, `openid-configuration`, `oauth-authorization-server`,
`oauth-protected-resource`, `api-catalog`, `ai-plugin.json`, `apis.json`,
`aauth-resource.json`, `ucp.json`, `acp.json`, `agent-card.json`, `agent.json`) all returned
404. One API-shaped host resolves in DNS — `api.4dpath.com`, an Azure Web App — and it answers
Microsoft's stock "Azure Web App - Error 404" page for the site root and for every path
probed, so nothing is publicly routed there. No `docs.`, `developer.`, `portal.`, `app.` or
`platform.` subdomain resolves. No npm, PyPI or GitHub organization exists under the 4D Path
name. The QPOR reader reaches pathologists inside PathPresenter's ClinPx viewer, through
PathPresenter's own integration surface, rather than through a 4D Path API.

This file is generated by API Evangelist from the catalog profile. It is **not** published by
4D Path.

## Company

- [4D Path](https://4dpath.com/): Company website.
- [About Us](https://4dpath.com/about-us/): Company background and mission.
- [Our Teams](https://4dpath.com/our-teams/): Leadership, scientific and advisory teams.
- [4D Path Solution](https://4dpath.com/platform/): The QPOR platform and its cloud-based workflow.
- [Solutions](https://4dpath.com/solutions/): Product line, including 4D Q-plasia OncoReader Breast.
- [Clinical Validation](https://4dpath.com/clinical-validation/): Validation studies and results.
- [Publications and Posters](https://4dpath.com/publications-posters/): Peer-reviewed papers and conference posters.
- [Investors](https://4dpath.com/investors/): Investor information.
- [Contact Us](https://4dpath.com/contact-us/): Contact form.

## News

- [News and Events](https://4dpath.com/news-events/): Company announcements and conference appearances.
- [RSS feed](https://4dpath.com/feed/): WordPress feed.

## Legal

- [Terms and Conditions](https://4dpath.com/terms-conditions)
- [Privacy Policy](https://4dpath.com/privacy-policy)

## API Evangelist

- [APIs.json profile](https://raw.githubusercontent.com/api-evangelist/4d-path/refs/heads/main/apis.yml)
- [Domain security probe](https://raw.githubusercontent.com/api-evangelist/4d-path/refs/heads/main/security/4d-path-domain-security.yml)
- [Well-known discovery probe](https://raw.githubusercontent.com/api-evangelist/4d-path/refs/heads/main/well-known/4d-path-well-known.yml)