SmitheryListed
Shipping Rates & Postage Calculator
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
First seen 2 Oct 2026. Evidence as of 5 Oct 2026.
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No changes since the first observation. The first snapshot is the baseline.
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Smithery | onlineshippingcalculator/shipping-rates | 2 Oct 2026 | 5 Oct 2026 | 1 |