Event-Driven
Infrastructure for
the Agent Era
Apache EventMesh is a cloud-native event middleware that connects services, systems, and AI agents through a unified event bus. Serverless, scalable, and protocol-agnostic — built for the next generation of distributed applications.
Everything you need for
event-driven architecture
From simple pub/sub to complex event orchestration, EventMesh provides the building blocks for resilient, scalable, and decoupled distributed systems.
High-Throughput Eventing
Millions of events per second with sub-millisecond latency. Powered by pluggable event stores including RocketMQ, Kafka, and AutoMQ.
CloudEvents Native
First-class support for CNCF CloudEvents specification. Standardized event format across all connectors and protocols.
Multi-Protocol Gateway
HTTP, gRPC, TCP, and WebSocket protocols unified into one event mesh. Seamless protocol translation without code changes.
Event Orchestration
Built-in event workflow engine based on Serverless Workflow. Define complex event choreography with declarative YAML.
Reliable Delivery Guarantees
At-least-once, at-most-once, and exactly-once delivery semantics. Event store with retry, dead letter queue, and transaction support.
Security & Governance
mTLS, OAuth2, and RBAC built-in. Event schema registry, audit logging, and rate limiting for production-grade security.
Layered design for
maximum flexibility
Four decoupled layers — each independently scalable and replaceable. Mix and match connectors, protocols, and event stores to fit your infrastructure.
A2A Protocol Support
Agent Message Bus
EventMesh is evolving beyond traditional event middleware into a unified message bus for AI agent-to-agent communication, powered by the A2A (Agent-to-Agent) protocol.
- Agent Discovery & Routing — Agents register capabilities and discover peers dynamically through the event mesh
- Async Task Delegation — Long-running agent tasks with callback-based event completion semantics
- Streaming Communication — SSE and gRPC streaming for real-time agent interactions
- Protocol Bridge — Seamlessly bridge A2A with existing CloudEvents and legacy messaging systems
- Observability — OpenTelemetry-native tracing across the entire agent communication chain
Connects to everything
Connectors out of the box. EventMesh integrates with your existing infrastructure — no rip-and-replace required.
Up and running
in under a minute
Deploy EventMesh with Docker, publish your first event, and subscribe to it — all with a few lines of code. No complex setup required.
# Publish a CloudEvent via HTTP curl -X POST http://127.0.0.1:10105/eventmesh/publish/TEST-TOPIC-HTTP-ASYNC -H "Content-Type: application/json" -d '{ "name": "eventmesh", "pass": "password" }' # Response: { "success": true, "retCode": 0 } 🚀 Event published!
Join the EventMesh Community
Apache EventMesh is an Apache Software Foundation top-level project. Join 300+ contributors building the future of event-driven infrastructure.