FastX402 Lab – Localized Date Formatter

Use this endpoint when you need to render a date as a localized, human-readable string in one of five supported languages (English, Turkish, German, French, Spanish) using a flexible date-fns/Unicode pattern. Prefer it over generic date libraries when you need a simple, stateless API call for i18n date formatting without setting up a locale library in your environment.

• Missing required 'date' query parameter — returns error
• Missing required 'pattern' query parameter — returns error
• Invalid ISO 8601 date string — may return error or unexpected result
• Unsupported locale value outside en/tr/de/fr/es — returns validation error
• Invalid or malformed date-fns pattern — may return error or garbled output
• Payment not provided or insufficient — x402 payment required response