General Utilities x402 offerings

IMEI (15-digit mobile device identifier) Luhn checksum validation.

Format a numeric amount with thousands separators, a chosen decimal precision and a currency symbol.

Human-readable relative time ('2 hours ago', 'in 3 days') between a datetime and a reference (default now).

Translate up to 200 text segments in a single call - the same result that would otherwise take 200 separate calls to translate a whole file. Markdown, HTML and {x} placeholders preserved per segment,…

French SIRET (14-digit business establishment number) Luhn checksum validation. Note: the rare La Poste SIREN exception to the standard rule is not applied.

Format an ISO 8601 datetime using a strftime pattern.

Replace regular expression matches in text, with an optional max-replacement count.

Ask up to 20 typed yes/no, multiple-choice or ordinal-scale questions about one shared piece of context in a single call - each answered with a real probability (Jev decision primitives), not generat…

ISO 13616 IBAN mod-97 checksum validation, with optional BIC (ISO 9362) format check.

Convert text between case styles: snake_case, camelCase, PascalCase, kebab-case, Title Case, CONSTANT_CASE.

Split an integer amount of cents among N ratios with zero rounding loss (Fowler's allocation algorithm) - the parts always sum back to the original amount.

Slugify text: strip accents, lowercase, replace non-alphanumerics with a separator.

Test a regular expression against text; returns match status, capture groups and span.

Flesch Reading Ease and Flesch-Kincaid Grade Level scores for English text (standard public formulas, heuristic syllable counting).

Convert decimal degrees to degrees/minutes/seconds, or DMS back to decimal degrees.

Count weekdays (Mon-Fri) between two dates, inclusive of both endpoints.

Luhn (mod 10) checksum validation, as used by most payment card numbers.

ISBN-10 or ISBN-13 checksum validation (auto-detected by length).

Language detection: identify which of 20 common languages (or "other") a text is written in, with a confidence score. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unav…

Intent detection: classify text as a question, request, complaint, compliment, or other, with a confidence score and an alternate label. Powered by Jev, with an automatic Groq-hosted LLM fallback if …

Duration between two ISO 8601 datetimes, as total seconds and a days/hours/minutes/seconds breakdown.

Convert a value between units of length, mass, volume or temperature (C/F/K).

Detect whether hex-encoded bytes are ASCII, UTF-8, or UTF-16 with a BOM, by decode-validity and BOM presence (not statistical language detection).

EAN-8 or EAN-13 barcode checksum validation (auto-detected by length).