# Shipping Rates & Postage Calculator

> Use this tool when you need to calculate accurate shipping costs and postage rates from USPS, UPS, and FedEx. It solves problems related to estimating delivery expenses and comparing rates between carriers, providing live rates and prices without requiring an API key. Ideal for e-commerce businesses, online sellers, and individuals looking to save on shipping costs.

Canonical page: https://skillsregistry.net/skills/com-onlineshippingcalculator-shipping-rates  
JSON: https://api.skillsregistry.net/v1/skills/com-onlineshippingcalculator-shipping-rates

## Description

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

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** api-integration
- **Updated:** 2026-06-12

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/com.onlineshippingcalculator%2Fshipping-rates)

## Use it

MCP endpoint published by the skill: `https://onlineshippingcalculator.com/api/mcp`

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "com-onlineshippingcalculator-shipping-rates"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/com-onlineshippingcalculator-shipping-rates` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/com-onlineshippingcalculator-shipping-rates/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt