Shipping Rates & Postage Calculator

https://server.smithery.ai/onlineshippingcalculator/shipping-rates/mcp

● healthy

Live USPS, UPS & FedEx shipping rates plus USPS postage and stamp prices — for any US parcel or letter. Free, no API key, no signup. - **get_shipping_rates** — compare carrier rates between US ZIP codes (and international destinations) by weight and dimensions - **get_postage_price** — exact USPS postage and stamp combinations for letters, large envelopes, and postcards

Transport

streamable-http

Auth

smithery_api_key

Cost

—

How to connect

MCP endpoint (streamable-http)

https://server.smithery.ai/onlineshippingcalculator/shipping-rates/mcp

JSON-RPC initialize probe

curl -X POST https://server.smithery.ai/onlineshippingcalculator/shipping-rates/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Homepage

https://onlineshippingcalculator.com/mcp

Listed at (smithery)

https://onlineshippingcalculator.com/mcp