{"uid":"cap_XZAkyC6lK0n1fpEVn-lrl","slug":"irish-ppsn-validator-offline-77bb2cd8","name":"Irish PPSN Validator (Offline)","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.","url":"https://toll402.dev/v1/t/ppsn_ie_validate","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["ppsn"],"properties":{"ppsn":{"type":"string","description":"PPSN string, e.g. 1234567T or 1234567TA"}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_P4yyCmUXufFCBRHMg2OZn","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates an Irish Personal Public Service Number (PPSN) by checking its format and verifying the check letter using the official mod-23 weighted-sum algorithm, entirely offline.","exampleAgentPrompt":"Can you check whether the Irish PPSN '1234567T' is valid — verify both the format and the check letter?","exampleUseCases":[{"title":"KYC form pre-submission check","prompt":"Before we submit this user's Irish government form, can you validate that their PPSN '8765432FA' is correctly formatted and has the right check letter?"},{"title":"User registration PPSN verification","prompt":"A new user signed up with the PPSN '1234567TW' — can you check if that's a valid Irish PPSN so we don't let bad data into our system?"},{"title":"Bulk data cleaning spot-check","prompt":"I have a PPSN from our legacy database: '9876543RH' — can you verify if it passes the Irish mod-23 check-letter algorithm?"}],"resultDescription":"Returns a validation result indicating whether the submitted PPSN string passes both the format check (7 digits followed by a check letter and optional 'A' or 'H' modifier) and the mod-23 weighted-sum check-letter algorithm. Likely includes a boolean valid/invalid status and possibly a reason or error detail on failure.","failureModes":["PPSN with incorrect number of digits rejected as format error","Invalid check letter (mod-23 mismatch) returns validation failure","Unsupported trailing modifier letter (anything other than A or H) rejected","Empty or missing ppsn field returns a schema validation error","Non-string input types may cause a 400-level error"],"whenToPreferThis":"Choose this endpoint when you need a fast, offline, deterministic validation of an Irish PPSN with no external data dependencies. It is ideal for pre-submission checks, user registration flows, or data-quality pipelines where you only need format and check-letter correctness — not identity lookup or cross-referencing against a government database.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:48:27.465Z","isFirstParty":false}