Namecheap MCP

Check domain availability across 600+ TLDs on Namecheap without leaving Claude

Ask Claude to check domains conversationally and get instant results with purchase links.

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Installation

npx @birdmania1/namecheap-mcp

⚠️ IMPORTANT: After installing, you MUST configure your Namecheap API credentials (see Setup below). The MCP won't work without them.

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Setup (3 minutes)

Copy-paste these commands to Claude one at a time and follow the steps:

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Step 1: Get Your IP Address

Say to Claude:

Visit https://api.ipify.org and tell me my IP address

Claude will tell you your IP. Write it down - you'll need it in steps 2 and 3.

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Step 2: Enable Namecheap API

Do these steps manually in your browser:

1. Go to https://www.namecheap.com and log in
2. Click Profile (top right) → Tools → Namecheap API Access
3. Click "Enable API Access"
4. Under Whitelisted IPs, click "Add New" and paste your IP from Step 1
5. Copy your API key - you'll need it in Step 3

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Step 3: Configure Claude Code

Say to Claude:

Add the Namecheap MCP server to my Claude Code config with these credentials:
- API User: [your namecheap username]
- API Key: [the key you just copied]
- Username: [your namecheap username]
- Client IP: [the IP from step 1]

Use this exact MCP server config:

{
  "command": "npx",
  "args": ["-y", "@birdmania1/namecheap-mcp"],
  "env": {
    "NAMECHEAP_API_USER": "your_username",
    "NAMECHEAP_API_KEY": "your_api_key_here",
    "NAMECHEAP_USERNAME": "your_username",
    "NAMECHEAP_CLIENT_IP": "your.ip.address.here"
  }
}

Important:
1. Add it to the SAME config file where your other MCP servers are (check where perplexity/github/etc are configured)
2. Make sure "namecheap" only appears in ONE config file (not duplicated across ~/.claude.json, settings.json, or mcp.json)
3. If you get errors, check for duplicate entries and remove them

Important: Replace the placeholder values with your actual credentials before sending to Claude.

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Step 4: Restart Claude Code

Fully quit Claude Code (⌘+Q on Mac, Alt+F4 on Windows) and reopen it.

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Step 5: Test It

Say to Claude:

Check if example.com and startup.io are available

You should get instant results with prices and purchase links!

If it doesn't work, see Troubleshooting below.

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What You Can Do

Find startup names:

"I'm building a SaaS for restaurants. Help me find a domain."

Check specific domains:

"Check if myapp.com, myapp.io, and myapp.ai are available"

Find alternatives:

"example.com is taken. Find me similar domains."

Research TLDs:

"Check if any single-word domains are available in .ai"

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Features

• 600+ TLDs — .com, .io, .ai, .xyz, .tech, and more
• Batch checking — Check 100 domains at once
• Instant pricing — See costs upfront
• Purchase links — One-click to buy
• Secure — Direct API, no proxy server

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Troubleshooting

"Invalid request IP" error:

• Your IP changed. Update it in Namecheap's whitelist.
• Ask Claude "What's my IP?" to get your current IP.

"API access not enabled":

• Enable it in your Namecheap account settings.

Not showing up in Claude:

• Check for duplicate entries: "namecheap" should only appear in ONE config file
• Common locations: ~/.claude.json, ~/.claude/settings.json, ~/.claude/mcp.json
• Remove duplicates, keeping only the one in the file where your other MCPs live
• Restart Claude Code after editing (full quit and reopen)
• Verify JSON is valid (no trailing commas, proper nesting)

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License

MIT

Made by developers tired of tab-switching