The io.github.Eronmmer/bloomfilter MCP server provides a service that lets AI agents search, register, and configure domain names, and manage DNS records through the Bloomfilter domain registration and configuration API.
🛠️ Key Features
Searches domain names
Registers domains
Manages DNS records
Uses x402 for payments
Operates as an MCP server for Bloomfilter
“No login” mentioned in the readme excerpt
🚀 Use Cases
Enable an AI agent to autonomously search and register domains
Allow agent-driven configuration of DNS records via the Bloomfilter API
Provide payment via a wallet with USDC for x402-based operations
⚡ Developer Benefits
Integrates domain and DNS workflows into the Model Context Protocol
Connects agents to the Bloomfilter API for domain registration and configuration
Supports TypeScript (topic listed) for development alignment
⚠️ Limitations
Functionality described is limited to domain search/registration and DNS record management
Payment details are described only in terms of x402 and USDC; no additional authentication or login flow is specified
MCP server for Bloomfilter, search & register domain names and manage DNS records from AI agents.
Bloomfilter is a domain registration and configuration API that uses x402 for payments. Point your AI agent at the Bloomfilter API, give it a wallet with some USDC, and it can autonomously search, register, and configure domains.
No login, no credit card, no dashboard. Just HTTP requests and a crypto wallet.
This MCP server wraps the Bloomfilter API so that any MCP-compatible client (Claude Desktop, Cursor, Windsurf, custom agents, etc.) can use it as a tool provider.
Any MCP-compatible client that supports stdio servers will work.
Environment variables
Variable
Required
Default
Description
BLOOMFILTER_PRIVATE_KEY
For paid operations
-
EVM private key (hex). Used for x402 payments and wallet-based auth.
BLOOMFILTER_API_URL
No
https://api.bloomfilter.xyz
API base URL.
Without a private key, only search_domains and get_pricing work. Everything else requires a wallet.
Tools
The server exposes 10 tools:
Free (no wallet needed)
search_domains: Check if a domain is available and get pricing. Searches across multiple TLDs at once.
get_pricing: Get registration, renewal, and transfer pricing for one or all supported TLDs.
Authenticated (wallet required)
get_domain_info: Get details about a registered domain: status, expiry, nameservers, lock state.
register_domain: Register a new domain. Pays with USDC via x402 automatically. Handles async provisioning.
renew_domain: Extend a domain registration. Same x402 payment flow.
get_account: View wallet address, domain count, total spent.
DNS Management (wallet required, $0.10 USDC per mutation)
list_dns_records: List all DNS records for a domain.
add_dns_record: Add a DNS record (A, AAAA, CNAME, MX, TXT, NS, SRV, CAA, FORWARD).
update_dns_record: Update an existing DNS record by ID.
delete_dns_record: Delete a DNS record by ID.
How Payments Work
Bloomfilter uses the x402 protocol, an HTTP-native payment standard. When a tool triggers a paid API call, the server handles payment negotiation automatically:
The API responds with HTTP 402 and a payment requirement
The MCP server signs a USDC payment with your wallet
The API verifies the payment and completes the request
All payments are in USDC on Base (an Ethereum L2). You need USDC in the wallet corresponding to your private key.
Authentication
The server authenticates with the Bloomfilter API using SIWE (Sign-In With Ethereum). This happens automatically on the first authenticated tool call. No setup needed beyond providing your private key.