Exchange Rate Tool

Convert currencies and view exchange rates using free API from exchangerate-api.com. No API key required.

When to Use

• Convert between any currencies
• Check current exchange rates
• View rate tables for multiple currencies
• Calculate cross-currency conversions

Quick Start

Convert Currency

python3 scripts/exchange-rate.py convert 100 USD CNY
# Output: $100.0000 = ¥692.0000

View Exchange Rates

python3 scripts/exchange-rate.py rate USD
# Shows rates for major currencies against USD

List Supported Currencies

python3 scripts/exchange-rate.py list

Commands

convert <amount> <from> <to>

Convert an amount from one currency to another.

Examples:

# USD to CNY
python3 scripts/exchange-rate.py convert 100 USD CNY

# EUR to USD
python3 scripts/exchange-rate.py convert 50 EUR USD

# JPY to CNY
python3 scripts/exchange-rate.py convert 10000 JPY CNY

rate <base_currency>

View exchange rates for major currencies against a base currency.

Examples:

# Rates against USD (default)
python3 scripts/exchange-rate.py rate USD

# Rates against CNY
python3 scripts/exchange-rate.py rate CNY

# Rates against EUR
python3 scripts/exchange-rate.py rate EUR

list

List all supported currency codes (150+ currencies).

python3 scripts/exchange-rate.py list

Common Currency Codes

Notes

• Rates are updated daily (typically around 00:00 UTC)
• API is free and requires no authentication
• Results include the date of the rate data
• Supports 150+ world currencies

Data Source

This skill uses the free tier of exchangerate-api.com, which provides:

• Daily updated rates
• 150+ supported currencies
• No API key required
• Rate limits apply (be reasonable with usage)

Example Output

💱 汇率转换
$100.0000 = ¥692.0000
汇率: 1 USD = 6.920000 CNY
日期: 2026-02-24