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EventCatalog MCP Server

EventCatalog MCP Server

Public
event-catalog/mcp-server

Access and query your event-driven architecture's domains, services, messages, and schemas directly from any Model Context Protocol (MCP) client to gain instant insights, manage OpenAPI and AsyncAPI specs, and streamline event documentation.

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May 30, 2025
Updated Jun 4, 2025

Supercharge Your AI with EventCatalog MCP Server

MCP Server

Unlock the full potential of EventCatalog MCP Server through LangDB's AI Gateway. Get enterprise-grade security, analytics, and seamless integration with zero configuration.

Unified API Access
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Free tier available • No credit card required

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📖 EventCatalog - MCP Server Save time and money by getting insights from your EventCatalog directly from your MCP Client (Claude, Cursor, Windsurf, etc)

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Features: Ask about domains, services and messages. Get answers in seconds. Request schemas, who owns what and much more.

Read the Docs | View Demo

Why EventCatalog MCP Server?

EventCatalog is an Open Source tool that helps you document your event-driven architecture. Using EventCatalog you can document your domains, services and messages, schemas and much more.

Using the EventCatalog MCP Server you can get more value from your EventCatalog by asking questions about your architecture in the tools you already use.

Example questions:

  • What events do we have in our architecture?
  • Tell me more about the {service} service.
  • I want to create a new feature that will send emails when a user signs up, what events do we have in our architecture that are related to user signups?
  • Get me the schema for the event UserCreated in EventCatalog.
  • Here is a new version of the UserCreated schema, what downstream consumers will be affected by this change?

Rather then digging through your architecture to find the answers you need, you can ask the MCP server directly from your MCP Client.


EventCatalog MCP Features

  • 🤖 Connect to any MCP Client (Claude, Cursor, Windsurf, etc)
  • 🤖 Run MCP server locally on your machine with one command
  • 🤖 Connect to your EventCatalog instances
  • 🤖 Ask questions about your architectures
  • 🤖 Ask questions about your OpenAPI and AsyncAPI specifications
  • 🤖 Ask about domains, services and messages, and much more
  • 🤖 Get the schemas for events, queries, commands and services (OpenAPI, AsyncAPI, JSON Schema)
  • 🤖 Ask questions about ubiquitous language for any domain and their entities

Getting Started

Installation

First, you need to enable the LLMS.txt feature in your EventCatalog instance.

  1. Enable the LLMS.txt feature in your EventCatalog instance, by configuring your eventcatalog.config.js file.
  2. Deploy your EventCatalog instance with the LLMS.txt feature enabled.

Next, you will need to get a EventCatalog Scale license key, you can get a 14 day trial license key from EventCatalog Cloud.

Installing via Smithery

To install EventCatalog for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @event-catalog/mcp-server --client claude

Setup MCP Clients

Each MCP client has a different way of adding the MCP server.

You can find some helpful links below to get started.

  • Claude Desktop
  • Cursor

Adding the MCP server to Claude Desktop

To use this with Claude Desktop, add the following to your claud_desktop_config.json file. The full path on MacOS: ~/Library/Application Support/Claude/claud_desktop_config.json, on Windows: %APPDATA%\Claude\claud_desktop_config.json

{ "mcpServers": { "eventcatalog": { "command": "npx", "args": [ "-y", "@eventcatalog/mcp-server", "https://demo.eventcatalog.dev", // Replace with your EventCatalog URL "ABCD-1234-5678-9012-3456-7890" // Replace with your EventCatalog Scale license key ] } } }

Adding the MCP server to Cursor

Go to Cursor Settings -> MCP Servers -> Add MCP Server.

  • Name: eventcatalog
  • Command: npx
  • Args: -y @eventcatalog/mcp-server {URL_TO_YOUR_EVENTCATALOG_INSTANCE}

Configuration for your project

You can also create .mcp.json files in your project to configure the MCP server for your project using Cursor.

{ "mcpServers": { "eventcatalog": { "command": "npx", "args": ["-y", "@eventcatalog/mcp-server", "https://demo.eventcatalog.dev", "ABCD-1234-5678-9012-3456-7890"] } } }

You can read more about configuration for your project in the Cursor documentation.

API

Here is a list of all the APIs that the MCP server supports.

Tools

  • find_resources
    • Find resources that are available in EventCatalog
  • find_resource
    • Get more information about a service, domain, event, command, query or flow in EventCatalog using its id and version
  • find_producers_and_consumers
    • Get the producers (sends) and consumers (receives) for a service in EventCatalog
  • get_schema
    • Returns the schema for a service, event, command or query in EventCatalog
  • review_schema_changes
    • Reviews schema changes for breaking changes and suggests fixes.
  • explain_ubiquitous_language_terms
    • Explain ubiquitous language terms for a given domain

Resources

  • eventcatalog://all
    • All messages, domains and services in EventCatalog
  • eventcatalog://events
    • All events in EventCatalog
  • eventcatalog://domains
    • All domains in EventCatalog
  • eventcatalog://services
    • All services in EventCatalog
  • eventcatalog://queries
    • All queries in EventCatalog
  • eventcatalog://commands
    • All commands in EventCatalog
  • eventcatalog://flows
    • All flows in EventCatalog
  • eventcatalog://teams
    • All teams in EventCatalog
  • eventcatalog://users
    • All users in EventCatalog

Missing an API?

We are working on adding more APIs to the MCP server. If you need something specific, please open an issue and we will add it to the server.

Contributing

  1. Clone the repository
  2. Run pnpm install to install the dependencies
  3. Run pnpm run build

To use the build as your MCP server you can point your MCP client to the dist folder.

Example for Cursor:

{ "mcpServers": { "eventcatalog": { "command": "npx", "args": ["-y", "tsx /PATH_TO_YOUR_REPO/src/index.ts", "https://demo.eventcatalog.dev", "ABCD-1234-5678-9012-3456-7890"] } } }

Sponsors

Thank you to our project sponsors.

Gold sponsors

Manage, secure, and govern every API in your organization Learn more

Delivering Apache Kafka professional services to your business

Learn more

Sponsors help make EventCatalog sustainable, want to help the project? Get in touch! Or visit our sponsor page.

Enterprise support

Interested in collaborating with us? Our offerings include dedicated support, priority assistance, feature development, custom integrations, and more.

Find more details on our services page.

License

Usage of this feature is part of the EventCatalog Pro Edition

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