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AsyncAPI Specification

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asyncapi logo

The AsyncAPI Specification (AAS), is a specification for a programming language-agnostic, machine-readable interface definition language for describing, producing, consuming, and visualizing event-driven services.

AsyncAPI documents describe API services and are represented in YAML or JSON formats.

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Agents365-ai / drawio-skill

Star 10.7k

Agent skill that turns natural language, code, Terraform/K8s, SQL, OpenAPI, AsyncAPI, Protobuf and GraphQL sources into editable, tested draw.io architecture diagrams: incremental sync, multi-view projection, drift diff, CI architecture tests, whiteboard derasterize, interactive HTML/PPTX/Mermaid exports.

graphql kubernetes protobuf diagram terraform architecture uml bpmn flowchart sysml architecture-diagram drawio asyncapi github-actions c4-model diagrams-as-code mcp-server agent-skills claude-code image-to-diagram
  • Updated Nov 10, 2026
  • Python

ag2ai / faststream

Star 5.4k

Asynchronous Python framework for event-driven services. A thin client for Kafka, RabbitMQ, NATS, Redis and MQTT with full access to native broker features, plus AsyncAPI docs, in-memory tests and observability out of the box.

python redis mqtt distributed-systems kafka rabbitmq nats stream-processing mqtt-broker asyncio event-driven-architecture asyncapi faststream
  • Updated Nov 12, 2026
  • Python

asyncapi / spec

Sponsor
Star 5.3k

The AsyncAPI specification allows you to create machine-readable definitions of your asynchronous APIs.

mqtt reactive kafka amqp websockets specification stomp asyncapi
  • Updated Oct 27, 2026
  • JavaScript

cortex-docs / cortex

Star 3.3k

Cortex - Generates interactive API documentation, typed SDKs, and MCP servers from OpenAPI, AsyncAPI, GraphQL, gRPC, OpenRPC, and Markdown.

graphql markdown docs protobuf mcp swagger grpc api-documentation openapi api-client code-generation sdk-generator documentation-generator asyncapi api-reference openapi-generator openrpc mcp-server mode-context-protocol
  • Updated Oct 6, 2026
  • TypeScript
eventcatalog

event-catalog / eventcatalog

Sponsor
Star 3k

Documentation tool built for software architecture. Document your domains, services, events and schemas — for your teams and your AI agents.

documentation distributed-systems microservices ai ddd architecture domain-driven-design event-driven-architecture asyncapi event-catalog
  • Updated Nov 12, 2026
  • TypeScript

microcks / microcks

Sponsor
Star 2.1k

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀

testing mock api graphql kubernetes mock-server swagger cncf openapi mocking event-driven api-testing swagger2 postman-collection openapi3 asyncapi asyncapi-specification openapi-tooling openapi31 cncf-project
  • Updated Nov 12, 2026
  • Java

standard-webhooks / standard-webhooks

Star 1.8k

The Standard Webhooks specification

api http webhooks json webhook openapi specification standard callbacks asyncapi standard-webhooks
  • Updated Nov 12, 2026
  • Java

aklivity / zilla

Star 1.7k

🦎 A lightweight, streaming-native, multi-protocol gateway for AI, APIs, and real-time data. Route LLM requests across providers, govern MCP tools, and connect Kafka, MQTT, and HTTP through one high-performance engine with shared security and observability.

mqtt iot kafka rest api-gateway proxy grpc openapi server-sent-events streaming-api event-driven-architecture asyncapi event-stream-proxy event-streaming kafka-proxy
  • Updated Nov 12, 2026
  • Java

Mermade / widdershins

Star 1.6k

OpenAPI / Swagger, AsyncAPI & Semoasa definitions to (re)Slate compatible markdown

api documentation swagger openapi slate openapi3 asyncapi semoasa
  • Updated Jun 4, 2024
  • JavaScript

Redocly / redocly-cli

Star 1.6k

⚒️ Redocly CLI makes OpenAPI easy. Lint/validate to any standard, generate beautiful docs, and more.

