New connection
The portal pings the URL before saving so a typo or wrong password fails here, not on the first Claude query.
Used by Claude to address this database — e.g.
query connection=prod-orders sql=… Schemes:
postgres://, mysql://, mssql://, mongodb://, redis://, bigquery://PROJECT/DATASET, qdrant://, csv:/path. read_only — SELECT only
Comma-separated. Empty = every schema visible.