Credential Type Matrix

Use this matrix to select the right credential type for each integration.

Credential type	Typical target	Key fields	Canonical page
basic	HTTP backend with basic auth	username, password	Basic Auth
api_key	API key-protected backend	api_key, key_in, key_name	API Key
oauth2_client	OAuth2 provider/token endpoint	client_id, client_secret, token_url	OAuth2 Client Credentials
mtls	Certificate-authenticated backend	client_certificate, client_private_key, optional ca_certificate	mTLS Client Certificate
mongodb	MongoDB	mongodb_connection_uri	MongoDB
postgres	PostgreSQL	postgresql_connection_string	PostgreSQL
sqlserver	SQL Server	sqlserver_connection_string	SQL Server
oracle	Oracle DB	oracle_connection_string	Oracle
redis	Redis	redis_connection_string	Redis
smtp	SMTP mail server	smtp_host, smtp_port, smtp_username, smtp_password	SMTP
sendgrid	SendGrid mail API	sendgrid_api_key, sendgrid_from_address	SendGrid
kafka	Kafka brokers	kafka_bootstrap_servers, optional SASL/TLS fields	Kafka
Env-backed mode	Any secret-bearing type	*_use_env, *_env_var	Environment Variable Credentials

Choose the least complex type that still satisfies backend security requirements.