{"id":"t/mersis_validate","kind":"forged","name":"mersis_validate","description":"Offline structural validator for a Turkish MERSİS number (16-digit central trade registry identifier). Normalizes input (strips spaces/dashes), checks it is exactly 16 digits, and verifies the first 10 digits pass the standard VKN (Vergi Kimlik Numarası) checksum algorithm as a structural plausibility check.","tags":["validator","turkey","mersis","vkn","offline"],"method":"POST","path":"/v1/t/mersis_validate","url":"https://toll402.dev/v1/t/mersis_validate","specUrl":"https://toll402.dev/v1/spec/t/mersis_validate","price":"$0.001","priceUsd":0.001,"available":true,"inputSchema":{"type":"object","properties":{"value":{"type":"string","description":"MERSİS number to validate, digits optionally separated by spaces or dashes"}},"required":["value"]},"example":{"value":"1234567899123456"},"meta":{"creator":null,"createdAt":"2026-09-10T00:30:43.404Z","calls":5,"failures":4,"network":false,"notes":"Pure offline validator: strips spaces/dashes, requires exactly 16 digits, then runs the standard 10-digit VKN checksum algorithm (weighted mod-9/mod-10 transform per digit) on the first 10 digits to flag structurally plausible MERSİS numbers; no network calls used."}}