Here is a list by type of connector.

Personal

Connector	MFA
Nubank	First time only
Itaú	Yes*
Caixa Economica Federal	No
Santander	No
Bradesco	Yes*
Banco do Brasil	No
Banco Inter	Yes
Mercado Pago	No
Modal Mais	Yes
Ailos	Yes*

*Ailos, Bradesco and Itaú only ask for MFA validation the first time you connect with a joint account.
Having a joint account means that is shared with someone else like a partner. In these cases, the connector will require the user to select the user and then will be prompt to complete one-time MFA parameter.

Business

Connector	MFA
Santander Empresas	Admin access: Yes / Operator access: No
Bradesco Empresas	Admin access: Yes / Operator access: No
Itaú Empresas	Some accounts
Caixa Economica Federal Empresas	No
Banco do Brasil Empresas	Yes
Banco Inter Empresas	No

Investment

Connector	MFA
B3 CEI	Yes
XP Investimentos	Yes
BTG Pactual	Yes
NuInvest	Yes
Agora Investimentos	No
Rico Investimentos	Yes
Orama Investimentos	No
Genial Investimentos	No
Clear	No

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You can see connector's status on our status page