A local workbench for Python developers building internal review tools. Three modes turn your caller-supplied JSON into readable results: draw arithmetic and date checks, freight amount reconciliation, and Bates metadata range planning with snippet flags. Load clearly labeled synthetic samples, paste or import your input, inspect the result and download JSON or CSV reports. Freight also supports flat CSV batches of up to 100 records with per-row results and errors. Includes full source, a local FastAPI server, pinned dependencies, setup launchers, sample inputs/outputs and regression tests. Runs on your own computer without an AI subscription, API key, analytics or billing connection. No OCR, PDF stamping/redaction, legal certification, insurance verification or payment approval is included. All outputs require human review. One-time files for this edition; no hosted service, resale rights, future updates or guaranteed savings.