postalref for VS Code

com.postalref/postalref

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

client:VS Code transport:streamable-http tools:8

Install postalref in VS Code

.vscode/mcp.json

{
  "servers": {
    "postalref": {
      "type": "http",
      "url": "https://postalref.com/mcp"
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs