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ArchiveSeptember 13, 2026Mastermind
Case File · Audit · No. 078

Daily Casefile · Audit

The Yield Ledger of Skyplot Urban Farm

9 min

Skyplot Urban Farm supplies weekly subscription boxes to borough residents and files a quarterly harvest yield and subscription-box ledger with the NYC Urban Agriculture Grant Office, which uses the figures to calculate performance-linked subsidy payments. The grant formula rewards farms that convert a high proportion of raw yield into fulfilled subscriber boxes. An anonymous tip to the Grant Office suggests that Skyplot's Q2 2026 ledger understates tomato yield in order to conceal the gap between what was actually harvested and what was delivered to subscribers — a gap that implies some portion of the crop was diverted and sold off-books at a higher rate. You are asked to determine whether any filed line contradicts the supporting records.

The scene

Skyplot Urban Farm, a commercial rooftop growing operation on a twelve-storey building in Brooklyn, New York, present day (summer 2026 harvest season)

Source documents

  • NYC Urban Agriculture Grant Office — Rooftop Sensor Yield Survey, Q2 2026
  • Skyplot Urban Farm — Subscriber Box Packing Slips, Q2 2026 (aggregate summary)
  • Skyplot Urban Farm — NYC Approved Growing Plan Register, Q2 2026
  • Email from Grant Office Field Inspector Tomás Oviedo to Skyplot Operations Manager, dated September 3, 2026

Play today’s Audit.

This case first aired on September 13, 2026. A fresh audit runs every morning — same rules, five minutes, one solution.