Pocketful: Four Agents in BAND

Pocketful is a wallet application built by four Codex agents in BAND. The coordinator assigned files and acceptance criteria. A core builder implemented state and service behavior, an interface builder built the browser flows and packaging, and an independent verifier tested committed revisions against the specification. The verifier found a browser failure after the public Stage 2 tests passed: clicking Pay on an ordinary HTTP origin sent no request. The interface builder fixed the key generator, and an independent check confirmed one successful payment while preserving retry behavior. Accepted stages were frozen before being copied forward. The application supports payments, requests, bill splits, authorizations, historical statements, corrections, refunds and atomic correction batches. It uses seeded test balances and has no bank connections. An anonymous public clone passed 147, 182, 188 and 193 checks across the four stage folders: 710 executions, including repeated inherited checks. The final stage also passed 148 independent functional groups. These are local results; official judging is pending. The public repository preserves 20 seat commits, four acceptance tags, the complete 5,418-message room export, reproduction instructions and resource accounting. The video shows the real room, a review handoff and the running application.