Shipping Rates & Postage Calculator is a remote MCP server that gives an AI agent 2 tools, among them get_postage_price, get_shipping_rates. It answers at https://onlineshippingcalculator.com/api/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.
Live USPS, UPS & FedEx shipping rates plus USPS postage and stamp prices. Free, no API key.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
get_postage_price | Get the current USPS First-Class postage price for a letter, large envelope (flat), or postcard mailed within the US — including how many Forever stamps to put on it and an exact combination of stamp denominations that covers the postage wi Inputs: mail_class, ounces |
get_shipping_rates | Get live USPS, UPS, and FedEx shipping rates for a package from a US ZIP code to a US or international destination. Returns carrier, service, price in USD, and estimated transit days, sorted cheapest first. IMPORTANT: these are discounted r Inputs: from_zip, to_zip, to_country, weight, weight_unit, length_in |
Every block below points at https://onlineshippingcalculator.com/api/mcp. Pick your client and copy.
claude mcp add --transport http shipping-rates-postage-calculato https://onlineshippingcalculator.com/api/mcp
{
"mcpServers": {
"shipping-rates-postage-calculato": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://onlineshippingcalculator.com/api/mcp"]
}
}
}{
"mcpServers": {
"shipping-rates-postage-calculato": {
"url": "https://onlineshippingcalculator.com/api/mcp"
}
}
}{
"servers": {
"shipping-rates-postage-calculato": {
"type": "http",
"url": "https://onlineshippingcalculator.com/api/mcp"
}
}
}{
"context_servers": {
"shipping-rates-postage-calculato": {
"url": "https://onlineshippingcalculator.com/api/mcp"
}
}
}{
"mcpServers": {
"shipping-rates-postage-calculato": {
"serverUrl": "https://onlineshippingcalculator.com/api/mcp"
}
}
}{
"mcpServers": {
"shipping-rates-postage-calculato": {
"url": "https://onlineshippingcalculator.com/api/mcp"
}
}
}name: Shipping Rates & Postage Calculator
version: 0.0.1
schema: v1
mcpServers:
- name: Shipping Rates & Postage Calculator
type: streamable-http
url: https://onlineshippingcalculator.com/api/mcp{
"mcpServers": {
"shipping-rates-postage-calculato": {
"httpUrl": "https://onlineshippingcalculator.com/api/mcp"
}
}
}{
"mcpServers": {
"shipping-rates-postage-calculato": {
"type": "http",
"url": "https://onlineshippingcalculator.com/api/mcp"
}
}
}{
"mcpServers": {
"shipping-rates-postage-calculato": {
"url": "https://onlineshippingcalculator.com/api/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fonlineshippingcalculator.com%2Fapi%2Fmcp&type=streamable_http&id=shipping-rates-postage-calculato&name=Shipping%20Rates%20%26%20Postage%20Calculator
It answered our last check on 18 October 2026 in 253 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by onlineshippingcalculator.com and served from onlineshippingcalculator.com, the vendor's own domain: https://onlineshippingcalculator.com/api/mcp.
2, as returned by the server's own tools/list on 31 August 2026: get_postage_price, get_shipping_rates.
It answered our last check on 18 October 2026 in 253 ms. Over 10 checks since 5 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://onlineshippingcalculator.com/api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: com.onlineshippingcalculator. Endpoint host: onlineshippingcalculator.com. ARD identifier: urn:air:com.onlineshippingcalculator:mcp:shipping-rates.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.