ThirtyFiveBio

ThirtyFiveBio is an Oxford, UK biotechnology company founded in 2021 to develop first-in-class small-molecule inhibitors of G protein-coupled receptor 35 (GPR35) for the treatment of gastrointestinal diseases, including ulcerative colitis, inflammatory bowel disease, and digestive-tract cancers. The company was incubated by the M:M Bio (Molecule to Medicine) drug-discovery ecosystem together with Canaan Partners, and is backed by AbbVie Ventures, Mayewell Capital, and Innovate UK. It is a preclinical drug-discovery company with plans for first-in-human trials, not a software or API provider; this profile carries no developer API surface.

ThirtyFiveBio is profiled on the APIs.io network. Tagged areas include Company, Biotechnology, Pharmaceuticals, Drug Discovery, and Gastrointestinal.

🌐 Visit website 📡 Source on GitHub

2.2/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Biotechnology Pharmaceuticals Drug DiscoveryGastrointestinalLife Sciences Healthcare Therapeutics

Kin Score

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

Composite quality — 2.2/100 · 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 0.0 / 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/thirtyfivebio: 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 →

Resources

Company 2

The organization behind the API

Website

Website

About

About

Source (apis.yml)

aid: thirtyfivebio
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/thirtyfivebio.png
name: ThirtyFiveBio
description: ThirtyFiveBio is an Oxford, UK biotechnology company founded in 2021 to develop first-in-class small-molecule
  inhibitors of G protein-coupled receptor 35 (GPR35) for the treatment of gastrointestinal diseases, including ulcerative
  colitis, inflammatory bowel disease, and digestive-tract cancers. The company was incubated by the M:M Bio (Molecule to
  Medicine) drug-discovery ecosystem together with Canaan Partners, and is backed by AbbVie Ventures, Mayewell Capital, and
  Innovate UK. It is a preclinical drug-discovery company with plans for first-in-human trials, not a software or API provider;
  this profile carries no developer API surface.
url: https://raw.githubusercontent.com/api-evangelist/thirtyfivebio/refs/heads/main/apis.yml
x-api-posture: no-product-api
x-api-posture-basis: observed
x-api-posture-note: It is a preclinical drug-discovery company with plans for first-in-human trials, not a software or API
  provider; this profile carries no developer API surface.
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Biotechnology
- Pharmaceuticals
- Drug Discovery
- Gastrointestinal
- Life Sciences
- Healthcare
- Therapeutics
apis: []
common:
- type: Website
  url: https://www.thirtyfivebio.com/
- type: About
  url: https://www.thirtyfivebio.com/about
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: nochange
  artifacts_added: 0
  pass: local-v1

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