Paybook is a Mexican fintech company operating through its flagship product Syncfy, an open finance platform that provides financial data aggregation and API infrastructure across Latin America. Founded in 2011 and headquartered in Mexico City with operations in Miguel Hidalgo, the company enables developers, financial institutions, and businesses to integrate financial data from multiple sources through a single API connection. Syncfy connects to over 125 banking institutions, digital wallets, tax authorities, utility providers, cryptocurrency exchanges, and blockchains across 15 countries in Latin America and internationally. The platform processes data from more than 200,000 logins daily and handles millions of electronic invoices per month. Paybook offers three core product lines: Syncfy Connect for financial data aggregation from banks and credit cards, Syncfy Fiscal for tax data integration with authorities like Mexico's SAT including electronic invoice retrieval and stamping services, and Syncfy Finances for personal financial management. The company also developed Glass, a transparency tool for nonprofits to publish financial data and accept donations in fiat and cryptocurrency. In December 2022, Syncfy raised a landmark $10 million seed round led by Point72 Ventures, the largest seed investment in Latin America's open finance sector at the time. Major clients include BBVA, Intuit, and Mexican unicorn Clara. The platform serves diverse use cases including personal financial management, credit underwriting, accounting integrations, and automated bank reconciliation. Paybook holds ISO 27001 certification for information security and has secured patents for its transaction management technology. The company is expanding payment initiation services and continues to strengthen Mexico's open finance ecosystem through partnerships with banks and regulators.