Atara Bio

Atara Biotherapeutics is a clinical-stage allogeneic (off-the-shelf) T-cell immunotherapy company developing transformative therapies that harness T cells to fight cancer and autoimmune conditions, and is the first company to receive regulatory approval for an allogeneic T-cell immunotherapy. Surfaced as a portfolio company of Kleiner Perkins and added to the API Evangelist network. The company publishes a corporate website but no public developer API, developer portal, or API documentation was found; this profile carries identity and domain-security posture only.

Atara Bio is profiled on the APIs.io network. Tagged areas include Company, Healthcare, Biotechnology, Immunotherapy, and Cell Therapy.

🌐 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

CompanyHealthcareBiotechnologyImmunotherapyCell TherapyPharmaceuticalsLife Sciences

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/atara-bio: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: atara-bio
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/atara-bio.png
name: Atara Bio
description: Atara Biotherapeutics is a clinical-stage allogeneic (off-the-shelf) T-cell immunotherapy company developing
  transformative therapies that harness T cells to fight cancer and autoimmune conditions, and is the first company to receive
  regulatory approval for an allogeneic T-cell immunotherapy. Surfaced as a portfolio company of Kleiner Perkins and added
  to the API Evangelist network. The company publishes a corporate website but no public developer API, developer portal,
  or API documentation was found; this profile carries identity and domain-security posture only.
url: https://raw.githubusercontent.com/api-evangelist/atara-bio/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- kleiner-perkins
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Healthcare
- Biotechnology
- Immunotherapy
- Cell Therapy
- Pharmaceuticals
- Life Sciences
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/atara-bio-domain-security.yml
- type: Website
  url: https://www.atarabio.com
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Atara Bio

Kin Score

Security Posture 1

Atara Bio Domain Security

Resources

Access & Security 1

Company 1

Source (apis.yml)