Development — entry 005 of 100
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 site sits behind an edge WAF that returns 403 to generic bot traffic even though the API itself is reachable with a valid token.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSUnknownNot documented — test from the browser before relying on it.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score61
Authentication15/25API key required
Pricing17/20Freemium tier available
Docs0/20No docs or spec available
Formats9/15Single response format
Freshness20/20Verified within 6 months
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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.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.