Ampersand Biomedicines

Ampersand Biomedicines is a Boston-based biotechnology company founded in 2020 out of Flagship Pioneering that designs programmable biologic medicines intended to act only at the site of disease. Its computationally powered Address, Navigate, Determine (AND) Platform pairs a multi-omics "Address Map" of healthy and diseased human tissue with high-throughput microfluidic binder generation and AI-guided binder prediction to design AND-Body therapeutics, which combine a localizing element with an actuator so activity is conditional on the target tissue. The company raised a $65M Series B in March 2025 from Flagship Pioneering and Eli Lilly, and partners with Pioneering Medicines and Pfizer. It is a preclinical therapeutics developer, not a software vendor: the computational platform is internal tooling for its own drug discovery and is not offered to third parties, and the company publishes no public API, developer portal, SDK, or machine-readable specification.

Ampersand Biomedicines is profiled on the APIs.io network. Tagged areas include Company, Biotechnology, Therapeutics, Drug Discovery, and Life Sciences.

Ampersand Biomedicines’ developer surface includes engineering blog and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

6.7/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Biotechnology Therapeutics Drug Discovery Life Sciences Computational Biology Precision Medicine Flagship Pioneering

Kin Score

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

Composite quality — 6.7/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 1.9 / 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/ampersand-biomedicines: 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.

Ampersand Biomedicines Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 6

The organization behind the API

Website

Website

Blog

Blog

Careers

Careers

LinkedIn

Twitter

Twitter

Investor

Investor

Other 2

Properties that don't map to a standard resource type

CookiePolicy

CookiePolicy

Profile

Profile

Source (apis.yml)

aid: ampersand-biomedicines
name: Ampersand Biomedicines
description: 'Ampersand Biomedicines is a Boston-based biotechnology company founded in 2020 out of Flagship Pioneering that
  designs programmable biologic medicines intended to act only at the site of disease. Its computationally powered Address,
  Navigate, Determine (AND) Platform pairs a multi-omics "Address Map" of healthy and diseased human tissue with high-throughput
  microfluidic binder generation and AI-guided binder prediction to design AND-Body therapeutics, which combine a localizing
  element with an actuator so activity is conditional on the target tissue. The company raised a $65M Series B in March 2025
  from Flagship Pioneering and Eli Lilly, and partners with Pioneering Medicines and Pfizer. It is a preclinical therapeutics
  developer, not a software vendor: the computational platform is internal tooling for its own drug discovery and is not offered
  to third parties, and the company publishes no public API, developer portal, SDK, or machine-readable specification.'
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:
  - security
  generated: '2026-09-02'
  method: derived
image: https://cdn.prod.website-files.com/62e1567a532ab570f765e32c/63beca5200a95d31d65346ad_Ampersand-logo-color.svg
url: https://raw.githubusercontent.com/api-evangelist/ampersand-biomedicines/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.23'
x-enrichment:
  date: '2026-08-06'
  status: minimal
  artifacts_added: 2
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Ampersand Biomedicines is a preclinical therapeutics developer whose AND Platform is internal drug-discovery tooling,
    not a product — the corporate site at ampersand.bio has only Science, Pipeline, Team, News, Careers and Contact sections,
    no api/docs/developer subdomain resolves in DNS, and every contract-discovery path returned 404.
  evidence:
  - url: https://www.ampersand.bio/
    status: 200
  - url: https://www.ampersand.bio/openapi.json
    status: 404
  - url: https://www.ampersand.bio/llms.txt
    status: 404
  - url: https://www.ampersand.bio/.well-known/agent-card.json
    status: 404
  - url: https://www.ampersand.bio/.well-known/security.txt
    status: 404
  checked: '2026-08-06'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Biotechnology
- Therapeutics
- Drug Discovery
- Life Sciences
- Computational Biology
- Precision Medicine
- Flagship Pioneering
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/ampersand-biomedicines-domain-security.yml
- type: Website
  url: https://www.ampersand.bio/
- type: Blog
  url: https://www.ampersand.bio/news
- type: Contact
  url: https://www.ampersand.bio/contact
- type: PrivacyPolicy
  url: https://www.ampersand.bio/privacy-policy
- type: CookiePolicy
  url: https://www.ampersand.bio/cookie-policy
- type: Careers
  url: https://www.ampersand.bio/careers
- type: LinkedIn
  url: https://www.linkedin.com/company/ampersand-biomedicines
- type: Twitter
  url: https://twitter.com/AmpersandBio
- type: Investor
  url: https://www.flagshippioneering.com/companies/ampersand-biomedicines
- type: Profile
  url: https://forgeglobal.com/ampersand-biomedicines_stock/

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