Dsh Checkdigit
TYEclipse/dsh-checkdigit · skills
Check-digit mathematics toolbox for DeepSeek Harness (dsh): generate, validate and detect check digits for 13 schemes (Luhn, Verhoeff, Damm, ISBN, EAN, UPC, ISIN, CUSIP, IBAN, CAS, ABA) plus ISBN-10/13 conversion — zero.
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2026-09-04Last updated
TypeScriptLanguage
MITLicense
Key features
- Check-digit mathematics toolbox for DeepSeek Harness (dsh): generate, validate and detect check digits for 13 schemes — Luhn, Verhoeff, Damm, ISBN-10, ISBN-13, EAN-8, EAN-13, UPC-A, ISIN, CUSIP, IBAN, CAS Registry Number and ABA routing number — plus an ISBN-10 ⇄ ISBN-13 converter.
- Language models routinely botch check-digit arithmetic: wrong card-number checksums, ISBNs that fail validation, IBANs with impossible check digits.
- Compute the check digit for a payload and return the complete identifier.
- Verify the check digit of a full identifier.
- Supported scheme values and their payloads
Install command
dsh plugin --profile web add github:TYEclipse/dsh-checkdigit