Currency Converter — Fiat & Crypto Cross-Rates
MCP ServerFreeCurrency conversion API for AI agents. Convert between fiat currencies (ECB rates) and crypto (CoinGecko rates). Instant cross-rate lookup for USD, EUR, GBP, JPY, BTC, ETH, and 100+ currencies. Tools: finance_convert_currency. Use this for price normalization, international pricing, or cross-curre
Capabilities5 decomposed
fiat-to-fiat currency conversion
Medium confidenceThis capability allows for real-time conversion between various fiat currencies using European Central Bank (ECB) rates. It leverages a lightweight API that fetches the latest exchange rates and performs calculations on-the-fly, ensuring users receive accurate and up-to-date conversion results. The implementation is designed to minimize latency by caching frequently requested rates, which enhances performance for high-frequency requests.
Utilizes ECB rates directly for accurate fiat conversions, minimizing reliance on third-party services.
More reliable than other APIs that aggregate rates from multiple sources, which can introduce discrepancies.
fiat-to-crypto currency conversion
Medium confidenceThis capability enables conversion between fiat currencies and cryptocurrencies using real-time rates sourced from CoinGecko. The API integrates with CoinGecko's data feed to provide accurate cross-rates, allowing users to seamlessly convert between currencies like USD and BTC. This functionality is crucial for applications that need to handle both fiat and crypto transactions without requiring multiple APIs.
Directly integrates CoinGecko's real-time data for accurate crypto conversions without additional setup.
Offers lower transaction costs compared to other crypto conversion APIs that charge higher fees.
instant cross-rate lookup
Medium confidenceThis capability provides instantaneous cross-rate lookups for over 100 currencies, allowing users to quickly obtain conversion rates without delay. The system is designed to handle multiple requests simultaneously, utilizing asynchronous processing to ensure that users receive results promptly. This is particularly beneficial for applications that require rapid currency calculations in real-time environments.
Optimized for high concurrency, allowing multiple cross-rate queries to be processed in parallel without significant delay.
Faster than traditional APIs that process requests sequentially, ensuring quicker access to data.
timestamped conversion results
Medium confidenceThis capability returns conversion results along with a timestamp indicating when the rates were fetched. This feature is crucial for applications that require historical context for currency conversions, allowing users to track fluctuations over time. The implementation ensures that each response is accompanied by accurate metadata, enhancing the reliability of the data provided.
Incorporates a timestamp in every response, providing essential context for financial transactions.
More informative than APIs that only return conversion values without accompanying metadata.
micropayment transaction support
Medium confidenceThis capability allows users to make micropayment transactions for currency conversion at a cost of $0.001 per call. The system is designed to handle small transactions efficiently, ensuring that users can access currency conversion services without incurring high costs. This is particularly useful for applications that require frequent conversions without the burden of high fees.
Designed specifically for micropayments, allowing for low-cost access to currency conversion without high overhead.
More affordable than traditional currency conversion APIs that charge flat fees regardless of usage.
Capabilities are decomposed by AI analysis. Each maps to specific user intents and improves with match feedback.
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Best For
- ✓developers building financial applications requiring real-time currency data
- ✓developers creating applications that bridge fiat and cryptocurrency markets
- ✓financial analysts needing rapid access to currency data
- ✓developers building financial applications that require historical data tracking
- ✓startups and developers looking to implement low-cost currency conversion features
Known Limitations
- ⚠Dependent on ECB rates, which may not reflect market conditions in real-time
- ⚠Limited to supported fiat currencies
- ⚠Conversion rates may lag slightly behind market fluctuations
- ⚠Limited to supported cryptocurrencies
- ⚠High load may affect response times during peak usage
- ⚠Limited to the currencies supported by the API
Requirements
Input / Output
UnfragileRank
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Repository Details
About
Currency conversion API for AI agents. Convert between fiat currencies (ECB rates) and crypto (CoinGecko rates). Instant cross-rate lookup for USD, EUR, GBP, JPY, BTC, ETH, and 100+ currencies. Tools: finance_convert_currency. Use this for price normalization, international pricing, or cross-currency calculations. Supports both fiat-to-fiat and fiat-to-crypto conversions. Returns: {result, rate, from, to, timestamp}. No API key required — x402 micropayment $0.001/call on Base L2.
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