Scored across 4 tools
Each tool has a clear primary purpose: invoice_create (full invoice PDF), act_create (closing act PDF), payment_qr (standalone payment QR), and amount_in_words (number-to-text). invoice_create and payment_qr overlap on payment QR generation, but the descriptions explicitly clarify when to use which (embedded QR vs. standalone).
Three tools follow a consistent noun_action pattern (invoice_create, act_create, amount_in_words), and payment_qr is a minor deviation using a noun compound without a verb. Still uniform snake_case and readable throughout.
Four tools is slightly thin but well-scoped to the document-generation domain, with each tool earning its place. No redundant or filler tools.
Covers the core Russian document workflow: invoices, closing acts, standalone payment QR, and amount-to-words conversion, with amount_in_words complementing the document tools. Minor gaps exist (no other document types like contracts/reciepts that amount_in_words hints at, no template customization), but the stated purpose is well covered.