Celltype

CellType is an AI-driven drug discovery company building what it calls "The Biological World Model" — foundation models and autonomous agents that simulate human biology to predict drug responses in human systems before clinical trials, reducing reliance on traditional preclinical models such as mice and cell lines. Its core technology, Cell2Sentence (C2S), teaches large language models to understand cellular biology by converting single-cell gene expression data into a text-like format that models can interpret, and the company reports using it to discover and validate a novel cancer treatment signal targeting tumor immunogenicity. A Y Combinator (Winter 2026) company based in New York City, CellType works with large pharmaceutical partners and currently operates as a B2B research and drug-discovery platform rather than a public developer API.

Celltype is profiled on the APIs.io network. Tagged areas include Company, Biotechnology, Drug Discovery, Artificial Intelligence, and Machine-Learning.

🌐 Visit website 📡 Source on GitHub
3.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
CompanyBiotechnologyDrug DiscoveryArtificial IntelligenceMachine-LearningLife SciencesGenomicsSingle CellFoundation ModelsHealthcare

Kin Score

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

Celltype Domain Security

TLSv1.3 · HSTS · 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: celltype
name: Celltype
description: CellType is an AI-driven drug discovery company building what it calls "The Biological World Model" — foundation
  models and autonomous agents that simulate human biology to predict drug responses in human systems before clinical trials,
  reducing reliance on traditional preclinical models such as mice and cell lines. Its core technology, Cell2Sentence (C2S),
  teaches large language models to understand cellular biology by converting single-cell gene expression data into a text-like
  format that models can interpret, and the company reports using it to discover and validate a novel cancer treatment signal
  targeting tumor immunogenicity. A Y Combinator (Winter 2026) company based in New York City, CellType works with large pharmaceutical
  partners and currently operates as a B2B research and drug-discovery platform rather than a public developer API.
url: https://raw.githubusercontent.com/api-evangelist/celltype/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
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
image: https://www.celltype.com/favicon.svg
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Biotechnology
- Drug Discovery
- Artificial Intelligence
- Machine-Learning
- Life Sciences
- Genomics
- Single Cell
- Foundation Models
- Healthcare
tags_raw:
- Company
- Biotechnology
- Drug Discovery
- Artificial Intelligence
- Machine Learning
- Life Sciences
- Genomics
- Single-Cell
- Foundation Models
- Healthcare
apis: []
common:
- type: DomainSecurity
  url: security/celltype-domain-security.yml
- type: Website
  url: https://www.celltype.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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