linter openapi cicd contract-testing swagger2 redoc openapi3 api-governance asyncapi openapi-cli redocly openapi31 arazzo
  • Updated Nov 12, 2026
  • TypeScript

asyncapi / generator

Sponsor
Star 1.1k

Use your AsyncAPI definition to generate literally anything. Markdown documentation, Node.js code, HTML documentation, anything!

nodejs documentation generator codegenerator codegen hacktoberfest asyncapi get-global-docs-autoupdate get-global-prettierignore get-global-holopin
  • Updated Oct 29, 2026
  • JavaScript

Lancetnik / Propan

Star 493

Propan is a powerful and easy-to-use Python framework for building event-driven applications that interact with any MQ Broker

python redis kafka rabbitmq amqp messaging sqs nats event-driven python-types asyncapi propan
  • Updated Oct 12, 2026
  • Python
modelina

asyncapi / modelina

Sponsor
Star 448

A library for generating typed models based on inputs such as AsyncAPI, OpenAPI, and JSON Schema documents with high customization

kotlin java go rust php typescript csharp cpp json-schema swagger codegenerator codegen openapi3 generate-code asyncapi openapi2 modelina
  • Updated Nov 11, 2026
  • TypeScript

specmatic / specmatic

Star 401

Shift-left API Integration | Auto-fix integration drift before integration. Specmatic turns API specifications into executable contracts, continuously verifying that every change made by AI coding agents and engineers stays true to the desired behaviour. Ship AI-ready APIs 10x faster, from intent to implementation, with Spec-Driven API Development.

graphql redis microservices jdbc wsdl overlay grpc openapi service-virtualization contract-testing backward-compatibility cdd openapi3 asyncapi contract-driven-development specmatic
  • Updated Nov 12, 2026
  • Kotlin

DocHubTeam / DocHub

Star 381

Управление архитектурой как кодом

swagger swagger-codegen swagger-ui mermaid application-architecture dochub asyncapi plantuml-diagrams jsonata architecture-as-code archops architecture-as-code-dsl architecture-as-code-tools architecture-as-code-toolchain dochubide
  • Updated Mar 18, 2026
  • HTML

LEGO / AsyncAPI.NET

Star 361

The AsyncAPI.NET SDK contains a useful object model for AsyncAPI documents in .NET

dotnet openapi asyncapi
  • Updated Aug 31, 2026
  • C#

springwolf / springwolf-core

Star 354

Automated documentation for event-driven applications built with Spring Boot

java kafka spring-boot springfox swagger sqs sns hacktoberfest spring-cloud-stream spring-jms documentation-generator spring-websockets-stomp ampq spring-rabbitmq spring-kafka asyncapi
  • Updated Nov 9, 2026
  • Java

Lap-Platform / LAP

Sponsor
Star 349

Your agents are guessing at APIs. Give them the actual Agent-Native spec. 1500+ API's Ready To-Use skills, Compile any API spec into a lean, agent-native format. 10× smaller. OpenAPI, GraphQL, AsyncAPI, Protobuf, Postman.

python api graphql cli open-source sdk ai protobuf mcp openapi postman developer-tools ai-agents claude asyncapi api-spec llm token-optimization agent-experience api-compression
  • Updated Oct 26, 2026
  • Python

sourcemeta / jsonschema

Sponsor
Star 316

The CLI for working with JSON Schema. Covers formatting, linting, testing, bundling, and more for both local development and CI/CD pipelines

json schema tools cpp json-schema tooling openapi schemas json-schemas jsonschema asyncapi schemastore
  • Updated Nov 9, 2026
  • C++
synapse

serverlessworkflow / synapse

Star 314

Serverless Workflow Management System (WFMS)

graphql docker kubernetes cli workflow ui rest runtime websocket grpc openapi odata asyncapi cloudevents serverless-workflow wfms
  • Updated Oct 19, 2026
  • C#

Created by AsyncAPI Initiative, Fran Méndez

Released September 20, 2017

Latest release 9 months ago

Followers
9 followers
Repository
asyncapi/spec
Website
github.com/topics/asyncapi

Related topics

avro eda event-driven event-driven-architecture json-schema openapi
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