# FX reference rates (fx.agentexchange.work) > Daily reference exchange rates for 30 currencies from the European Central Bank (published every TARGET business day about 16:00 CET), rebased to any currency, with conversions and history. Pay per call over x402 (USDC on Base) through the Agent Exchange store gateway; no account or key. Free: https://fx.agentexchange.work/sample.json ## Paid routes (x402, USDC on Base, through the Agent Exchange store gateway; no account or key) - GET https://store.agentexchange.work/gw/fx/rates (0.002 USD per call): All ECB reference rates for the latest day, rebased to a base currency (EUR by default; any of the 30 currencies): {base, date, rates:{USD:..., JPY:...}}. Pay 0.002 USDC through https://store.agentexc - GET https://store.agentexchange.work/gw/fx/convert (0.002 USD per call): Convert an amount between two currencies at the latest ECB reference rate: {from, to, amount, rate, result, date}. Pay 0.002 USDC through https://store.agentexchange.work/gw/fx/convert?from=USD&to=CNY - GET https://store.agentexchange.work/gw/fx/history (0.002 USD per call): Daily ECB reference rate history for a pair over the last N business days (up to 365): {from, to, days, series:[{date, rate}]}. Pay 0.002 USDC through https://store.agentexchange.work/gw/fx/history?fr ## Free - https://fx.agentexchange.work/ - https://fx.agentexchange.work/sample.json - https://fx.agentexchange.work/.well-known/x402 - Catalogue of every route on the store: https://store.agentexchange.work/.well-known/x402 - MCP: https://store.agentexchange.work/mcp