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Architecture catalog for modern teams

Know what exists.
Know who owns it.
Know how it connects.

EventCatalog is the architecture catalog your team actually wants to use. Automatically discover, document, and keep your domains, services, events, and schemas up to date.

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EventCatalog — connect AsyncAPI, OpenAPI, schema registries, architecture diagrams, event streams, and source code into one catalog

Trusted by engineering teams at

These problems slow every team down.

You don't know what services connect

Nobody knows where to look, or which view reflects reality.

You can't find service ownership

It takes longer than it should to find the right person.

Schemas drift and break

Changes upstream without warning. Dashboards break. Models drift.

Diagrams go stale

Your architecture changes weekly. Diagrams rarely keep up.

Knowledge lives in people's heads

When that happens, context disappears.

A single source of truth for your architecture.

EventCatalog pulls in data from across your stack and turns it into clear, accurate, and always up-to-date documentation.

  • Automatically discover
    Pull from AsyncAPI, OpenAPI, schemas, diagrams, code, and more.
  • Document what matters
    Events, services, domains, flows, schemas, owners, and everything between.
  • Keep it up to date
    CI/CD and real-time updates mean your catalog is always current.
  • Make it usable
    Great docs people enjoy using. For humans and AI agents.
EventCatalog
  • Overview
  • Events
  • Services
  • Schemas
  • Consumers
  • Producers
  • Flows
  • Domains
  • Teams
  • Activity
  • Settings
OrderPlacedEventActive
Overview
Schema
Consumers3
Producers2
Flows2
Activity
Event details
DescriptionPublished when an order is placed.
OwnerCheckout Team
DomainOrders
Retention7 days
Tagsbusiness-criticalpiiorders
Last updated2 hours ago
Activity (30d)
Total events
12.4M↑ 12.3%
Consumers
3↑ 12.3%
Producers
12.3%↑ 2.3%
Dropped
3
Data quality
98.7%
Lineage
Web Checkout Service
Order Service
OrderPlaced Event
Inventory Service
Shipping Service
+4 more

Connect with the tools you already use.

AsyncAPIAsyncAPI
OpenAPIOpenAPI
ConfluentConfluent
KafkaKafka
AWSAWS
AzureAzure
+ More

Context your team —
and your AI — can trust.

Give your team (and AI agents) the structured context they need to build, debug, and ship with confidence.

  • Ask questions in plain English
  • Get accurate answers from your architecture
  • Bring your own models or use MCP
  • Export context in .txt, JSON, or Markdown
EventCatalog MCP
» What owns the OrderPlaced event?
The OrderPlaced event is owned by the Checkout Team.
  • • Domain: Orders
  • • Producers: Order Service
  • • Consumers: Inventory Service, Shipping Service
  • • Schema version: 1
  • • Retention: 7 days
Export context
As Markdown
As JSON
As .txt

Fits your workflow.
Updates on every push.

Trigger catalog builds from any CI/CD pipeline. Your docs stay in sync with your code.

Push to repo
main
CI pipeline runs
Build & test
Catalog updated
47 resources updated
Docs live
Always up to date

Bring clarity to your
architecture today.

Join engineering teams who build and ship with confidence.

Get started for free →See a demo