# B3 Authentication APIs

**Canonical:** https://apis.io/apis/b3-exchange/b3-authentication-apis/  
**Provider:** B3 (Brasil Bolsa Balcão) — https://apis.io/providers/b3-exchange/  
**Base URL:** https://developers.b3.com.br:8065  
**Documentation:** https://developers.b3.com.br/apis/autenticacao

B3 Authentication APIs is one of 10 APIs that [B3 (Brasil Bolsa Balcão)](https://apis.io/providers/b3-exchange/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Authentication. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.

OAuth 2.0 token issuance APIs used across the B3 API catalog - Client Credentials flows (plain, plus category_ID, key, or scope parameter variants) and Resource Owner Password Credentials flows.

## Machine-readable artifacts (5)

- **Documentation** — https://developers.b3.com.br/apis/autenticacao
- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/b3-exchange/refs/heads/main/openapi/b3-exchange-auth-client-credentials-openapi.json
- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/b3-exchange/refs/heads/main/openapi/b3-exchange-auth-ropc-openapi.json
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/b3-exchange/refs/heads/main/overlays/b3-exchange-auth-client-credentials-overlay.yaml
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/b3-exchange/refs/heads/main/overlays/b3-exchange-auth-ropc-overlay.yaml

## Other B3 (Brasil Bolsa Balcão) APIs (9)

- [B3 Investor Area (Área do Investidor) APIs](https://apis.io/apis/b3-exchange/b3-investor-area-apis/)
- [B3 Tesouro Direto APIs](https://apis.io/apis/b3-exchange/b3-tesouro-direto-apis/)
- [B3 OTC (Balcão) APIs](https://apis.io/apis/b3-exchange/b3-otc-balcao-apis/)
- [B3 Listed Markets (Listados) APIs](https://apis.io/apis/b3-exchange/b3-listed-markets-apis/)
- [B3 ISIN API](https://apis.io/apis/b3-exchange/b3-isin-api/)
- [Banco B3 APIs](https://apis.io/apis/b3-exchange/b3-banco-b3-apis/)
- [B3 Insurance (Seguros) APIs](https://apis.io/apis/b3-exchange/b3-insurance-apis/)
- [B3 Market Data Feed (UMDF)](https://apis.io/apis/b3-exchange/b3-market-data-feed-umdf/)
- [B3 UP2DATA](https://apis.io/apis/b3-exchange/b3-up2data/)

## Tags

Authentication

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/b3-exchange/b3-authentication-apis/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/b3-exchange/.