Quarkus

Quarkus is a Kubernetes-native Java framework tailored for GraalVM and OpenJDK HotSpot, designed to build cloud-native microservices and serverless applications with fast startup times and low memory footprint.

Quarkus publishes 5 APIs on the APIs.io network, including Dev UI API, Health API, Info API, and 2 more. Tagged areas include Cloud-Native, Framework, GraalVM, Java, and Kubernetes.

The Quarkus catalog on APIs.io includes 1 Spectral governance ruleset.

Quarkus’ developer surface includes documentation, getting-started guide, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

24.2/100 emerging ▬ flat Agent 27/100 agent aware Front door AI 5/6 prominent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessFreemium

1 APIs 1 MCP Servers 3 Agent Skills

Cloud-Native FrameworkGraalVMJava Kubernetes Microservices Serverless

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 24.2/100 · emerging

Contract Quality 9.0 / 21

Developer Ergonomics 5.1 / 17

Access Clarity 0.0 / 17

Operational Transparency 1.2 / 11

Contract Governance 1.0 / 10

Discoverability 4.8 / 9

Regulatory Posture 1.8 / 15

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 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 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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/quarkus: 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 →

APIs 5

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

Quarkus Dev UI API

The Dev UI API from Quarkus — 1 operation(s) for dev ui.

Quarkus Health API

The Health API from Quarkus — 4 operation(s) for health.

Quarkus Info API

The Info API from Quarkus — 1 operation(s) for info.

Quarkus Metrics API

The Metrics API from Quarkus — 1 operation(s) for metrics.

Quarkus Open API

The Open API API from Quarkus — 2 operation(s) for open api.

Open Collections 7

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Quarkus & Health/Metrics Dev UI API

OPEN COLLECTION

Quarkus Dev UI & Health/Metrics API

OPEN COLLECTION

Quarkus & /Metrics Dev UI Health API

OPEN COLLECTION

Quarkus & Health/Metrics Dev UI Info API

OPEN COLLECTION

Quarkus & Health/ Dev UI Metrics API

OPEN COLLECTION

Quarkus & Health/Metrics Dev UI OpenAPI API

OPEN COLLECTION

Scroll for all 7

MCP Servers 1

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

MCP Server

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

hello-world

AGENT SKILL

migrate-spring-to-quarkus

AGENT SKILL

quarkus-update

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Quarkus Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Quarkus Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Quarkus Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Quarkus API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Quarkus Application Configuration

1 properties

JSON SCHEMA

Security Posture 2

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

Quarkus Domain Security

TLSv1.3 · DMARC

SECURITY

Quarkus Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Quarkus Agentic Access

9 operations

9 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

MCPServer

MCPServer

AgentSkills

AgentSkills

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: quarkus
name: Quarkus
description: Quarkus is a Kubernetes-native Java framework tailored for GraalVM and OpenJDK HotSpot, designed to build cloud-native
  microservices and serverless applications with fast startup times and low memory footprint.
type: Index
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:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/quarkus.png
tags:
- Cloud-Native
- Framework
- GraalVM
- Java
- Kubernetes
- Microservices
- Serverless
tags_raw:
- Cloud Native
- Frameworks
- GraalVM
- Java
- Kubernetes
- Microservices
- Serverless
url: https://raw.githubusercontent.com/api-evangelist/quarkus/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: quarkus:quarkus-dev-ui-api
  name: Quarkus Dev UI API
  description: The Dev UI API from Quarkus — 1 operation(s) for dev ui.
  humanURL: https://quarkus.io/
  tags:
  - Dev UI
  properties:
  - type: OpenAPI
    url: openapi/quarkus-dev-ui-api-openapi.yml
  - type: Documentation
    url: https://quarkus.io/guides/
  - type: GettingStarted
    url: https://quarkus.io/get-started/
  - type: JSONSchema
    url: json-schema/quarkus-application-properties.json
- aid: quarkus:quarkus-health-api
  name: Quarkus Health API
  description: The Health API from Quarkus — 4 operation(s) for health.
  humanURL: https://quarkus.io/
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/quarkus-health-api-openapi.yml
  - type: Documentation
    url: https://quarkus.io/guides/
  - type: GettingStarted
    url: https://quarkus.io/get-started/
  - type: JSONSchema
    url: json-schema/quarkus-application-properties.json
- aid: quarkus:quarkus-info-api
  name: Quarkus Info API
  description: The Info API from Quarkus — 1 operation(s) for info.
  humanURL: https://quarkus.io/
  tags:
  - Info
  properties:
  - type: OpenAPI
    url: openapi/quarkus-info-api-openapi.yml
  - type: Documentation
    url: https://quarkus.io/guides/
  - type: GettingStarted
    url: https://quarkus.io/get-started/
  - type: JSONSchema
    url: json-schema/quarkus-application-properties.json
- aid: quarkus:quarkus-metrics-api
  name: Quarkus Metrics API
  description: The Metrics API from Quarkus — 1 operation(s) for metrics.
  humanURL: https://quarkus.io/
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/quarkus-metrics-api-openapi.yml
  - type: Documentation
    url: https://quarkus.io/guides/
  - type: GettingStarted
    url: https://quarkus.io/get-started/
  - type: JSONSchema
    url: json-schema/quarkus-application-properties.json
- aid: quarkus:quarkus-open-api-api
  name: Quarkus Open API
  description: The Open API API from Quarkus — 2 operation(s) for open api.
  humanURL: https://quarkus.io/
  tags:
  - OpenAPI
  tags_raw:
  - Open API
  properties:
  - type: OpenAPI
    url: openapi/quarkus-open-api-api-openapi.yml
  - type: Documentation
    url: https://quarkus.io/guides/
  - type: GettingStarted
    url: https://quarkus.io/get-started/
  - type: JSONSchema
    url: json-schema/quarkus-application-properties.json
common:
- type: AgenticAccess
  url: agentic-access/quarkus-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/quarkus-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/quarkus-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/quarkusio
- type: Website
  url: https://quarkus.io/
- type: Documentation
  url: https://quarkus.io/guides/
- type: GettingStarted
  url: https://quarkus.io/get-started/
- type: GitHubOrganization
  url: https://github.com/quarkusio
- type: Blog
  url: https://quarkus.io/blog/
- name: MCP Server
  url: https://github.com/quarkusio/quarkus-agent-mcp
  type: MCPServer
- name: Agent Skills
  url: https://github.com/quarkusio/quarkus-skills
  type: AgentSkills
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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