Read a Spanish Norma 43 (Cuaderno 43 / AEB43 / CSB43) bank statement into structured JSON.

Returns every account (CCC, computed IBAN, bank, holder, period, opening/closing balance, debit/credit totals, breakdown by AEB common concept) and its movements (dates, signed amount, running balance, concept, references, record-23 texts, decoded SEPA fields in modalidad 3). Checks the file the way a bank does: record 33 counts and totals, opening + movements = closing, record 88 record count, dates, signs and field formats. valid is false when any error is found; each issue names its line.

Args: content: The file as text (paste the .n43/.txt content). content_base64: The raw file bytes as base64 (use for CP850/Latin-1 files with Ñ and accents). include_movements: False returns only accounts, totals and checks. max_movements: Cap on returned movements across all accounts (default 2000, max 20000).

Convert a Norma 43 statement to CSV (one row per movement, with IBAN, running balance and concept names).

Defaults suit Spanish Excel (';' separator, decimal comma). Free-text cells are protected against spreadsheet formula injection. Integrity issues are returned alongside the CSV.

Bank reconciliation (conciliación bancaria): match bank movements to expected items, deterministically.

Bank side: a Norma 43 file (content / content_base64) or a movements list of {id, date, amount, text}. Expected side: expected list of {id, date, amount, reference?, counterparty?} such as issued invoices (+, cobros), supplier invoices or payroll (-, pagos), or ledger entries. Signs: + is money in, - is money out, as on the statement.

Finds 1:1 matches, one transfer paying several invoices (1:N) and partial payments (N:1). Each match has a 0-100 score, a confidence (alta/media/baja) and the evidence used (amount, invoice reference found in the bank concept, counterparty name, date distance, uniqueness). Ties are never guessed: they are returned under ambiguous. Weak candidates go to suggestions. Group matches require a unique exact sum plus reference or name evidence.

Args: expected: Items to find in the bank (max 5000). content: Norma 43 file as text (alternative to movements). content_base64: Norma 43 raw bytes as base64. movements: Bank movements if you do not have a Norma 43 file (max 5000). date_window_days: Max days between bank date and item date (default 10, max 180). amount_tolerance: Max amount difference accepted, e.g. "0.50" for bank fees (default "0", max "10"). max_group_size: Max items combined in 1:N / N:1 matches (1 disables grouping, max 5). min_score: Minimum score to confirm a match (default 50).

Validate a Spanish/EU banking identifier. Free.

Recognises IBAN (any SEPA country, plus the inner CCC check for ES), CCC (20 digits, returns the IBAN), NIF/NIE/CIF (also ES-prefixed VAT numbers), SEPA creditor identifier (AT-02) and Norma 43 Referencia 1. Returns valid, the detected kind, normalized form and, when wrong, the expected control digits.

Args: value: The identifier, spaces and dashes allowed. kind: auto | iban | ccc | nif | creditor_id | reference1.

Compute the Spanish SEPA creditor identifier (AT-02, 'identificador de acreedor') from a NIF. Free.

Format: ES + 2 check digits + 3-character business code (default '000') + NIF, per EPC262-08. Needed to issue SEPA direct debits (adeudos / remesas de recibos, Cuaderno 19.14).

Credit price of each tool and where to buy credits. Free.

Remaining credits on your KeyFlint license. Free.