Summary
GMO Pepabo's official bridge to their Muumuu Domain registrar. It exposes the full domain lifecycle: search availability and pricing, register domains through natural language, list your owned domains and contracts with renewal dates, and manage DNS records with create, update, and delete operations. First remote MCP server from a Japanese domain registrar, runs over streamable HTTP with OAuth 2.1 handled automatically by Claude and compatible clients. The server itself is free, you just pay standard Muumuu registration fees when buying domains. Reach for this if you're managing domains through Muumuu and want to handle registration and DNS work without leaving your AI assistant.
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Muumuu Domain MCP Server
日本語版 README はこちら / Japanese README
The official remote Model Context Protocol (MCP) server for Muumuu Domain — a domain registration service operated by GMO Pepabo, Inc.
Search and register domains, manage owned domains and contracts, and configure DNS records — all through natural language conversations with AI assistants.
First remote MCP server in the Japanese domain registrar industry.
Endpoint
https://mcp.muumuu-domain.com/mcp
Transport: Streamable HTTP. Authentication: OAuth 2.1 (handled automatically by supported clients).
Features
- Domain search & registration — check availability, view pricing, register domains
- Domain management — list and inspect owned domains
- DNS management — list, create, update, and delete DNS records
- Contract management — review contract list (renewal dates, auto-renewal status) and details
Pricing: MCP server access is free. Standard Muumuu Domain registration fees apply when purchasing domains.
Quick Start
Choose your client below.
Claude Code
claude mcp add --transport http muumuu https://mcp.muumuu-domain.com/mcp
Then run /mcp inside Claude Code and select Authenticate to complete the OAuth flow.
Claude Desktop / claude.ai
Settings → Connectors → Add custom connector → enter:
https://mcp.muumuu-domain.com/mcp
OAuth is handled automatically by Claude.
Cursor
Add to .cursor/mcp.json:
{
"mcpServers": {
"muumuu": {
"url": "https://mcp.muumuu-domain.com/mcp"
}
}
}
OpenAI Codex CLI
codex mcp add muumuu --url https://mcp.muumuu-domain.com/mcp
Gemini CLI
See the Gemini CLI MCP server documentation for adding remote MCP servers.
Local stdio bridge (advanced)
For clients that only support stdio transport, use mcp-remote:
{
"mcpServers": {
"muumuu": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://mcp.muumuu-domain.com/mcp"]
}
}
}
Introspection-only mode (registry tooling)
For MCP registries (e.g. Glama) that index the tool surface in a headless build environment where an interactive OAuth flow cannot complete, the CLI also supports a stdio-only introspection mode:
node bin/muumuu-mcp.js --introspect-only
In this mode the CLI serves the static tool manifest over stdio. It does not make any network calls, does not read the Authorization header, and tools/call always returns isError: true. Do not use this mode for real traffic.
Documentation
Requirements
- A Muumuu Domain account
- An MCP-compatible client (Claude Desktop, Claude Code, Cursor, OpenAI Codex CLI, Gemini CLI, etc.)
Support
- For service-related inquiries: Muumuu Domain Help Center
- For issues with this repository: please open a GitHub Issue
License
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →