Returns high-level metadata for the Telco Customer Churn dataset, including the available analytics table, row count, column count and target variable. Use this tool before deeper analysis when dataset context is unknown.

Lists all available columns in the customers dataset along with their data types. Use this tool to discover available fields before running specific column queries.

Provides statistical summaries for a specified column in the customers table. For numeric columns, returns min, max, mean, median, and null count. For categorical columns, returns unique category count and top frequent categories.

Calculates overall customer count, churned customer count, retained customer count, and historical churn rate across the entire Telco dataset. Churn rate is returned as a ratio between 0.0 and 1.0.

Calculates customer count, churned customer count, and historical churn rate grouped by one approved categorical dimension such as contract, internet_service, payment_method, paperless_billing, tech_support, online_security, etc.

Executes one read-only analytical SQL query against the customers dataset. Use this tool only when the predefined analytics tools cannot answer the requested question. Mutation, DDL and multi-statement queries are strictly rejected by security boundaries. Results are capped at a maximum of 100 rows.