Accountant Expert

This gives Claude proper accounting fundamentals, from double-entry bookkeeping to financial statement generation. The implementation covers GAAP and IFRS principles with working code for journal entries, balance sheets, P&L statements, and cash flow reporting. It handles tax calculations across jurisdictions and includes VAT/sales tax logic. The double-entry validation ensures debits always equal credits before posting, which is the kind of guardrail you want when dealing with financial data. Best for building accounting tools, automating financial reporting, or when you need Claude to understand the mechanics of how transactions flow through a general ledger rather than just discussing accounting concepts abstractly.