CNPJ → CNAE + regime tributário (Simples / MEI) — tax-registry enrichment for Brazilian bookkeeping agents, ranked
Tax-registry enrichment for Brazilian bookkeeping agents — given a list of CNPJs (e.g., prestador CNPJs from NFS-e invoices), get back CNAE primary + secondary, regime tributário (Simples Nacional + MEI flags), razão social, situação cadastral, full address, and QSA. Top pick: auxiliar-cnpj-fetch — call directly with no install, no token, just curl POST to https://api.auxiliar.ai/api/invoke/fetch_cnpj. Multi-provider cascade (BrasilAPI → CNPJ.ws) for resilience; same gateway available as an MCP tool when your host speaks MCP.