MCP server
Shipping Rates & Postage Calculator
com.onlineshippingcalculator/shipping-rates
Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools
Live USPS, UPS & FedEx shipping rates plus USPS postage and stamp prices. Free, no API key.
Working at last checkVerified publisher: onlineshippingcalculator.comAbout 759 tokens per request once connected2 tools
https://onlineshippingcalculator.com/api/mcp
At a glance
- Type
- MCP server
- Publisher
- onlineshippingcalculator.com (verified by the MCP Registry)
- Status
- Working at last check
- Tools
- 2
- Token cost
- About 759 tokens per request
- Sets up in
- Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
- Last checked
- 26 Oct 2026, 08:29 UTC
Connect it to your agent
Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.
Claude Code
claude mcp add --transport http shipping-rates https://onlineshippingcalculator.com/api/mcp
Claude Desktop
Settings → Connectors → Add custom connector, and paste the URL.
Codex (config.toml)
[mcp_servers.shipping-rates] url = "https://onlineshippingcalculator.com/api/mcp"
Gemini CLI
{"mcpServers":{"shipping-rates":{"httpUrl":"https://onlineshippingcalculator.com/api/mcp"}}}
Cursor
{"mcpServers":{"shipping-rates":{"url":"https://onlineshippingcalculator.com/api/mcp"}}}
VS Code
{"servers":{"shipping-rates":{"type":"http","url":"https://onlineshippingcalculator.com/api/mcp"}}}
Antigravity
agy mcp add shipping-rates https://onlineshippingcalculator.com/api/mcp
ChatGPT
Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.
OpenAI API (Responses tools)
{"type":"mcp","server_label":"shipping-rates","server_url":"https://onlineshippingcalculator.com/api/mcp","require_approval":"always"}
Grok (xAI API tools)
{"type":"mcp","server_label":"shipping-rates","server_url":"https://onlineshippingcalculator.com/api/mcp"}
Tools
get_postage_price~204 tokens
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 with no waste. Prices are zone-independent (same anywhere in tget_shipping_rates~555 tokens
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 rates for postage purchased online through shipping software
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