The architecture catalog for distributed systems

Discover your domains, services, events, and schemas — with AI-powered discovery, interactive visualizations, and 15+ generators for Kafka, EventBridge, RabbitMQ, and more.

31,000+ catalogs created

Documentation | Live Demo | Discord

Get started in seconds

npx @eventcatalog/create-eventcatalog@latest my-catalog

That's it. Open http://localhost:3000 and start documenting your architecture.

Looking for a guided walkthrough? Check out the Getting Started guide.

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Core Features

Visualise your architecture

Interactive node graphs that map your entire system — services, events, commands, queries, domains, and how they connect.

AI-powered discovery

Ask questions about your architecture and business in natural language. The built-in AI chat and MCP server let you and your tools explore your catalog.

Schema explorer

Quickly find any schema across your catalog — OpenAPI, AsyncAPI, Protobuf, JSON Schema, Avro, and more. All in one searchable place.

Schema fields

Filter and find any property on any field across your entire catalog. See how fields are used across services and messages.

Bring your own docs

Attach architecture decision records, runbooks, and any custom documentation to your domains, services, and teams. Version them alongside your architecture.

Document business flows

Tell the end-to-end story of your business workflows. Reference the services and messages you already have to build a higher-level picture of how everything fits together.

And much more...

• Version your resources — Full semantic versioning for events, commands, services, and more
• 15+ generators — Auto-generate from AsyncAPI, OpenAPI, Kafka, Confluent, AWS EventBridge, and more
• Customizable — Themes, custom MDX components, and configurable layouts
• Enterprise ready — OAuth2, RBAC, schema governance, breaking change detection

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Demos

See EventCatalog powering real-world architectures:

E-Commerce	Finance	Healthcare
SaaS

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Packages

Package	Description
@eventcatalog/core	Main catalog application (Astro + React)
@eventcatalog/sdk	Node.js SDK for programmatic catalog management
@eventcatalog/create-eventcatalog	CLI scaffolding tool
@eventcatalog/visualiser	Standalone React visualiser component
@eventcatalog/dsl-playground	Browser-based DSL playground

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Documentation

Visit the official docs to learn more.

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Support

Need help? Join the EventCatalog Discord.

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Contributing

We welcome contributions! See the contributing guidelines to get started.

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Contributors ✨

Thanks goes to these wonderful people (emoji key):

David Boyne 💻 🖋 🎨 💡 🤔 📖	Benjamin Otto 💻 🤔 📖 🐛	Tiago Oliveira 📖 🐛	Jay McGuinness 📖	David Khourshid 📖	thim81 🤔 🐛 💻	Muthu 🐛
Dan Tavelli 📖	steppi91 📖	Donald Pipowitch 🐛 💻	Ken 📖	Rodolfo Toro 💻	Drew Marsh 💻	Dec Kolakowski 💻 📖
Yevhenii Dytyniuk 💻	lcsbltm 💻	Matt Martz 💻	Michel Grootjans 💻	Arturo Abruzzini 💻	Ad L'Ecluse 💻	Rafael Renan Pacheco 💻 📖
Luis Diego 💻	Daniel Ruf 📖	Fredrik Johansson 💻	Naresh Kumar Reddy Gaddam 💻	Andre Deutmeyer 💻	Pebbz 💻	Alexander Holbreich 📖
José Delgado 💻	jlee-spt 💻	Kim Rejström 💻	Christophe Gabard 💻	Carlo Bertini 💻	David Regla 💻	Marcio Vinicius 💻
Daniel Andres Castillo Ardila 💻	Baerten Dennis 💻	Ryan Cormack 💻	Nathan Birrell 💻	Jack Tomlinson 💻	Carlos Rodrigues 💻	omid eidivandi 💻
Simone Fumagalli 📖	d-o-h 💻	Cristian Pallarés 💻	Sebastian Rendon 💻	Craig Roberts 💻	Ivan Milosavljevic 📖	Martin Meredith 💻
Ruud Welling 💻	Kevin Pouget 💻	Vitalii Balash 💻	Arnaud Babilone 💻	Alexander Horner 💻	simonwfarrow 💻	Augusto Romero Arango 💻
cc-stjm 💻	Lucian Lature 🐛 💻	Vilas Chauvhan 💻	Eric Hoffman 🐛	wimhaesen-kine 💻	Ondrej Musil 🐛 🤔	Anatoly Bolshakov 💻
reisingerf 📖	Jonathan Barette 💻	mumundum 💻	Piotr Rybarczyk 🐛	ZakaryaCH 🐛	Jasper Boeijenga 💻	Tom Kirkpatrick 💻
Machul 🐛	ugostack 💻

This project follows the all-contributors specification. Contributions of any kind welcome!

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Website | Docs | Discord | Twitter

_{Made with ❤️ by the EventCatalog community}

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License

MIT.