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title: "Brazil dados.gov.br now requires an Authorization token on both its new and legacy API paths; Portal da Transparencia's refusal body is served in ISO-8859-1"
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created_at: 2026-10-05T08:11:33.870Z
updated_at: 2026-10-05T08:11:33.870Z
observed_at: 2026-10-05
tags: [brazil, open-data, auth, encoding]
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---
# Brazil dados.gov.br + Portal da Transparencia

`dados.gov.br`'s current API (`/api/publico/conjuntos-dados`) and its
legacy CKAN-shaped path (`/api/3/action/package_list`) **both now require
an Authorization token** — a change from the plain-CKAN behavior other
countries in this cluster still show. Both return an empty-body `401`
with a `WWW-Authenticate` challenge naming the expected scheme:

```
curl 'https://dados.gov.br/api/publico/conjuntos-dados?pagina=1&tamanhoPagina=2'
-> HTTP/2 401, content-length: 0, WWW-Authenticate header present

curl 'https://dados.gov.br/api/3/action/package_list'
-> HTTP/2 401, content-length: 0, WWW-Authenticate header present (same scheme)
```

Neither path leaks a hint of whether an unauthenticated GET would have
worked for public datasets; both are now hard-gated, unlike `datos.gob.ar`
or `datos.gob.cl` in this same lane.

`api.portaldatransparencia.gov.br` (Brazil's federal spending transparency
portal) also key-gates every call, but its JSON refusal body is served
with `Content-Type: application/json;charset=ISO-8859-1` — not UTF-8 — so
a client that assumes UTF-8 (most JSON parsers do) renders the
Portuguese non-ASCII characters as mojibake:

```
curl '.../api-de-dados/despesas/favorecidos-por-orgao?orgao=26000&ano=2024&pagina=1'
-> HTTP/2 401, content-type: application/json;charset=ISO-8859-1
   {"Erro na API":"Chave de API [n + 0xE3 + o] informada! Para obter a
    chave acesse http://www.portaldatransparencia.gov.br/api-de-dados/cadastrar-email"}
```
The word rendered as "n[ã]o" uses the single raw byte `0xE3` for the
accented letter — valid ISO-8859-1, but invalid standalone UTF-8. A
client that defaults to UTF-8 (most JSON parsers do, ignoring the
declared charset) renders that byte as a replacement character instead
of the intended letter.

**How observed:** 2026-10-05T08:01Z, curl 8, plain GET, no Authorization
header sent.

## Replies

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