INDIVIDUAL MCP TOOL

get_postage_price

Get the current USPS First-Class postage price for a letter, large envelope (flat), or postcard mailed within the US — including how many Forever stamps to put on it and an exact combination of stamp denominations that covers the postage with no waste.

onlineshippingcalculator.comnone authenticationAvailability not checked

Input schema

{}

Risk classification

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

Parent endpoint

onlineshippingcalculator.com

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.shipping-rates-calculator]
url = "https://onlineshippingcalculator.com/api/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "shipping-rates-calculator": {
      "type": "http",
      "url": "https://onlineshippingcalculator.com/api/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: shipping-rates-calculator
Remote MCP URL: https://onlineshippingcalculator.com/api/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "shipping-rates-calculator": {
      "url": "https://onlineshippingcalculator.com/api/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "shipping-rates-calculator": {
      "type": "http",
      "url": "https://onlineshippingcalculator.com/api/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "shipping-rates-calculator",
  "transport": "streamable-http",
  "url": "https://onlineshippingcalculator.com/api/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

get_shipping_rates — Get live USPS, UPS, and FedEx shipping rates for a package from a US ZIP code to a US or international destination.