Lists tables the agent is permitted to read, with row estimates. Start here — guessing table names wastes calls against the rate limit.

Columns, types, nullability and defaults for one table. Masked columns are marked — they can be filtered on, but their values are never returned.

Executes a single SELECT inside a read-only transaction, capped at 200 rows. Use $1, $2 … placeholders with the params array — never string-concatenate values into the SQL.

Runs a single INSERT, UPDATE or DELETE. The change is first executed in a rolled-back transaction to measure exactly how many rows it affects, then that number is shown to a human for approval. UPDATE/DELETE without a WHERE clause is always refused.