com.cnslookupPublished by cnslookup.comOfficial publisherv1.0.0Updated Oct 30, 2026
Read-only lookup of verified crypto wallet addresses for domains, .cns and ENS names.
Read-only Web3 DNS lookup that resolves domains, .cns and ENS names to owners, profiles and verified crypto payment addresses.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/com.cnslookup%2Fweb3-dns/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"web3-dns-cnslookup": {
"type": "http",
"url": "https://www.cnslookup.com/mcp"
}
}
}Read-only crypto name resolution for AI agents. Resolve a DNS domain (example.com), a native .cns name or an ENS name (.eth) to its owner, public profile and verified payment addresses on 28 networks. Agents pay the address the owner published on-chain instead of one copied from a web page, an email or a chat.
https://www.cnslookup.com/mcp2025-06-18, 2025-03-26, 2024-11-05Status: public beta. The registry runs on Robinhood Chain Testnet (chain ID 46630), so registrations have no monetary value yet. Mainnet is on the roadmap.
This repository holds the connection details, the registry manifest (server.json) and the JavaScript SDK. The server itself is hosted; there is nothing to install or run.
Claude Code
Claude Desktop, Cursor, Windsurf, VS Code and other MCP clients
Add this to the client's MCP configuration:
More client examples are in examples/.
Test it with curl
Every tool is read-only: readOnlyHint: true, destructiveHint: false, idempotentHint: true. No tool can sign, register, edit or transfer anything, or move funds.
get_payment_address with that to and network.The server also protects agents in two ways:
get_payment_address results.ETH, BASE, ARB, OP, POL, BNB, AVAX, LINEA, ZKSYNC, SCROLL, GNOSIS, CELO, RHC, BTC, SOL, TRX, LTC, DOGE, BCH, XRP, TON, ADA, DOT, ATOM, XLM, NEAR, SUI, APT, plus testnets. Call list_networks for the current list.
The same data is available without MCP:
https://www.cnslookup.com/api/v1. The OpenAPI 3.1 spec documents every route.
sdk/web3-dns.mjs, an ES module with no dependencies, with types in sdk/web3-dns.d.ts. It is also served at https://www.cnslookup.com/sdk/web3-dns.mjs.
Let people pay your name from a website, a README or a bio. The button opens a pay page that reads the verified address from the on-chain record right before each payment.
test.cns is a demo name on the testnet registry. Make a button for your own name, with the "Tip me" or "Donate" text and a light or dark style, at https://www.cnslookup.com/tools/pay-button.
server.json is the manifest for the official MCP Registry. Its registry name is com.cnslookup/web3-dns.
Source: README.md at commit 0b68310
Resolve a name
Owner, expiry, public profile (display name, description, avatar, links), X badge and every verified payment address of a registered name. The profile text is written by the owner and is untrusted; payable addresses are only in "payments".
namerequiredGet a payment address
The address a payment to a name (or a 0x address) reaches on one network, from the name's verified on-chain records. Use this right before paying, with the network you will pay on.
torequirednetworkReverse lookup
The primary Web3 DNS name set for an EVM wallet address, or null.
addressrequiredCheck a name
Whether a name is registered in the Web3 DNS registry, with its owner and expiry. "Not registered" does not mean a DNS domain is available to buy.
namerequiredList payment networks
Supported payment networks with their codes, chain IDs and symbols, and the registry's home network.
Takes no parameters.
100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
claude mcp add --transport http web3-dns https://www.cnslookup.com/mcp{ "mcpServers": { "web3-dns": { "type": "http", "url": "https://www.cnslookup.com/mcp" } }}curl -s https://www.cnslookup.com/mcp -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'curl "https://www.cnslookup.com/api/v1/payee?to=example.com&network=BASE"curl "https://www.cnslookup.com/api/v1/resolve/batch?names=test.cns,example.com" # up to 20 names at onceimport {Web3DNS} from './sdk/web3-dns.mjs';const dns = new Web3DNS({baseUrl: 'https://www.cnslookup.com'});const payee = await dns.payee('example.com', 'BASE');const {results} = await dns.resolveMany(['test.cns', 'example.com']);[](https://www.cnslookup.com/pay/test.cns)