Unstoppable Domains MCP Server

Search, register, and manage domain names through natural conversation with AI assistants.

The Unstoppable Domains MCP server lets you access the User API through natural conversation inside ChatGPT, Claude, Cline, or any MCP-compatible agent.

Endpoint: https://api.unstoppabledomains.com/mcp/v1

Quick Start

Claude Code

Terminal

claude mcp add --transport http unstoppable-domains https://api.unstoppabledomains.com/mcp/v1

Then run /mcp inside a session and follow the OAuth flow to authenticate.

To make it available across all projects:

Terminal

claude mcp add --transport http --scope user unstoppable-domains https://api.unstoppabledomains.com/mcp/v1

Claude Desktop (free plan)

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

config.json

{
  "mcpServers": {
    "unstoppable-domains": {
      "command": "npx",
      "args": ["mcp-remote", "https://api.unstoppabledomains.com/mcp/v1"]
    }
  }
}

Restart Claude Desktop and look for the hammer icon in the chat input.

Claude Desktop / Claude.ai (paid plans)

Open Settings → Connectors → Add custom connector
Paste: https://api.unstoppabledomains.com/mcp/v1
Click Add and authorize with your Unstoppable Domains account

ChatGPT

Open ChatGPT Connector Settings and enable Developer Mode (beta)
Create a new connector with URL: https://api.unstoppabledomains.com/mcp/v1
Authorize with your Unstoppable Domains account

Or use the pre-built Unstoppable Domains GPT (core features, no MCP config needed).

Cline / Cursor / other MCP clients

config.json

{
  "unstoppable-domains": {
    "type": "http",
    "url": "https://api.unstoppabledomains.com/mcp/v1/"
  }
}

What You Can Do

Ask your AI assistant things like:

"Is 'mycoolstartup.com' available? What about .ai and .io?"
"Register acme.com and set up Google Workspace DNS"
"List my domains expiring in the next 90 days"
"Create a marketplace listing for mydomain.com at $5,000"
"Show me all DNS records for example.com and add an MX record"
"Generate an AI landing page for parkeddomain.com"

Authentication

OAuth 2.0 (Recommended)

When prompted by your AI tool, sign in with your Unstoppable Domains account. OAuth grants only the scopes you approve and can be revoked anytime from Account Settings.

Scope	Access
`domains:search`	Search domains, check availability
`portfolio:read`	View your domains, DNS records, offers
`portfolio:write`	Manage DNS, create listings, send messages
`cart:read`	View cart and payment methods
`cart:write`	Add/remove cart items
`checkout`	Complete purchases

API Key (Advanced)

Generate a key at Account Settings → Advanced → MCP API Key. Keys use the ud_mcp_* format.

server.ts

export UD_MCP_API_KEY="ud_mcp_your_key_here"

Use as a Bearer token: Authorization: Bearer ud_mcp_your_key_here

Note: API keys grant full access to all tools. Use OAuth for scoped access.

Tools

60 tools across 16 categories. See tools.md for the full reference and tool-annotations.reference.json for the MCP ToolAnnotation reference.

Category	Tools
Domain Search	`ud_domains_search`, `ud_tld_list`, `ud_expireds_list`, `ud_knowledge_base_search`
Portfolio	`ud_portfolio_list`, `ud_domain_get`
ICANN Contacts	`ud_contacts_list`, `ud_contact_create`
Cart	`ud_cart_get`, `ud_cart_add_*` (5 types), `ud_cart_remove`
Payment & Checkout	`ud_cart_get_payment_methods`, `ud_cart_checkout`, `ud_cart_get_url`, `ud_cart_add_payment_method_url`
Marketplace Listings	`ud_listing_create/update/cancel`, `ud_offers_list`, `ud_offer_respond`
Conversations	`ud_leads_list/get`, `ud_lead_messages_list/send`
DNS Records	`ud_dns_records_list`, `ud_dns_record_add/update/remove`, `ud_dns_records_remove_all`
DNS Nameservers	`ud_dns_nameservers_list/set_custom/set_default`
DNS Hosting	`ud_dns_hosting_list/add/remove`
Domain Operations	`ud_domain_pending_operations`, `ud_domain_auto_renewal_update`
Domain Management	`ud_domain_tags_add/remove`, `ud_domain_flags_update`, `ud_domain_push`
Backorders	`ud_backorder_create/cancel`, `ud_backorders_list`
AI Landing Pages	`ud_domain_generate/status/download/upload/remove_lander`, `ud_ai_credits_get`, `ud_cart_add_ai_credits`
DNS Presets	`ud_presets_list/save/delete/apply`
Session Handoff	`ud_authenticated_url_get`

API Reference

Item	Value
Endpoint	`https://api.unstoppabledomains.com/mcp/v1/`
OpenAPI Spec	`https://api.unstoppabledomains.com/mcp/v1/openapi.json`
Transport	Streamable HTTP (MCP protocol)
Auth	`Authorization: Bearer <oauth_token_or_api_key>`
Docs	docs.unstoppabledomains.com/user-api

Privacy & Data Practices

Data collected: When you use this MCP server, requests are processed by Unstoppable Domains servers. This includes domain names you search, portfolio data you query, DNS records you read or modify, and any purchase or marketplace actions you initiate.

Data storage: Unstoppable Domains stores account data, domain registrations, DNS records, and transaction history as required to provide the service. Conversation content from your AI assistant is not stored by Unstoppable Domains — only the API requests your assistant generates are received.

Data sharing: Unstoppable Domains does not sell personal data. Registration data for ICANN TLDs (.com, .net, .org, etc.) is shared with the relevant registry per ICANN policy. Payment processing is handled by third-party processors under their own privacy policies.

Data retention: Account and domain data is retained for the duration of your account and as required by law. You may request deletion of your account data via support@unstoppabledomains.com.

Full privacy policy: unstoppabledomains.com/privacy-policy

Support

Documentation: docs.unstoppabledomains.com
Support: support.unstoppabledomains.com
Email: support@unstoppabledomains.com
Issues: github.com/unstoppabledomains/unstoppable-mcp-server/issues

Unstoppable Domains README