Dados B3 · Authentication Profile

Dadosb3 Com Authentication

Authentication

Dados B3 secures its APIs with apiKey across 2 declared security schemes, as derived from its OpenAPI definitions.

FinanceDataBrazilB3Company
Methods: apiKey Schemes: 2 OAuth flows: API key in: header, query

Security Schemes

ChaveApiNaUrl apiKey
· in: query (chave)
ChaveApi apiKey
· in: header (X-API-Key)

Source

Authentication Profile

Raw ↑ 
generated: '2026-11-05'
method: derived
source: openapi/dadosb3-com-openapi.json
summary:
  types:
  - apiKey
  api_key_in:
  - header
  - query
schemes:
- name: ChaveApiNaUrl
  type: apiKey
  in: query
  parameter: chave
  description: Alternativa ao cabeçalho para clientes que só abrem URL (navegação de IA). Fica
    no histórico e nos logs de quem a usa.
  sources:
  - openapi/dadosb3-com-openapi.json
- name: ChaveApi
  type: apiKey
  in: header
  parameter: X-API-Key
  description: 'Chave grátis (200 consultas/dia) ou Pro em /assinar. Abertos sem chave (limite
    por IP): fatos, indicadores, múltiplos e dividendos de qualquer ticker, ficha e ranking
    de FII. WEGE3, MXRF11, /hoje, /saude e a metodologia são abertos. Exigem chave: as_of, versões,
    preços, screener, /dump.'
  sources:
  - openapi/dadosb3-com-openapi.json

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