3T Biosciences

3T Biosciences is a clinical-stage immunotherapy company based in South San Francisco, developing next-generation T-cell receptor (TCR) therapeutics for solid tumors and other immune-mediated diseases. Founded in 2017 on research from K. Christopher Garcia's lab at Stanford University, the company operates its proprietary 3T-TRACE (T-Cell Receptor Antigen and Cross-reactivity Evaluation) platform, which combines high-diversity yeast-display target libraries with active machine-learning to screen billions of protein fragments and identify novel shared TCR targets and specificities. 3T has raised a $40M Series A from Westlake Village BioPartners and Lightspeed Venture Partners and has struck cancer-immunotherapy collaborations with Boehringer Ingelheim worth up to $268M in milestones. This profile was surfaced as a portfolio company of CRV and enriched into the API Evangelist network; 3T publishes no public developer API, SDK, or specification surface.

3T Biosciences is profiled on the APIs.io network. Tagged areas include Company, Biotechnology, Immunotherapy, Oncology, and TCR Therapeutics.

3T Biosciences’ developer surface includes engineering blog, support, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

12.3/100 emerging ▬ flat Agent 0/100 human only Front door AI 1/6 silent Heartbeat 18/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessOpen

0 APIs

Company Biotechnology Immunotherapy OncologyTCR TherapeuticsCell Therapy Drug Discovery Machine Learning

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 12.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.8 / 9

Regulatory Posture 3.3 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 7.1 — up to +18.6 composite points
Access Clarity scores 21.1 — up to +15.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/3t-biosciences/apis.yml: open an issue on github.com/api-evangelist/3t-biosciences to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Cell & Gene Therapy	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Security Posture 2

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

3T Biosciences Authentication

0 schemes

SECURITY

3T Biosciences Domain Security

TLSv1.3

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

3T Biosciences Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 6

The organization behind the API

Website

About

Blog

Careers

LinkedIn

Twitter

Twitter

Other 4

Properties that don't map to a standard resource type

Hosts

Vendors

Leadership

Publications

Source (apis.yml)

aid: 3t-biosciences
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  label: Open access
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/3t-biosciences.png
name: 3T Biosciences
description: 3T Biosciences is a clinical-stage immunotherapy company based in South San Francisco, developing next-generation
  T-cell receptor (TCR) therapeutics for solid tumors and other immune-mediated diseases. Founded in 2017 on research from
  K. Christopher Garcia's lab at Stanford University, the company operates its proprietary 3T-TRACE (T-Cell Receptor Antigen
  and Cross-reactivity Evaluation) platform, which combines high-diversity yeast-display target libraries with active machine-learning
  to screen billions of protein fragments and identify novel shared TCR targets and specificities. 3T has raised a $40M Series
  A from Westlake Village BioPartners and Lightspeed Venture Partners and has struck cancer-immunotherapy collaborations with
  Boehringer Ingelheim worth up to $268M in milestones. This profile was surfaced as a portfolio company of CRV and enriched
  into the API Evangelist network; 3T publishes no public developer API, SDK, or specification surface.
url: https://raw.githubusercontent.com/api-evangelist/3t-biosciences/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- crv
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was portfolio-lead)
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Biotechnology
- Immunotherapy
- Oncology
- TCR Therapeutics
- Cell Therapy
- Drug Discovery
- Machine Learning
tags_raw:
- Company
- Biotech
- Immunotherapy
- Oncology
- TCR Therapeutics
- Cell Therapy
- Drug Discovery
- Machine Learning
- Machine-Learning
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/3t-biosciences-hosts.yml
- type: Vendors
  url: vendors/3t-biosciences-vendors.yml
- type: Leadership
  url: https://3tbiosciences.com/team/
- type: Website
  url: https://3tbiosciences.com/
- type: About
  url: https://3tbiosciences.com/about/
- type: Blog
  url: https://3tbiosciences.com/news/
- type: Publications
  url: https://3tbiosciences.com/publications/
- type: Careers
  url: https://3tbiosciences.com/careers/
- type: Support
  url: https://3tbiosciences.com/contact/
- type: PrivacyPolicy
  url: https://3tbiosciences.com/privacy-policy
- type: TermsOfService
  url: https://3tbiosciences.com/terms-of-service
- type: LinkedIn
  url: https://www.linkedin.com/company/3tbiosciences/
- type: Twitter
  url: https://twitter.com/3tbio
- type: DomainSecurity
  url: security/3t-biosciences-domain-security.yml
apis: []
x-enrichment:
  date: '2026-10-27'
  status: nochange
  artifacts_added: 0
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

3T Biosciences API — frequently asked questions

How do I authenticate with the 3T Biosciences API?

3T Biosciences documents its authentication (0 schemes). The details are profiled on APIs.io as 3T Biosciences Authentication.

Is the 3T Biosciences API ready for AI agents?

3T Biosciences has a Kin Score of 12.3 out of 100 (emerging) and an Agent Readiness score of 0.0 (human-only), scored by API Evangelist on 2026-11-06.

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get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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