Instylla

Instylla, Inc. is a privately held medical device company headquartered in Bedford, Massachusetts, founded in 2017 by Incept LLC to develop next-generation resorbable liquid embolic agents for interventional radiology, with initial clinical applications in interventional oncology and peripheral hemostasis. Its flagship product, the Embrace Hydrogel Embolic System, received U.S. FDA premarket approval (PMA) in August 2025 for the embolization of hypervascular tumors in peripheral arteries of 5 mm or less, and began commercial use in January 2026; the company also markets the FDA-cleared Tembo Embolic System. Embrace is delivered as two injectable polyethylene-glycol precursors that crosslink in the vessel lumen into a soft hydrogel and then resorb by hydrolysis over roughly eleven months. Instylla is a device manufacturer rather than a software vendor: it publishes no developer program, no public API, and no machine-readable interface contract.

Instylla is profiled on the APIs.io network. Tagged areas include Company, Medical Devices, Healthcare, Interventional Radiology, and Oncology.

Instylla’s developer surface includes engineering blog and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

3.3/100 minimal ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

0 APIs

Company Medical Devices HealthcareInterventional RadiologyOncologyEmbolizationLife Sciences Biomaterials

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 3.3/100 · 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 1.1 / 15

Agent readiness — 3/100 · 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 4 / 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/instylla: 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.

Instylla Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ContactUs

ContactUs

Company 7

The organization behind the API

Website

About

Blog

BlogRSS

Careers

LinkedIn

Twitter

Twitter

Scroll for all 7

Other 2

Properties that don't map to a standard resource type

CaseStudies

CaseStudies

SecondaryMarketListing

SecondaryMarketListing

Source (apis.yml)

aid: instylla
name: Instylla
description: 'Instylla, Inc. is a privately held medical device company headquartered in Bedford, Massachusetts, founded in
  2017 by Incept LLC to develop next-generation resorbable liquid embolic agents for interventional radiology, with initial
  clinical applications in interventional oncology and peripheral hemostasis. Its flagship product, the Embrace Hydrogel Embolic
  System, received U.S. FDA premarket approval (PMA) in August 2025 for the embolization of hypervascular tumors in peripheral
  arteries of 5 mm or less, and began commercial use in January 2026; the company also markets the FDA-cleared Tembo Embolic
  System. Embrace is delivered as two injectable polyethylene-glycol precursors that crosslink in the vessel lumen into a
  soft hydrogel and then resorb by hydrolysis over roughly eleven months. Instylla is a device manufacturer rather than a
  software vendor: it publishes no developer program, no public API, and no machine-readable interface contract.'
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://instylla.com/wp-content/uploads/2021/08/Instyla-Social-Share-Image-v2.jpg
url: https://raw.githubusercontent.com/api-evangelist/instylla/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-08-23'
modified: '2026-08-23'
tags:
- Company
- Medical Devices
- Healthcare
- Interventional Radiology
- Oncology
- Embolization
- Life Sciences
- Biomaterials
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/instylla-domain-security.yml
- type: Website
  url: https://instylla.com/
- type: About
  url: https://instylla.com/about/
- type: Blog
  url: https://instylla.com/press-releases/
- type: BlogRSS
  url: https://instylla.com/feed/
- type: ContactUs
  url: https://instylla.com/contact/
- type: Careers
  url: https://instylla.com/careers/
- type: CaseStudies
  url: https://instylla.com/case-studies/
- type: LinkedIn
  url: https://www.linkedin.com/company/instylla/
- type: Twitter
  url: https://twitter.com/instylla
- type: SecondaryMarketListing
  url: https://forgeglobal.com/instylla_stock/
x-enrichment:
  date: '2026-08-23'
  status: minimal
  artifacts_added: 3
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Instylla is an FDA-PMA medical device manufacturer whose product is an injectable hydrogel embolic agent, not software;
    its entire web presence is a seven-page WordPress marketing site (Solutions / Clinical Study / Case Studies / About /
    News / Careers / Contact) whose only login is a clinical "Study Portal" for trial sites, and the full Wayback URL inventory
    for instylla.com contains no developer, docs or API path ever.
  evidence:
  - url: https://instylla.com/openapi.json
    status: 202
  - url: https://instylla.com/.well-known/agent-card.json
    status: 202
  - url: https://api.github.com/search/repositories?q=instylla
    status: 200
  - url: https://pypi.org/pypi/instylla/json
    status: 404
  checked: '2026-08-23'

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