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CNPJ Validator Pro

7.2
fintech profitable added: Monday July 2026 15:39

A high-performance API for validating Brazilian CNPJ numbers, delivering results with sub-10ms latency as described in the article. It leverages a highly optimized database and caching mechanisms to handle a large volume of requests with minimal overhead.

120h
mvp estimate
7.2
viability grade
3
views

technology stack

Java PostgreSQL Difficult

inspired by

Serving Brazil's 68 million CNPJs with ~10ms latency