Manifests as a weathered black notebook, small enough to fit in a palm, with pages that seem made of dark membrane rather than paper. Entries write themselves in glowing green ink when financial anomalies occur - no human hand required. The cover bears only a simple embossed symbol: a circle with a line through it, the Bureau's标记 for buried funds. The notebook is warm to the touch and hums faintly, as if constantly calculating.

The Black Budget passively monitors all financial activity within the Containment Zone, automatically recording bonus payouts, suspicious wins, and any transaction that doesn't match expected patterns. Players whose financial trails show anomalies get flagged for Bureau review, potentially triggering audits that can strip clearance levels. Those who maintain clean financial records across multiple leagues earn the Black Budget's favor, receiving preferential access to special events and exclusive payouts.