WHOIS, DNS, SSL, and domain availability lookups for AI assistants
Connect Runs on your machine
claude mcp add mcp-server -e WHOISJSON_API_KEY=<WHOISJSON_API_KEY> -- npx -y @whoisjson/[email protected]
{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@whoisjson/[email protected]"
],
"env": {
"WHOISJSON_API_KEY": "<WHOISJSON_API_KEY>"
}
}
}
}
{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@whoisjson/[email protected]"
],
"env": {
"WHOISJSON_API_KEY": "<WHOISJSON_API_KEY>"
}
}
}
}
{
"servers": {
"mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@whoisjson/[email protected]"
],
"env": {
"WHOISJSON_API_KEY": "<WHOISJSON_API_KEY>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
WHOISJSON_API_KEYRequired, secret | Your WhoisJSON API key from whoisjson.com/dashboard |
Details
| Package | @whoisjson/[email protected] (NPM, stdio) |
| First published | 9 Apr 2026 |
| Last updated | 9 Apr 2026 |
| Registry name | io.github.Whoisjson/mcp-server |
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