Vert.x

aid: vert-x
name: Vert.x
description: Eclipse Vert.x is a toolkit for building reactive applications on the JVM, providing support for multiple languages
  including Java, JavaScript, Groovy, Ruby, and Kotlin with an event-driven, non-blocking architecture. Part of the Eclipse
  Foundation under the Eclipse Public License 2.0. Vert.x follows a polyglot, unopinionated model allowing developers to build
  microservices, web applications, IoT backends, and event-driven systems with high concurrency using a small memory footprint.
type: Index
image: https://vertx.io/images/logo-wide.png
tags:
- Event-Driven
- Frameworks
- Java
- JVM
- Microservices
- Polyglot
- Reactive
- Eclipse Foundation
- Open Source
url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-05-03'
specificationVersion: '0.19'
apis:
- aid: vert-x:vert-x-core
  name: Vert.x Core
  description: The core toolkit for building reactive, event-driven applications on the JVM. Provides the event loop, verticle
    deployment, event bus, HTTP server and client, TCP/UDP networking, and the fundamental async programming model used by
    all Vert.x components.
  humanURL: https://vertx.io/docs/vertx-core/java/
  tags:
  - Event-Driven
  - Event Loop
  - Verticles
  - Event Bus
  - Reactive
  - JVM
  properties:
  - type: Documentation
    url: https://vertx.io/docs/vertx-core/java/
  - type: GettingStarted
    url: https://vertx.io/get-started/
  - type: GitHubRepository
    url: https://github.com/eclipse-vertx/vert.x
  - type: MavenPackage
    url: https://central.sonatype.com/artifact/io.vertx/vertx-core
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/json-schema/vertx-config.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/json-structure/vertx-config-structure.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/json-schema/vertx-deployment-descriptor.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/json-structure/vertx-deployment-descriptor-structure.json
- aid: vert-x:vertx-web
  name: Vert.x Web
  description: A set of building blocks for building web applications and RESTful HTTP microservices with Vert.x. Provides
    routing, request handling, session management, template engine support, and WebSocket handling on top of Vert.x Core HTTP
    server.
  humanURL: https://vertx.io/docs/vertx-web/java/
  tags:
  - REST
  - HTTP
  - Web Framework
  - Routing
  - WebSocket
  properties:
  - type: Documentation
    url: https://vertx.io/docs/vertx-web/java/
  - type: GitHubRepository
    url: https://github.com/eclipse-vertx/vert.x
  - type: MavenPackage
    url: https://central.sonatype.com/artifact/io.vertx/vertx-web
- aid: vert-x:vertx-openapi
  name: Vert.x OpenAPI
  description: Vert.x OpenAPI provides OpenAPI 3.1 specification support for Vert.x, enabling contract-driven API development
    with automatic request/response validation, routing, and API specification serving for Vert.x Web applications.
  humanURL: https://vertx.io/docs/vertx-openapi/java/
  tags:
  - OpenAPI
  - API Specification
  - Validation
  - Contract-Driven
  properties:
  - type: Documentation
    url: https://vertx.io/docs/vertx-openapi/java/
  - type: GitHubRepository
    url: https://github.com/eclipse-vertx/vertx-openapi
  - type: MavenPackage
    url: https://central.sonatype.com/artifact/io.vertx/vertx-openapi
- aid: vert-x:vertx-grpc
  name: Vert.x gRPC
  description: A Vert.x-native gRPC implementation providing a reactive, non-blocking gRPC client and server built on top
    of Vert.x HTTP/2. Supports protobuf service definitions with Vert.x Future and stream-based APIs.
  humanURL: https://vertx.io/docs/vertx-grpc/java/
  tags:
  - gRPC
  - Protocol Buffers
  - HTTP/2
  - Streaming
  properties:
  - type: Documentation
    url: https://vertx.io/docs/vertx-grpc/java/
  - type: GitHubRepository
    url: https://github.com/eclipse-vertx/vertx-grpc
  - type: MavenPackage
    url: https://central.sonatype.com/artifact/io.vertx/vertx-grpc
- aid: vert-x:vertx-sql-client
  name: Vert.x SQL Client
  description: A high-performance reactive SQL client for Vert.x supporting PostgreSQL, MySQL, Microsoft SQL Server, IBM DB2,
    and Oracle databases. Provides a non-blocking, fully reactive API for executing queries, transactions, and batch operations.
  humanURL: https://vertx.io/docs/vertx-pg-client/java/
  tags:
  - SQL
  - Database
  - PostgreSQL
  - MySQL
  - Reactive
  properties:
  - type: Documentation
    url: https://vertx.io/docs/vertx-pg-client/java/
  - type: GitHubRepository
    url: https://github.com/eclipse-vertx/vertx-sql-client
  - type: MavenPackage
    url: https://central.sonatype.com/artifact/io.vertx/vertx-pg-client
- aid: vert-x:vertx-auth
  name: Vert.x Auth
  description: Authentication and authorization support for Vert.x applications. Provides JWT, OAuth2, JDBC, MongoDB, and
    WebAuthn/FIDO2 authentication providers with a unified async security API that integrates with Vert.x Web routing.
