clickhouse.list_databases low conf highallow
Enumerates every database name on the ClickHouse cluster, exposing the schema layout to the caller.
clickhouse.list_tables low conf highallow
Lists the tables within a specified database, revealing that database's schema structure to the caller.
clickhouse.run_chdb_select_query medium conf highaudit
Runs ad-hoc SQL through chDB's embedded engine, which can pull data from local files, S3, and remote endpoints reachable by the MCP host.