Development — entry 005 of 98
API Grátis
API Grátis (branded APIBrasil) is a Brazilian API gateway aggregating over 100 utility endpoints — CEP and CNPJ lookups, WhatsApp messaging, CPF validation, and anti-fraud checks — behind a single token. A free entry tier is gated by an authentication token issued on signup, with paid plans listed from R$149/month unlocking higher volume and premium endpoints, and a lightweight MCP server exposes the same catalog to AI agents. The apigratis.com.br marketing site sits behind a Vercel bot-mitigation challenge, but that's cosmetic — the actual gateway.apibrasil.io endpoint answers directly with no such gate and sends a wide-open Access-Control-Allow-Origin: *.
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<a href="https://greatapis.com/api/api-gr-tis/"><img src="https://greatapis.com/badge/api-gr-tis.svg" alt="Scored 61 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.