Aro Biotherapeutics

Aro Biotherapeutics is a Philadelphia-based biotechnology company developing tissue-targeted genetic medicines built on Centyrins, a proprietary engineered human protein scaffold that is small, stable and highly soluble. Aro conjugates Centyrins to oligonucleotide payloads (Centyrin-siRNA conjugates) to deliver RNA- and DNA-based therapeutics precisely to cells and tissues outside the liver, including muscle and immune cells. Its lead program, ABX1100, is a CD71-targeted Centyrin-siRNA conjugate for Pompe disease that has received FDA orphan drug designation. The company is privately held, raised a $41.5M Series B led by Cowen Healthcare Investments with participation from Johnson & Johnson Innovation, and is headquartered at 601 Walnut Street, Philadelphia, PA. Aro publishes no developer program, API reference or SDK; the only machine-readable surface on its domain is the Wix-platform llms.txt and Site MCP endpoint.

Aro Biotherapeutics is listed with 1 API on the APIs.io network. Tagged areas include Company, Biotechnology, Therapeutics, Genetic Medicine, and Life Sciences.

Aro Biotherapeutics’ developer surface includes authentication, engineering blog, support, and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.8/100 emerging ▬ flat Agent 5/100 human only Front door AI 1/6 silent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API 1 MCP Servers

Company Biotechnology Therapeutics Genetic Medicine Life Sciences Pharmaceuticals MCP

Kin Score

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

Composite quality — 18.8/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.4 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 5/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 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 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/.

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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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

11 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 19.0 — up to +16.2 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/aro-biotherapeutics/apis.yml: open an issue on github.com/api-evangelist/aro-biotherapeutics 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 →

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (platform)

Universal Commerce Protocol (UCP)

measured — observed by APIs.io (wix)

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Aro Biotherapeutics Site MCP

A live, anonymously reachable Model Context Protocol endpoint served from Aro Biotherapeutics' own host and advertised in the site's llms.txt. It is provided by the Wix platform...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

ARO Live

Remote MCP server at www.arobiotx.com over HTTP; 9 tools listed.

MCP SERVER

Security Posture 2

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

Aro Biotherapeutics Authentication

none/session-token · 2 schemes

SECURITY

Aro Biotherapeutics Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: aro-biotherapeutics
name: Aro Biotherapeutics
description: Aro Biotherapeutics is a Philadelphia-based biotechnology company developing tissue-targeted genetic medicines
  built on Centyrins, a proprietary engineered human protein scaffold that is small, stable and highly soluble. Aro conjugates
  Centyrins to oligonucleotide payloads (Centyrin-siRNA conjugates) to deliver RNA- and DNA-based therapeutics precisely to
  cells and tissues outside the liver, including muscle and immune cells. Its lead program, ABX1100, is a CD71-targeted Centyrin-siRNA
  conjugate for Pompe disease that has received FDA orphan drug designation. The company is privately held, raised a $41.5M
  Series B led by Cowen Healthcare Investments with participation from Johnson & Johnson Innovation, and is headquartered
  at 601 Walnut Street, Philadelphia, PA. Aro publishes no developer program, API reference or SDK; the only machine-readable
  surface on its domain is the Wix-platform llms.txt and Site MCP endpoint.
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: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: covered
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://static.wixstatic.com/media/55e8e9_a8e1814d42074178825df49af5a75963~mv2.jpg/v1/fill/w_1851,h_930,al_c/55e8e9_a8e1814d42074178825df49af5a75963~mv2.jpg
url: https://raw.githubusercontent.com/api-evangelist/aro-biotherapeutics/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Biotechnology
- Therapeutics
- Genetic Medicine
- Life Sciences
- Pharmaceuticals
- MCP
tags_raw:
- Company
- Biotechnology
- Therapeutics
- Genetic Medicine
- Life Sciences
- Pharmaceuticals
- Model Context Protocol
apis:
- aid: aro-biotherapeutics:site-mcp
  name: Aro Biotherapeutics Site MCP
  description: A live, anonymously reachable Model Context Protocol endpoint served from Aro Biotherapeutics' own host and
    advertised in the site's llms.txt. It is provided by the Wix platform, not built by Aro — it exposes generic Wix site
    tools (business details, site search, site API docs search, visitor-token issuance and a Wix REST API call/execute bridge)
    over the public content of www.arobiotx.com. A tools/list call returns 9 tools with real JSON Schema inputs. There is
    no Aro-authored API behind it.
  humanURL: https://www.arobiotx.com/
  baseURL: https://www.arobiotx.com/_api/mcp
  tags:
  - MCP
  - Websites
  tags_raw:
  - Model Context Protocol
  - Website
  properties:
  - type: MCPServer
    url: mcp/aro-biotherapeutics-mcp.yml
  - type: LLMsTxt
    url: llms/aro-biotherapeutics-llms.txt
  - type: Authentication
    url: authentication/aro-biotherapeutics-authentication.yml
  x-surface: platform-generated
  x-platform: wix
  x-platform-surface: site-mcp
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-08-06'
  status: enriched
  artifacts_added: 7
  pass: local-v1
x-coverage:
  state: covered
  reason: covered
  detail: Aro Biotherapeutics runs no developer programme and publishes no OpenAPI or SDK, but its Wix-hosted site does serve
    a real llms.txt and a live, anonymously callable Site MCP endpoint at /_api/mcp that returns 9 tools with JSON Schema
    inputs — both captured verbatim.
  evidence:
  - url: https://www.arobiotx.com/llms.txt
    status: 200
  - url: https://www.arobiotx.com/_api/mcp
    status: 200
  - url: https://www.arobiotx.com/openapi.json
    status: 400
  - url: https://www.arobiotx.com/.well-known/agent-card.json
    status: 400
  checked: '2026-08-06'
common:
- type: Website
  url: https://www.arobiotx.com/
- type: MCPServer
  url: mcp/aro-biotherapeutics-mcp.yml
- type: LLMsTxt
  url: llms/aro-biotherapeutics-llms.txt
- type: Authentication
  url: authentication/aro-biotherapeutics-authentication.yml
- type: Conformance
  url: conformance/aro-biotherapeutics-conformance.yml
- type: DomainSecurity
  url: security/aro-biotherapeutics-domain-security.yml
- type: Blog
  url: https://www.arobiotx.com/newsroom
- type: Support
  url: https://www.arobiotx.com/contact
- type: TermsOfService
  url: https://www.arobiotx.com/legal-notices
- type: PrivacyPolicy
  url: https://www.arobiotx.com/privacy-policy

Aro Biotherapeutics API — frequently asked questions

Does Aro Biotherapeutics have an API?

Yes. APIs.io lists 1 API from Aro Biotherapeutics, including Aro Biotherapeutics Site MCP.

How do I authenticate with the Aro Biotherapeutics API?

Aro Biotherapeutics uses bearer-token authentication (none/session-token · 2 schemes). The details are profiled on APIs.io as Aro Biotherapeutics Authentication.

Does Aro Biotherapeutics have an MCP server?

Yes. APIs.io lists 1 MCP server for Aro Biotherapeutics: Remote MCP server at www.arobiotx.com over HTTP; 9 tools listed.

Is the Aro Biotherapeutics API ready for AI agents?

Aro Biotherapeutics has a Kin Score of 18.8 out of 100 (emerging) and an Agent Readiness score of 4.7 (human-only), scored by API Evangelist on 2026-11-06.

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