Bloomfilter
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Let AI agents search, register, and manage domains via API
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- Author
- bloomfilter-labs
- Categories
- Developer Tools, Search, Knowledge Base
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Setup
Install Bloomfilter in your MCP client (Claude Desktop, Cursor, Windsurf, and others).
Repository: https://github.com/bloomfilter-labs/mcp-server-bloomfilter
Follow the installation instructions in the repository README, then restart your MCP client.
MCP server forBloomfilter, search & register domain names and manage DNS records from AI agents.
Bloomfilter is a domain registration and configuration API that usesx402for 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.
BLOOMFILTER_PRIVATE_KEY=0x... npx @bloomfilter/mcp-server
The server communicates over stdio (JSON-RPC). It's meant to be launched by an MCP client, not run standalone.
Add this JSON to your MCP client's config file:
{ "mcpServers": { "bloomfilter": { "command": "npx", "args": ["-y", "@bloomfilter/mcp-server"], "env": { "BLOOMFILTER_PRIVATE_KEY": "0x..." } } } }
Any MCP-compatible client that supports stdio servers will work.
Without a private key, onlysearch_domainsandget_pricingwork. Everything else requires a wallet.
- 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.
- 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.
All payments are in USDC on Base (an Ethereum L2). You need USDC in the wallet corresponding to your private key.
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.
Full API reference and guides atdocs.bloomfilter.xyz.
git clone https://github.com/BloomFilter-Labs/mcp-server-bloomfilter.git cd mcp-server-bloomfilter npm install npm run build
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