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1Lookup

Official registry Productivity

Verify phone numbers, emails and IPs, and check remaining plan credits.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http 1lookup 'https://app.1lookup.io/api/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "1lookup": {
            "type": "http",
            "url": "https://app.1lookup.io/api/mcp"
        }
    }
}

Frequently asked questions

What is 1Lookup?

Verify phone numbers, emails and IPs, and check remaining plan credits.

How do I install 1Lookup?

It runs as a remote server. In Claude Code: claude mcp add --transport http 1lookup 'https://app.1lookup.io/api/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does 1Lookup need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Who maintains 1Lookup?

It is published by io.1lookup. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.