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 publishes 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 📡 Source on GitHub

20.4/100 emerging ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0

1 APIs 1 MCP Servers

CompanyBiotechnologyTherapeuticsGenetic MedicineLife SciencesPharmaceuticalsModel Context Protocol

Kin Score

Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0

Composite quality — 20.4/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.4 / 17

Commercial Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Governance 1.3 / 10

Discoverability 6.5 / 9

Regulatory Posture 4.7 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

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

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.

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/. This rating is computed from github.com/api-evangelist/aro-biotherapeutics: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

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.

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.
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: '0.20'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- 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:
  - 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
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