MCP Server

Shipping Rates & Postage Calculator MCP Server

com.onlineshippingcalculator/shipping-rates

What is the Shipping Rates & Postage Calculator MCP server?

Live USPS, UPS & FedEx shipping rates plus USPS postage and stamp prices. Free, no API key.

Copy-paste configuration for popular MCP clients.

transport: http

Config generated by PluginBench — verify against the source before use.

~/.cursor/mcp.json

{
  "mcpServers": {
    "shipping-rates": {
      "url": "https://onlineshippingcalculator.com/api/mcp"
    }
  }
}

Active

Find, inspect and install reviewed reusable AI-agent capabilities from superskill.sh.

TypeScript

Read and write typed fictional worlds (22 linked element types) via the OnlyWorlds open standard.

Capture a Nevada auto insurance intent once; one verified seller answers for USD 1. No repeat ask.

Active

Check x402 endpoints before spending: free readiness and policy checks, paid trust evidence.

Python

Give your agents your team's real data — read the shared graph, propose actions your team approves.

Active

Log, evaluate, and ground AI decisions against authority context. Returns PASS, WARN, or BLOCK.

MIT