ViaCep

viacep.com.br

Provides RESTful lookup of Brazilian postal codes (CEP), returning address information in JSON, JSONP, or XML, plus reverse address search.

The ViaCep API uses none authentication; has free pricing; offers a free tier (Free high-performance webservice, no key required); rate limits: No numeric limit documented; massive use for validating local databases may automatically block access indefinitely. Address search capped at 50 CEPs per result.. Verified 2026-07-12 with per-field source links.

Geo & Location Verified 2026-07-12 medium confidence

Base URL

https://viacep.com.br/ws/

viacep.com.br ↗

Auth

none

viacep.com.br ↗

Free tier

Free high-performance webservice, no key required

viacep.com.br ↗

Pricing model

free

viacep.com.br ↗

Pricing

Free ('Webservice gratuito'); databases are not sold or distributed

viacep.com.br ↗

Rate limits

No numeric limit documented; massive use for validating local databases may automatically block access indefinitely. Address search capped at 50 CEPs per result.

viacep.com.br ↗

OpenAPI spec

not documented null

no source

MCP server

not documented null

no source