Brian Kratko

Kratko Fintech Tools Building a professional-grade library of financial infrastructure APIs for developers, fintechs, and payment engineers. Tool categories:

Card intelligence — BIN lookup, fraud scoring Payment operations — MCC, decline codes, ISO 8583 parsing International payments — IBAN, SWIFT/BIC, currency conversion Compliance & screening — Sanctions, PEP, routing number validation Crypto — Wallet validation (20+ chains), token price feed

13 tools live across RapidAPI and Apify. More shipping weekly. Built by a payments infrastructure veteran with 23 years across JP Morgan Chase, First Data, and KeyBank — managing $4B+ in transaction volume across 2,200+ retail locations.