Janssen Pharmaceuticals

Janssen Pharmaceuticals was a Belgian pharmaceutical company founded in 1953 by Paul Janssen and acquired by Johnson & Johnson in 1961. The company specialized in psychiatry, neurology, oncology, immunology, and infectious disease medicines, developing approximately 70 new active pharmaceutical substances over its history. In 2024 the Janssen brand was retired and the pharmaceutical operations were rebranded as Johnson & Johnson Innovative Medicine. As such, Janssen no longer operates as a standalone brand and does not maintain its own public APIs.

Janssen Pharmaceuticals is profiled on the APIs.io network. Tagged areas include Defunct Brand, Healthcare, Johnson & Johnson, and Pharmaceuticals.

🌐 Visit website 📡 Source on GitHub

2.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Defunct BrandHealthcareJohnson & JohnsonPharmaceuticals

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 2.4/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 3.5 / 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/janssen: 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.

Janssen Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 2

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Wikipedia

Wikipedia

Source (apis.yml)

aid: janssen
name: Janssen Pharmaceuticals
description: Janssen Pharmaceuticals was a Belgian pharmaceutical company founded in 1953 by Paul Janssen and acquired by
  Johnson & Johnson in 1961. The company specialized in psychiatry, neurology, oncology, immunology, and infectious disease
  medicines, developing approximately 70 new active pharmaceutical substances over its history. In 2024 the Janssen brand
  was retired and the pharmaceutical operations were rebranded as Johnson & Johnson Innovative Medicine. As such, Janssen
  no longer operates as a standalone brand and does not maintain its own public APIs.
type: Index
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
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/janssen.png
tags:
- Defunct Brand
- Healthcare
- Johnson & Johnson
- Pharmaceuticals
tags_raw:
- Defunct Brand
- Healthcare
- Johnson & Johnson
- Pharmaceutical
created: '2026-03-16'
modified: '2026-04-28'
url: https://raw.githubusercontent.com/api-evangelist/janssen/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis: []
common:
- type: ParentCompany
  url: https://apis.io/providers/johnson-and-johnson/
  name: Johnson & Johnson
  x-relationship: acquired
  x-evidence: Janssen Pharmaceuticals was a Belgian pharmaceutical company founded in 1953 by Paul Janssen and acquired by
    Johnson & Johnson in 1961.
- type: DomainSecurity
  url: security/janssen-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/janssen-pharmaceutical-companies-of-johnson-and-johnson
- type: Website
  name: J&J Innovative Medicine
  description: Successor brand to Janssen Pharmaceuticals under Johnson & Johnson.
  url: https://www.jnj.com/innovative-medicine
- type: Wikipedia
  name: Janssen Pharmaceuticals Wikipedia
  description: Historical reference for Janssen Pharmaceuticals.
  url: https://en.wikipedia.org/wiki/Janssen_Pharmaceuticals
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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