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AsyncAPI Specification

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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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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.

  • Updated Oct 11, 2026
  • Python

🦎 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.

  • Updated Oct 22, 2026
  • Java

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.

  • Updated Oct 22, 2026
  • Kotlin

Created by AsyncAPI Initiative, Fran Méndez

Released September 20, 2017

Latest release 9 months ago

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Repository
asyncapi/spec
Website
github.com/topics/asyncapi

Related topics

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