postalref for Windsurf

com.postalref/postalref

USPS package barcodes, service type codes and mailing terms, each cited to its USPS source.

client:Windsurf transport:streamable-http tools:8

Install postalref in Windsurf

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

{
  "mcpServers": {
    "postalref": {
      "serverUrl": "https://postalref.com/mcp"
    }
  }
}

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