Shipping Rates & Postage Calculator
Live USPS, UPS & FedEx shipping rates plus USPS postage and stamp prices. Free, no API key.
Ready: ReadySecurity: SecureAuth: No authSetup: Openmcp_servermcp
Use it
- Endpoints
- https://onlineshippingcalculator.com/api/mcp streamable-http
- Instructions
- Use the MCP protocol over streamable-http.
- No authentication metadata was declared; the endpoint may still require credentials.
Version history
VersionStatusPublished
1.0.0LatestactiveJun 12, 2026