This ENS MCP Server enables interaction with the Ethereum Name Service (ENS) to query, resolve, and manage blockchain domain names:
Resolve ENS names - Convert human-readable names (like 'vitalik.eth') to Ethereum addresses
Reverse lookup addresses - Find the ENS name associated with a given Ethereum address
Retrieve text records - Access metadata including email, URL, avatar, description, and social media handles
Check name availability - Determine if an ENS name is available for registration and get owner information if already registered
Get comprehensive name information - Fetch all available data including resolver address, text records, linked addresses, content hash, ownership, and expiration details
List subdomains - Discover all subdomains associated with an ENS name along with their owner information
View name history - Access historical events such as transfers, resolver changes, and registration events
Calculate registration costs - Get price breakdowns for registering ENS names with customizable duration, including base price, premium, and total
Enables Claude to interact with the Ethereum Name Service (ENS) system to resolve ENS names to Ethereum addresses, perform reverse lookups, retrieve records, check name availability, and access other ENS-related information
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@ENS MCP Serverresolve vitalik.eth to get his Ethereum address"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
ENS MCP Server
MCP Server for Ethereum Name Service (ENS), enabling Claude to interact with the ENS system to resolve names, check availability, retrieve records, and more.
npm package: https://www.npmjs.com/package/mcp-server-ens
Tools
resolve-name
Resolve an ENS name to an Ethereum address
Required inputs:
name(string): The ENS name to resolve (e.g., 'vitalik.eth')
Returns: The corresponding Ethereum address or an error message
reverse-lookup
Get the ENS name for an Ethereum address
Required inputs:
address(string): The Ethereum address to look up
Returns: The corresponding ENS name or an indication that no name was found
get-text-record
Get a text record for an ENS name
Required inputs:
name(string): The ENS name to querykey(string): The record key to look up (e.g., 'email', 'url', 'avatar', 'description', 'twitter', etc.)
Returns: The value of the specified text record or indication that no record was found
check-availability
Check if an ENS name is available for registration
Required inputs:
name(string): The ENS name to check
Returns: Availability status and owner information if registered
get-all-records
Get all available information for an ENS name
Required inputs:
name(string): The ENS name to query
Returns: Comprehensive information including resolver address, text records, addresses, content hash, ownership, and expiration details
get-subdomains
Get subdomains for an ENS name
Required inputs:
name(string): The ENS name to query for subdomains
Returns: List of subdomains with their owner information
get-name-history
Get the history of an ENS name
Required inputs:
name(string): The ENS name to check history for
Returns: Historical events related to the name, including transfers, resolver changes, and registration events
get-registration-price
Get the price to register an ENS name
Required inputs:
name(string): The ENS name to check price for
Optional inputs:
duration(number, default: 1): Registration duration in years
Returns: Registration price breakdown including base price, premium, and total
Related MCP server: ethereum-tools
Setup
Prerequisites
Node.js (v16 or higher)
npm or yarn
Access to Ethereum RPC providers (public or private)
Installation
Clone the repository or create a new project:
Install dependencies:
Configure Ethereum providers: Create a
.envfile in the project root with the following (optional):
If no providers are specified, the server will use these defaults:
https://eth.drpc.org
https://eth.llamarpc.com
https://ethereum.publicnode.com
https://rpc.ankr.com/eth
Usage with Claude Desktop
Add the following to your claude_desktop_config.json:
Using npx
Using local script
Usage with Claude Code
With custom providers:
Verify it's connected:
Error Handling
The server implements robust error handling for various scenarios:
Network errors connecting to Ethereum providers
Invalid ENS names or Ethereum addresses
ENS-specific errors
General operational errors
All errors are normalized into user-friendly messages while preserving technical details for debugging.
Publishing
To publish as an npm package:
Troubleshooting
If you encounter errors:
Verify your Ethereum providers are working and accessible
Check that the ENS names you're querying are formatted correctly
Ensure you have the latest version of the ENS libraries
Try using multiple providers by comma-separating them in the PROVIDER_URL environment variable
License
This MCP server is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.