  humanURL: https://vertx.io/docs/vertx-auth-common/java/
  tags:
  - Authentication
  - Authorization
  - JWT
  - OAuth2
  - Security
  properties:
  - type: Documentation
    url: https://vertx.io/docs/vertx-auth-common/java/
  - type: GitHubRepository
    url: https://github.com/eclipse-vertx/vertx-auth
  - type: MavenPackage
    url: https://central.sonatype.com/artifact/io.vertx/vertx-auth-common
- aid: vert-x:vertx-health-check
  name: Vert.x Health Check
  description: A Vert.x component for implementing health check endpoints for Kubernetes liveness and readiness probes. Provides
    a composable health procedure mechanism that aggregates multiple health checks into a single HTTP endpoint response.
  humanURL: https://vertx.io/docs/vertx-health-check/java/
  tags:
  - Health Check
  - Kubernetes
  - Observability
  - Liveness
  - Readiness
  properties:
  - type: Documentation
    url: https://vertx.io/docs/vertx-health-check/java/
  - type: GitHubRepository
    url: https://github.com/eclipse-vertx/vertx-health-check
  - type: MavenPackage
    url: https://central.sonatype.com/artifact/io.vertx/vertx-health-check
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/json-schema/vertx-health-check-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/json-structure/vertx-health-check-structure.json
common:
- type: Website
  url: https://vertx.io/
- type: Documentation
  url: https://vertx.io/docs/
- type: GettingStarted
  url: https://vertx.io/get-started/
- type: GitHubOrganization
  url: https://github.com/eclipse-vertx
- type: Blog
  url: https://vertx.io/blog/
- type: PrivacyPolicy
  url: https://www.eclipse.org/legal/privacy.php
- type: TermsOfService
  url: https://www.eclipse.org/legal/termsofuse.php
- type: License
  url: https://www.eclipse.org/legal/epl-2.0/
- type: ChangeLog
  url: https://github.com/eclipse-vertx/vert.x/blob/master/CHANGELOG.adoc
- type: MavenCentral
  url: https://central.sonatype.com/search?q=io.vertx
- type: Forums
  url: https://groups.google.com/forum/#!forum/vertx
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/vert.x
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/vocabulary/vert-x-vocabulary.yaml
- type: SpectralRules
  url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/rules/vert-x-spectral-rules.yml
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/vert-x/refs/heads/main/json-ld/vert-x-context.jsonld
- type: Features
  data:
  - name: Event-Driven Architecture
    description: Non-blocking event loop model with verticles for concurrent request handling without traditional threading
      overhead.
  - name: Polyglot Support
    description: Write Vert.x applications in Java, JavaScript, Groovy, Kotlin, Scala, and Ruby on the same JVM platform.
  - name: Event Bus
    description: Distributed message-passing backbone enabling communication between verticles across nodes in a cluster.
  - name: Reactive HTTP Client and Server
    description: High-performance HTTP/1.1 and HTTP/2 server and client with WebSocket, SSE, and gRPC support.
  - name: OpenAPI Contract Validation
    description: Automatic request and response validation against OpenAPI 3.1 specifications using vertx-openapi.
  - name: Reactive SQL Clients
    description: Non-blocking, fully reactive SQL clients for PostgreSQL, MySQL, MSSQL, DB2, and Oracle.
  - name: Authentication and Authorization
    description: Pluggable security providers for JWT, OAuth2, JDBC, MongoDB, LDAP, and WebAuthn/FIDO2.
  - name: Health Checks
    description: Composable health check procedures for Kubernetes liveness and readiness probe endpoints.
  - name: Clustering
    description: Built-in cluster support via Hazelcast, Infinispan, Zookeeper, or Apache Ignite for distributed deployments.
  - name: Virtual Threads
    description: Java 21 virtual thread support enabling synchronous-style code in Vert.x worker verticles.
- type: UseCases
  data:
  - name: Microservices Backend
    description: Build lightweight, high-concurrency microservices with Vert.x Web routing, service proxy patterns, and event
      bus communication.
  - name: API Gateway
    description: Implement reactive API gateways using vertx-http-proxy with routing, authentication, and rate limiting.
  - name: Real-Time Applications
    description: Build WebSocket and SSE-based real-time applications for live dashboards, chat, and notification systems.
  - name: IoT Data Ingestion
    description: Handle high-volume MQTT and TCP data streams from IoT devices using Vert.x non-blocking networking.
  - name: Contract-First REST APIs
    description: Develop OpenAPI 3.1 contract-first REST APIs with automatic validation using vertx-openapi and vertx-web.
- type: Integrations
  data:
  - name: Quarkus
    description: Vert.x is the reactive engine underlying Quarkus, providing the event loop and HTTP server for Quarkus applications.
  - name: Kubernetes
    description: Deploy Vert.x verticles on Kubernetes with health check endpoints, clustering, and horizontal pod autoscaling.
  - name: Apache Kafka
    description: Vert.x Kafka Client provides reactive, non-blocking Kafka producer and consumer integration.
  - name: Redis
    description: Vert.x Redis Client enables async Redis operations for caching, pub/sub, and session storage.
  - name: Hazelcast
    description: Hazelcast cluster manager for distributed Vert.x deployments with shared data and event bus clustering.
  - name: Micrometer
    description: Vert.x Micrometer Metrics provides application metrics integration with Prometheus and Grafana.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com