{"id":"t/ppsn_ie_validate","kind":"forged","name":"ppsn_ie_validate","description":"Offline validator for an Irish PPSN (Personal Public Service Number): checks the 7-digit + 1 check-letter (+ optional trailing 'A' or 'H' modifier letter) format and verifies the check letter using the published mod-23 weighted-sum algorithm (weights 8..2, optional modifier adds 9 or 72). Processes a single PPSN only; no network access or storage.","tags":["validator","ireland","ppsn","offline","identity"],"method":"POST","path":"/v1/t/ppsn_ie_validate","url":"https://toll402.dev/v1/t/ppsn_ie_validate","specUrl":"https://toll402.dev/v1/spec/t/ppsn_ie_validate","price":"$0.001","priceUsd":0.001,"available":true,"inputSchema":{"type":"object","properties":{"ppsn":{"type":"string","description":"PPSN string, e.g. 1234567T or 1234567TA"}},"required":["ppsn"],"additionalProperties":false},"example":{"ppsn":"1234567T"},"meta":{"creator":null,"createdAt":"2026-09-10T01:24:13.628Z","calls":11,"failures":1,"network":false,"notes":"Pure offline validator: parses PPSN into 7 digits + check letter + optional A/H modifier via regex, computes mod-23 weighted checksum (weights 8..2, +9 for 'A' modifier or +72 for 'H') per Irish Revenue algorithm, maps remainder to expected letter (0=W,1-22=A..V), and compares to the supplied check letter; no external data sources used."}}