Gantry

Gantry is a governed execution boundary for agent-generated SQL and data jobs. It decides whether a statement may run, bounds it while it runs, and decides afterwards whether the result may be believed.

pip install data-gantry

The distribution is data-gantry; the import is gantry.

Where to start

SQL	the governed query path, and the agent-facing tool
Policies	what a policy can express, and who enforces it
Materialization	letting an agent build a table, and checking it
Flink backends	batch and stream jobs, and what each guarantees
Adapters	the interfaces a new backend implements
API reference	every public symbol, generated from source

Seven runnable examples live in examples/, indexed by task. The quickest needs nothing but a Python environment.

The idea in one paragraph

An engine answers "did the statement run". That is not the same question as "is the answer usable" — a CREATE TABLE AS whose join matched nothing succeeds, and a streaming job that has restarted forty times is RUNNING. Gantry answers the second question, and refuses the statement outright when a policy says it should never have been asked.