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90
MCP live MCP 2025-06-18 streamable-http

Shipping Rates & Postage Calculator

com.onlineshippingcalculator/shipping-rates

Live USPS, UPS & FedEx shipping rates plus USPS postage and stamp prices. Free, no API key.

Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
476ms
last probe
Tools
2
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://onlineshippingcalculator.com/api/mcp
Score: 90/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
2 tools, 0 resources, 0 prompts returned.
partial 3 or more catalogue items 0/10
2 items in total; 3 or more earns these points.
How to earn +10 points
Expose at least three tools, resources or prompts
Split a catch-all tool into focused ones, or publish your docs and templates as resources and prompts.
Docs →
pass Describes itself 10/10
91 characters; more than 30 earns these points.

Tools · 2

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. Returns carrier, service, price in USD, and estimated transit days, sorted cheapest …

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 …

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://onlineshippingcalculator.com/api/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "shipping_rates_\u0026_postage_calculator": {
      "url": "https://onlineshippingcalculator.com/api/mcp",
      "transport": "streamable-http"
    }
  }
}