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Apache EventMesh website screenshot

Apache EventMesh

Apache EventMesh is a dynamic event-driven application runtime used to decouple the application and backend middleware layer, providing a serverless platform for building distributed event-driven architectures with support for CloudEvents and multiple messaging protocols including HTTP, TCP, and gRPC.

agent aware

Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.

Kin Score

API Evangelist profiles Apache EventMesh the way a machine reads it — 47 machine-readable artifacts across 7 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Apache EventMesh scores 52.4/100 (developing), with a separate agent-readiness read of 44/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 52.4/100 · developing
Contract Quality 16.3 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 9.5 / 12
Discoverability 8.8 / 10
Agent readiness — 44/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Apache EventMesh

Each block below is one kind of artifact we hold for Apache EventMesh. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 7

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Apache EventMesh Messaging API

Event-driven messaging via TCP, HTTP, and gRPC protocols. Events follow the CloudEvents specification. Supports pub-sub, request-reply, and broadcast messaging patterns.

Apache EventMesh Client API

The Client API from Apache EventMesh — 1 operation(s) for client.

Apache EventMesh Event API

The Event API from Apache EventMesh — 2 operation(s) for event.

Apache EventMesh Monitoring API

The Monitoring API from Apache EventMesh — 2 operation(s) for monitoring.

Apache EventMesh Registry API

The Registry API from Apache EventMesh — 1 operation(s) for registry.

Apache EventMesh Subscription API

The Subscription API from Apache EventMesh — 1 operation(s) for subscription.

Apache EventMesh Topic API

The Topic API from Apache EventMesh — 3 operation(s) for topic.

Scroll within the panel for all 7 ·

Open Collections 1

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

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

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Apache Event Mesh Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

Cost, billing, and metering signals for API financial operations.

Features 7

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

Notable capabilities this provider offers.

CloudEvents Support

Native CloudEvents specification support for standardized event envelopes across all messaging protocols.

Multi-Protocol Messaging

Support for HTTP, TCP, and gRPC messaging protocols enabling flexible client connectivity.

Pub-Sub Messaging

Publish-subscribe messaging pattern with topic-based routing for event-driven architectures.

Request-Reply Pattern

Synchronous request-reply messaging over asynchronous infrastructure for RPC-style interactions.

Event Store

Durable event storage with replay capability for reliable event delivery and audit trails.

Workflow Orchestration

Event-driven workflow engine for coordinating distributed business processes and sagas.

Multi-Runtime Support

Pluggable connector model supporting Kafka, RocketMQ, Pulsar, and other messaging backends.

Scroll within the panel for all 7 ·

Event Specifications 1

Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Apache EventMesh Messaging API

Apache EventMesh provides event-driven messaging via multiple protocols including TCP, HTTP, and gRPC. Events follow the CloudEvents specification. EventMesh decouples event pro...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Apache Event Mesh Admin Context

5 classes · 21 properties

JSON-LD

Spectral Rules 3

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

Apache EventMesh API Rules

2 rules · 2 warnings

SPECTRAL

Apache EventMesh API Rules

5 rules · 4 warnings

SPECTRAL

Apache EventMesh API Rules

14 rules · 4 errors · 9 warnings

SPECTRAL

JSON Schema 5

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

Standalone JSON Schema definitions for this provider's data models.

CloudEvents v1.0

10 properties

JSON SCHEMA

ApiResponse

2 properties

JSON SCHEMA

Client

8 properties

JSON SCHEMA

CloudEvent

10 properties

JSON SCHEMA

Subscription

4 properties

JSON SCHEMA

JSON Structure 4

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Eventmesh Admin Api Response Structure

2 properties

JSON STRUCTURE

Eventmesh Admin Client Structure

8 properties

JSON STRUCTURE

Eventmesh Admin Cloud Event Structure

10 properties

JSON STRUCTURE

Eventmesh Admin Subscription Structure

4 properties

JSON STRUCTURE

Examples 4

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Apache Event Mesh Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Apache Event Mesh Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Apache Event Mesh Agentic Access

10 operations · 4 acting

10 operations · 4 acting

AGENTIC

Use Cases 4

What developers actually build with this provider — captured so the catalogue answers 'what is this for', not just 'what does this expose'.

What developers build with this provider.

Microservices Decoupling

Decouple microservices through asynchronous event-driven communication reducing direct service dependencies.

Event Streaming Pipelines

Build scalable event streaming pipelines with durable delivery and replay capabilities.

Distributed Workflows

Orchestrate distributed business processes using event-driven saga and choreography patterns.

IoT Event Ingestion

Ingest and process high-volume IoT device events through standardized CloudEvents format.

Integrations 4

Pre-built integrations with other platforms tell you where this provider already fits in a stack.

Pre-built integrations with other platforms and tools.

Apache Kafka

Kafka connector for event streaming with durable storage and consumer groups.

Apache RocketMQ

RocketMQ connector for high-throughput message queueing and topic management.

Apache Pulsar

Pulsar connector for multi-tenant event streaming with geo-replication.

Kubernetes

Cloud-native deployment on Kubernetes with operator support for cluster management.

Resources

Every other property we hold for Apache EventMesh — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 1

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Company 1

The organization behind the API

← All providers · Data indexed from github.com/api-evangelist/apache-event-mesh · machine-readable index on apis.io