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 API contracts indexed 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 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.3/100 thin ▬ flat Agent 27/100 agent aware Front door AI 5/6 prominent Heartbeat 98/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract 1 MCP Servers 3 Agent Skills

Cloud-Native FrameworkGraalVMJava Kubernetes Microservices Serverless

Kin Score

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

Composite quality — 27.3/100 · thin

Contract Quality 9.0 / 21

Developer Ergonomics 5.1 / 17

Access Clarity 1.3 / 17

Operational Transparency 2.3 / 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

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 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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

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)
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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Contract Quality scores 42.2 — up to +14.5 composite points
Developer Ergonomics scores 30.2 — up to +14.0 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/quarkus/apis.yml: open an issue on github.com/api-evangelist/quarkus 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
Cloud Native (Kubernetes, CNCF, FinOps)	standard	40.7	-	1
Raycast Store Extensions (first-party publishers + community-wrapped products)	standard	40.7	-	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.

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 (documented)

OpenAPI

measured — observed by APIs.io (published)

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 6

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

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

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

Quarkus API pricing

Not yet checked against Quarkus's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Quarkus's documentation. All 5 limits →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Quarkus

SLA

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 — jsonschema 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

no policy recorded

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

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

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: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  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: Plans
  url: plans/quarkus-plans-pricing.yml
- type: RateLimits
  url: rate-limits/quarkus-rate-limits.yml
- type: FinOps
  url: finops/quarkus-finops.yml
- 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

Quarkus API — frequently asked questions

Does Quarkus have an API?

Yes. APIs.io lists 5 APIs from Quarkus, including Quarkus Dev UI API, Quarkus Health API and Quarkus Info API, and 2 more.

Is there an OpenAPI specification for the Quarkus API?

Yes. APIs.io indexes 5 OpenAPI specifications for Quarkus, each linked for download from this page.

How much does the Quarkus API cost?

APIs.io lists 3 pricing plans for Quarkus, with each plan's price, limits and inclusions under Pricing on this page.

Does Quarkus have an MCP server?

Yes. APIs.io lists 1 MCP server for Quarkus.

Is the Quarkus API ready for AI agents?

Quarkus has a Kin Score of 27.3 out of 100 (thin) and an Agent Readiness score of 27.0 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

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Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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