contix

Spain: IBAN validation with bank and BIC, EU VAT number check (VIES), Modelo 303 VAT sums

Official docs outline

Extra Credit builds an outline of contix's docs the first time your work uses it. Until then, start at the official documentation.

Brainy Prices UAE living costs: KHDA fees, DLD rents, fuel, utilities, telecom and relocation, with dated sources
BriefTape Real-time AI-summarized SEC filings, Fed, FDA and BLS data, ticker-tagged
CardBinCheck Card BIN/IIN lookup: network, issuer, country and card type for the first 6-8 digits
Citi All Citigroup account and statement data APIs
Clear Street Trade US stocks and options, with market data, fundamentals and account data
CongressInvests Real-time U.S. congressional stock trade disclosures from Senate EFD and House Clerk
Degenscan Intel Macro U.S. Treasury auctions, stablecoin supply, Brazil crypto-dollar premium vs BCB PTAX; free trial key
Dino.markets Matched Kalshi and Polymarket prediction-market data, cross-venue spreads
Drillr Fundamentals, filings, earnings, ownership and events for US, China and Japan equities
Econdb Global macroeconomic data
EconPulse Live economic data — CPI, PPI, energy, treasury rates, BTC premium
EOD Historical Data Real-time and historical stock market data with 150+ exchanges