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Check live USPS, UPS, and FedEx rates plus postage prices.
Copy the install command and let the AI configure it · recommended for beginners
Please install the "Shipping Rates & Postage Calculator" MCP server from askskill: Run: claude mcp add --transport http 'com-onlineshippingcalculator-shipping-rates' 'https://onlineshippingcalculator.com/api/mcp'
Compare live rates for the same package across USPS, UPS, and FedEx, and tell me the cheapest option.
A live price comparison across carriers and the cheapest recommendation.
I have a standard envelope and want to know the required USPS postage and the stamp price.
Required postage, stamp price, and whether it is sufficient to mail.
Estimate USPS, UPS, and FedEx shipping costs based on my package dimensions, weight, and destination.
Shipping estimates and a recommended carrier for ecommerce fulfillment.
Compare shipping rates, buy labels, validate addresses, and track packages.
Connect carriers to automate rates, labels, address checks, and tracking.
Access freight lookup and calculation tools for dangerous goods, customs, and loading.
Calculate laytime, demurrage, and despatch for chartering workflows with AI.
Compare shipping rates, buy labels, track, and cancel shipments across LATAM.
Auto-detect carriers and track shipment numbers across multiple delivery services.