How much is a stamp: USPS Forever stamp, postcard, international and letter postage by weight.
Connect Remote server
claude mcp add --transport http postage-stamp-price-mcp https://postage-stamp-price-mcp.lipmichal.workers.dev/mcp
{
"mcpServers": {
"postage-stamp-price-mcp": {
"url": "https://postage-stamp-price-mcp.lipmichal.workers.dev/mcp"
}
}
}
{
"servers": {
"postage-stamp-price-mcp": {
"type": "http",
"url": "https://postage-stamp-price-mcp.lipmichal.workers.dev/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://postage-stamp-price-mcp.lipmichal.workers.dev/mcp
Tools 3 found in our last check
get_stamp_priceThe current USPS Forever stamp price (First-Class Mail 1 oz stamped letter), the 2, 3 and 3.5 oz prices, metered letter prices, postcard, 1 oz large envelope, the nonmachinable surcharge and the 1 oz international letter (Global Forever) price, read at call time from USPS Notice…
calculate_letter_postageRetail postage for one letter, postcard or large envelope (flat) by weight, to the US, Canada, Mexico or any other country, with the nonmachinable surcharge for square or rigid cards, the total for a quantity, and the number of Forever stamps per piece. Letters up to 3.5 oz, US…
get_flat_rate_pricesCurrent USPS retail prices for Priority Mail Flat Rate envelopes and Small, Medium, Large and APO/FPO/DPO Flat Rate Boxes, and Priority Mail Express Flat Rate envelopes, from Notice 123.
Details
| Endpoint | https://postage-stamp-price-mcp.lipmichal.workers.dev/mcp (Streamable HTTP) |
| First published | 5 Nov 2026 |
| Last updated | 5 Nov 2026 |
| Registry name | io.github.theluckystrike/postage-stamp-price-mcp |
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