Zenasbio

Zenas BioPharma is a global clinical-stage biopharmaceutical company focused on developing and delivering transformative treatments for patients with autoimmune and rare diseases. Its lead candidates are obexelimab, a bifunctional monoclonal antibody that inhibits B-cell activity without depleting B cells, and orelabrutinib, an oral central-nervous-system-penetrant BTK inhibitor. The company serves patients, caregivers, investors, and job seekers through its corporate website; it publishes no public developer portal, API, SDKs, or technical integration surface. This profile was surfaced as a portfolio company of Norwest Venture Partners.

Zenasbio is profiled on the APIs.io network. Tagged areas include Company, Biopharmaceutical, Biotechnology, Autoimmune, and Therapeutics.

🌐 Visit website 📡 Source on GitHub
3.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
0 APIs
CompanyBiopharmaceuticalBiotechnologyAutoimmuneTherapeuticsHealthcarePharmaceuticalsClinical Stage

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 3.3/100 · 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 4.3 / 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
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/zenasbio: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

Zenasbio Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: zenasbio
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/zenasbio.png
name: Zenasbio
description: Zenas BioPharma is a global clinical-stage biopharmaceutical company focused on developing and delivering transformative
  treatments for patients with autoimmune and rare diseases. Its lead candidates are obexelimab, a bifunctional monoclonal
  antibody that inhibits B-cell activity without depleting B cells, and orelabrutinib, an oral central-nervous-system-penetrant
  BTK inhibitor. The company serves patients, caregivers, investors, and job seekers through its corporate website; it publishes
  no public developer portal, API, SDKs, or technical integration surface. This profile was surfaced as a portfolio company
  of Norwest Venture Partners.
url: https://raw.githubusercontent.com/api-evangelist/zenasbio/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Biopharmaceutical
- Biotechnology
- Autoimmune
- Therapeutics
- Healthcare
- Pharmaceuticals
- Clinical Stage
tags_raw:
- Company
- Biopharmaceutical
- Biotechnology
- Autoimmune
- Therapeutics
- Healthcare
- Pharmaceuticals
- Clinical-Stage
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/zenasbio-domain-security.yml
- type: Website
  url: https://zenasbio.com
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1