Subdomain API for Windsurf

app.subdomain/subdomains

Find known subdomains of a domain. Passive data; may include historic entries. List or count.

client:Windsurf transport:streamable-http tools:2

Install Subdomain API in Windsurf

~/.codeium/windsurf/mcp_config.json · windows: %USERPROFILE%\.codeium\windsurf\mcp_config.json

{
  "mcpServers": {
    "subdomains": {
      "serverUrl": "https://api.subdomain.app/mcp"
    }
  }
}

Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs