Brazilian Chamber of Deputies Open Data API

Free to Use Retry-After: 30s
79 B
Measured Score 0 50 100 Speed 9/30 Consistency 20/20 Security 20/20 Browser access 15/15 Transparency 15/15 TESTED 2026-08-10

Overview

The Brazilian Chamber of Deputies Open Data API provides free access to legislative information from Brazil s lower house of Congress. You can retrieve data about deputies, bills, votes, events, and parliamentary sessions in JSON or XML format. No authentication is required, making it ideal for civic tech and transparency applications.

Beginner Tip

Start with the /deputados endpoint to list all current deputies—it returns structured JSON you can immediately explore to understand how the data is organized.

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request
GET https://dadosabertos.camara.leg.br/api/v2/deputados?ordem=ASC&ordenarPor=nome
Result
HTTP 200 · application/json · 178,993 bytes · compressed
Response time
335 ms (median of 3) · fastest 321 ms
Transport
TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Let's Encrypt
Browser CORS
Allowed — Access-Control-Allow-Origin: *
Rate limit
Retry-After: 30s
Served by
envoy
Recorded
2026-08-10

Fields Returned

Top-level fields present in the response we captured, with the type and value we actually received.

Field Type Value received
dados array [1 item]
links array [1 item]

Captured Response

Captured from a real request to https://dadosabertos.camara.leg.br/api/v2/deputados?ordem=ASC&ordenarPor=nome on 2026-08-10. Long arrays and nested objects are truncated to keep the shape readable.

JSON Response · Captured
{
  "dados": [
    {
      "id": 204379,
      "uri": "https://dadosabertos.camara.leg.br/api/v2/deputados/204379",
      "nome": "Acácio Favacho",
      "siglaPartido": "MDB",
      "uriPartido": "https://dadosabertos.camara.leg.br/api/v2/partidos/36899",
      "siglaUf": "AP",
      "idLegislatura": 57,
      "urlFoto": "https://www.camara.leg.br/internet/deputado/bandep/204379.jpg",
      "email": "[email protected]"
    }
  ],
  "links": [
    {
      "rel": "self",
      "href": "https://dadosabertos.camara.leg.br/api/v2/deputados"
    }
  ]
}

Field Reference

id Unique identifier for the deputy in the system
nome Full name of the deputy
siglaPartido Abbreviation of the political party the deputy belongs to
siglaUf Two-letter abbreviation of the state the deputy represents
idLegislatura Identifier for the legislative term the deputy served in
urlFoto URL to the official photo of the deputy

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://dadosabertos.camara.leg.br/swagger/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.

HTTP 400 Requesting a path that does not exist application/json
{
  "status": 400,
  "title": "Requisição inválida",
  "detail": "Parâmetro(s) inválido(s).",
  "instance": "ordenarPor, ordem",
  "code": 5
}
HTTP 400 Sending an invalid value for "ordem" application/json
{
  "status": 400,
  "title": "Requisição inválida",
  "detail": "Parâmetro(s) inválido(s).",
  "instance": "ordenarPor, ordem",
  "code": 5
}

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

Empty results array The filter parameters used (like year or party) return no matching records
Start without filters to confirm the endpoint works, then add parameters one at a time
Pagination missing data Results are paginated and only the first page is returned by default
Check the links field in the response for next page URLs and loop through all pages to get complete data
Slow response for historical queries Queries spanning many legislative terms can return very large datasets
Use the idLegislatura or dataInicio/dataFim parameters to narrow your query to a specific date range

Measured Score Breakdown

Live HTTP request to the API endpoint

Speed 9/30
Consistency 20/20
Security 20/20
Browser access 15/15
Transparency 15/15
Endpoint Response Time 335ms

Fully tested on Aug 10, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS NO
Category Government
Difficulty Beginner
Endpoint last called: 2026-08-10

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