Claude Code Hackathon — Close the Books
Claude Community Events
- When
- Saturday 7 November 2026 · 09:00–21:00 CET
- Where
- Madrid · La Nave
- Entry
- Free
One-day Claude Code Build Day on building an autonomous finance office.
Challenge and dataset designed by Talky, AI for accounting, in collaboration with UCppM, UCM competitive programming association.
The challenge: Build an AI finance team, then let it close the books
Every team gets the same synthetic multi-entity company: invoices, POs, bank transactions, contracts, vendor data, general ledger and ERP history. Your job is to turn that mess into a safe, traceable, audit-ready close with as little human intervention as possible.
A live leaderboard scores accounting accuracy, reconciliation, fraud detection, safe autonomy and auditability, and a hidden benchmark decides the final. Duplicates, tax errors and suspicious bank changes included.
When: Saturday, November 7 at 09:00 → 21:00
Where: La Nave, Madrid.
Capacity expected is ~70 seats.
Notes
- Food & drinks will be provided throughout the day
- Bring your own laptop
- Application review is on a personal basis, not team basis. You will be put in teams
Last checked 1 Nov 2026.
