{"name":"payload402","description":"Convert amounts between ISO 4217 currencies using ECB daily reference rates (Frankfurter). Use for invoices, travel budgets, expense reports, and shopping comparisons when you need a verifiable rate instead of LLM arithmetic. Not live tradable FX — rates follow ECB business-day publication.","tags":["finance","currency","fx","ecb","conversion","travel"],"price":"$0.001","network":"eip155:8453","when_to_use":"Invoices, travel or expense math, and any task needing ISO currency conversion with a cited ECB reference rate.","convert":"/convert?amount=10&from=USD&to=EUR","mcp":"/mcp","note":"ECB daily reference rates, not live tradable FX","openapi":"/openapi.json","llms":"/llms.txt","x402":"/.well-known/x402"}