111 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
The current time, or a given time, in one or more IANA time zones, with UTC offset, abbreviation, whether daylight saving time is in effect, and the weekday. Give a local time with from_tz to convert it, handling DST cor...
Validate an IBAN: country, correct length, ISO 13616 checksum, bank code and BBAN, with a reason when invalid (likely typo, wrong length). Works offline for about 80 countries. Use before sending a bank transfer or savin...
Validate JSON (with line and column of errors), pretty-print, minify, sort keys, list all paths, show its shape, or extract a value by path like $.items[0].name or $.items[*].
Use this service before importing or publishing JSON to check it against a restricted draft-07 schema. Send dataJson and schemaJson as JSON-encoded strings. Max 256 KiB UTF-8 each, depth 32; bounded node and work limits....
French SIRET (14-digit business establishment number) Luhn checksum validation. Note: the rare La Poste SIREN exception to the standard rule is not applied.
US ABA bank routing number (9-digit) checksum validation.
ISIN (ISO 6166 security identifier) Luhn checksum validation.
ISBN-10 or ISBN-13 checksum validation (auto-detected by length).
IMEI (15-digit mobile device identifier) Luhn checksum validation.
Currency exchange rates and FX conversion, official ECB reference rates for USD, EUR, GBP, JPY and 25 more. Use to convert an amount between currencies with an official, citable rate: the European Central Bank's referenc...
Offline validator for a Romanian CUI (company tax ID). Strips an optional 'RO' prefix, applies weights 7-5-3-2-1-7-3-2 to the digits preceding the check digit (right-to-left), sums the weighted products, multiplies by 10...
UK VAT number format + check-digit test: Checks a UK VAT number's format and HMRC check digits (mod 97 / 9755). Catches fake or mistyped VAT numbers instantly without an HMRC call. Use /v1/business/check to confirm live...
Check whether a phone number is valid and possible, find its country and type (mobile, fixed line, toll free and others), and format it as E.164, international and national (libphonenumber metadata).
Validate and parse phone numbers in international E.164 form: extract the country calling code and region, the national number, and the canonical +E.164 string. Single number or a batch of up to 50. Format validation, no...
Validate a JSON value against a JSON Schema and coerce common LLM-output mistakes (numbers as strings, stringified booleans, scalars where arrays are expected, missing defaults, extra properties). Returns the coerced val...