Verified validation of structured identifiers — IBAN, payment cards, ISBN-13 and VIN — for AI agents. Runs the real checksum algorithms (mod-97, Luhn, mod-10, ISO 3779) instead of letting the model guess, and returns structured results with clear errors.
Enables searching for books by title, author, or keyword, retrieving edition details by ISBN, and accessing author profiles and canonical work records through the Open Library API.