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Namecheap API — domains, DNS, contacts, registrar lock, SSL listing, and pricing.
About
Namecheap API — domains, DNS, contacts, registrar lock, SSL listing, and pricing.
Security Report
A well-designed Namecheap API MCP server with strong security practices. Credentials are properly managed via environment variables only, the API client avoids logging sensitive data, and the tool set is intentionally scoped to safe read/configuration operations (no financial transactions). Minor code quality improvements around error handling and input validation are recommended, but no critical vulnerabilities exist. Supply chain analysis found 8 known vulnerabilities in dependencies (1 critical, 4 high severity). Package verification found 1 issue.
6 files analyzed · 14 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: NAMECHEAP_API_USER
Environment variable: NAMECHEAP_API_KEY
Environment variable: NAMECHEAP_CLIENT_IP
Environment variable: NAMECHEAP_USERNAME
Environment variable: NAMECHEAP_ENVIRONMENT
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-lanternrow-namecheap-api-mcp": {
"env": {
"NAMECHEAP_API_KEY": "your-namecheap-api-key-here",
"NAMECHEAP_API_USER": "your-namecheap-api-user-here",
"NAMECHEAP_USERNAME": "your-namecheap-username-here",
"NAMECHEAP_CLIENT_IP": "your-namecheap-client-ip-here",
"NAMECHEAP_ENVIRONMENT": "your-namecheap-environment-here"
},
"args": [
"-y",
"namecheap-api-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
namecheap-api-mcp
MCP server for the Namecheap API — manage domains, DNS, contacts, registrar locks, and view SSL certificates and pricing, straight from your AI assistant.
Built for Claude Code and any MCP-compatible AI tool.
Part of The SEO Engine toolkit by Rex Jones — AI-powered SEO and social media tooling for agencies and businesses.
Safety model
This server ships read + safe-write tools only. It can read your account and change DNS / nameserver / forwarding / lock configuration (all reversible), but it deliberately excludes anything that spends money or is irreversible: no domain registration, renewal, reactivation, transfers, SSL purchase/activation, add-funds, or account/address mutation. You can fork and add those if you need them.
Quick start
1. Enable Namecheap API access
- Go to Profile → Tools → Namecheap API Access and toggle it ON. (Production access requires account eligibility: 20+ domains, OR a $50+ balance, OR $50+ lifetime spend.)
- Copy your API key.
- Whitelist the public IPv4 of the machine that will run this server (the API rejects any non-whitelisted IP with error
1011150).
2. Configure your MCP client
{
"mcpServers": {
"namecheap": {
"command": "npx",
"args": ["-y", "namecheap-api-mcp"],
"env": {
"NAMECHEAP_API_USER": "your_username",
"NAMECHEAP_API_KEY": "your_api_key",
"NAMECHEAP_CLIENT_IP": "your.whitelisted.ip.v4"
}
}
}
}
Option: clone and build
git clone https://github.com/lanternrow/namecheap-api-mcp.git
cd namecheap-api-mcp
npm install
npm run build
Then point your client at node /path/to/namecheap-api-mcp/dist/index.js. For local credentials you can keep a gitignored .env (copy .env.example) and launch with Node's native flag: node --env-file=.env dist/index.js.
Environment variables
| Variable | Required | Description |
|---|---|---|
NAMECHEAP_API_USER | Yes | Your Namecheap account username (API user). |
NAMECHEAP_API_KEY | Yes | API key from Profile → Tools → API Access. Secret. |
NAMECHEAP_CLIENT_IP | Yes | The whitelisted public IPv4 of this machine. |
NAMECHEAP_USERNAME | No | Defaults to NAMECHEAP_API_USER; differs only for reseller sub-users. |
NAMECHEAP_ENVIRONMENT | No | production (default) or sandbox. |
Tools
Read
| Tool | Description |
|---|---|
check_connection | Verify credentials + IP whitelist; returns the account balance summary. |
list_domains | List domains with expiry, lock, auto-renew, and WhoisGuard status (paged/searchable). |
get_domain_info | Detailed info for one domain. |
check_domains | Check availability + premium pricing (up to 50 at once). |
get_domain_contacts | Registrant / Tech / Admin / AuxBilling contacts. |
get_registrar_lock | Registrar lock status. |
get_dns_hosts | All DNS host records for a domain. |
get_nameservers | Nameservers and whether Namecheap DNS is in use. |
get_email_forwarding | Email forwarding rules. |
get_pricing | Namecheap pricing for a product type (cache the results). |
list_ssl_certificates | SSL certificates with type, host, status, expiry. |
Safe writes (configuration only — no charges)
| Tool | Description |
|---|---|
set_dns_hosts | Replace all host records (destructive: omitted records are deleted — send the full set). |
set_default_dns | Switch a domain to Namecheap's default nameservers. |
set_custom_nameservers | Point a domain at custom nameservers. |
set_email_forwarding | Set email forwarding rules. |
set_registrar_lock | Lock / unlock a domain at the registrar. |
Notes & gotchas
set_dns_hostsis destructive by API design. Namecheap'ssetHostsdeletes every record not included in the call. Always read current records first (get_dns_hosts), merge your change, then send the complete set.- Errors return HTTP 200. The Namecheap API signals failure in the XML body (
Status="ERROR"), not the HTTP status. This server parses that and throws a real error with the Namecheap error number + message. - IPv4 only for the whitelisted client IP.
Security
- Credentials are read from environment variables only — never hard-coded, logged, or written to disk by this server.
- The API key travels in the query string (Namecheap's design); this server never logs the request URL or key, and error messages surface only the Namecheap error number and text.
License
MIT © Rex Jones
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