Qt

Qt Group is a global software company that builds cross-platform development, design, and quality-assurance tools used across more than 70 industries and billions of devices. Its portfolio spans the Qt Framework (cross-platform C++ software libraries and APIs), the Qt Creator IDE, Qt for MCUs, Qt Design Studio, and the quality-assurance suite (Squish GUI test automation, Coco code coverage, Test Center, and Axivion static analysis). Qt does not publish a public REST/HTTP API; its "APIs" are C++/QML/Python library APIs shipped with the framework, with the official Python bindings (PySide6/PySide2) distributed on PyPI. Documentation, learning, and support are provided through doc.qt.io, the Qt Academy, and forum.qt.io.

Qt is profiled on the APIs.io network. Tagged areas include Company, Enterprise, Developer Tools, Cross-Platform, and Framework.

Qt’s developer surface includes documentation, engineering blog, support, pricing, signup flow, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

18.6/100 emerging ▬ flat Agent 0/100 human only Front door AI 3/6 light Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs

Company Enterprise Developer Tools Cross-Platform Framework SDK IDE Quality Assurance UI Design Embedded

Kin Score

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

Composite quality — 18.6/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 7.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 4.1 / 9

Regulatory Posture 2.1 / 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 23.8 — up to +15.2 composite points
Operational Transparency scores 2.6 — up to +12.7 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/qt/apis.yml: open an issue on github.com/api-evangelist/qt 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
Agent Skills (SKILL.md packages)	builds-on	51.8	1	1
IDE Extension Marketplaces (JetBrains, VS Code, Open VSX, Docker Verified Publishers, PyPI orgs)	builds-on	51.8	1	1
Vulnerability Disclosure (CVE Numbering Authorities, FIRST member teams; CISA KEV exposure)	builds-on	51.8	1	1
Flathub Linux App Publishers (company-published, domain-verified Linux desktop apps)	builds-on	51.8	1	1

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 1

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

Qt Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

Community

Community

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Source (apis.yml)

aid: qt
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
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/qt.png
name: Qt
description: Qt Group is a global software company that builds cross-platform development, design, and quality-assurance tools
  used across more than 70 industries and billions of devices. Its portfolio spans the Qt Framework (cross-platform C++ software
  libraries and APIs), the Qt Creator IDE, Qt for MCUs, Qt Design Studio, and the quality-assurance suite (Squish GUI test
  automation, Coco code coverage, Test Center, and Axivion static analysis). Qt does not publish a public REST/HTTP API; its
  "APIs" are C++/QML/Python library APIs shipped with the framework, with the official Python bindings (PySide6/PySide2) distributed
  on PyPI. Documentation, learning, and support are provided through doc.qt.io, the Qt Academy, and forum.qt.io.
url: https://raw.githubusercontent.com/api-evangelist/qt/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- northzone
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Enterprise
- Developer Tools
- Cross-Platform
- Framework
- SDK
- IDE
- Quality Assurance
- UI Design
- Embedded
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- url: https://www.qt.io/blog/rss.xml
  type: BlogRSS
- type: Website
  url: https://www.qt.io
- type: Documentation
  url: https://doc.qt.io
- type: Blog
  url: https://www.qt.io/blog
- type: Support
  url: https://www.qt.io/qt-support
- type: Community
  url: https://forum.qt.io
- type: Pricing
  url: https://www.qt.io/pricing
- type: SignUp
  url: https://account.qt.io
- type: TermsOfService
  url: https://www.qt.io/terms-conditions
- type: PrivacyPolicy
  url: https://www.qt.io/terms-conditions/privacy-policy
- type: GitHubOrganization
  url: https://github.com/qt
- type: Packages
  url: packages/qt-packages.yml
- type: SDKs
  url: packages/qt-packages.yml
- type: DomainSecurity
  url: security/qt-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 2
  pass: local-v1

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apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
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