{"ferramentas":[{"url":"https://api.brazilayer.com/v1/ferramentas/cnpj/{valor}","descricao":"Validate and normalize a Brazilian company tax ID (CNPJ): check digits, 14-digit form and punctuated form. Free, unlimited, no payment."},{"url":"https://api.brazilayer.com/v1/ferramentas/cpf/{valor}","descricao":"Validate a Brazilian personal tax ID (CPF) check digits. Pure arithmetic — nothing is stored or looked up; the response never echoes the full number. Free, unlimited."}],"gratuitas":true,"veja_tambem":[{"url":"https://api.brazilayer.com/v1/cnpj/situacao/{cnpj}","descricao":"Valid digits do not mean the company exists. Check the number against the official registry — does it exist and is it active ($0.001, the cheapest paid check in the catalog)."},{"url":"https://api.brazilayer.com/v1/cnpj/amostra","descricao":"You validated the number but know nothing about the company. This free sample shows every field the Receita Federal registry holds — no payment."},{"url":"https://api.brazilayer.com/v1/empresa/enriquecer/{cnpj}","descricao":"To decide whether to transact with this CNPJ: registration, partners, sanctions, central-bank status and government contracts in one call ($0.05, one round trip instead of five)."}]}