General Utilities x402 offerings

Convert a number's string representation from one base (2-36) to another.

Unified line diff between two texts, plus an overall similarity ratio (0-1).

Convert an ISO 8601 datetime from one IANA timezone to another (handles DST automatically).

Convert an integer (1-3999) to a Roman numeral, or a Roman numeral back to an integer.

Convert an integer to its English ordinal form (1st, 2nd, 3rd, 4th, 11th, 21st...).

ISO 8601 week number, ISO year and ISO weekday (1=Monday) for a date.

ISIN (ISO 6166 security identifier) Luhn checksum validation.

Simplify a fraction to lowest terms and return its decimal value.

Parse a date/time string (ISO 8601 by default, or a given strptime format) into its components.

Text classification with your own custom labels (2-20) - categorize a support ticket, a review, or any text into the best-fitting label, with a confidence score and an alternate label. Powered by Jev…

Converts a datetime from one IANA timezone to another with correct DST handling. ISO-8601 input: bare wall-time strings are interpreted in the from_tz, fully-qualified offsets are honored. DST is han…

Resolves a d20 ability check, skill check, attack roll, or saving throw for tabletop RPGs. Rolls a d20 with an optional modifier and advantage/disadvantage, compares to a DC, and reports total, succe…

Current time API: the time right now in any IANA timezone (America/Chicago, Asia/Tokyo...) — local ISO timestamp, UTC ISO, unix epoch, human-readable string, and day of week. The sanity check every s…

Metric-imperial conversion API: miles↔km, lb↔kg, °F↔°C, gallons↔liters and 100+ more units, one call, exact factors. Deterministic and auditable — cheaper than burning reasoning tokens, zero arithmet…

Decode a vehicle identification number to full structured specs: make, model, year, trim, body style, engine details, transmission, drive type, and manufacturing plant as clean JSON. Accepts full 17-…

Parses any standard cron expression and computes its next 1-20 firing times in a chosen timezone, flagging malformed expressions clearly rather than letting a bad schedule silently fail in production…

Current time API: the time right now in any IANA timezone (America/Chicago, Asia/Tokyo...) — local ISO timestamp, UTC ISO, unix epoch, human-readable string, and day of week. The sanity check every scheduling, logging, and coordination agent needs. Deterministic and instant.

Decode a vehicle identification number to full structured specs: make, model, year, trim, body style, engine details, transmission, drive type, and manufacturing plant as clean JSON. Accepts full 17-char VINs or partials with * wildcards. For listing enrichment, insurance quoting, and vehicle-history agents.

Phone number validation API: is this number valid, what country is it from, and how should it be formatted (E.164, national, international)? Line-type detection included. For lead cleaning, forms, an…

VIN decoder API: turn any 17-character vehicle identification number into structured specs — make, model, year, trim, body class, engine (cylinders, displacement, horsepower, fuel), transmission, dri…

Look up any VIN and get the vehicle behind it: year, make, model, trim, body class, engine and transmission specs, fuel type, and where it was built. Registration-grade decode returned as structured …

Vehicle identification number decoder: full 17-character or partial VIN in, structured vehicle record out — make, model, model year, trim, series, engine, transmission, drive type, doors, and gross v…

Agent fortune API: a fortune cookie written specifically for AI agents ('A cached response is worth two upstream calls'), plus a lucky number and lucky HTTP status code. The cheapest, most delightful way to make your first x402 payment and verify your wallet stack works end to end. New fortune every call.

Random fortune generator: returns a freshly written one-line fortune every call, paired with a lucky number and a lucky HTTP status code for good measure. Priced as the cheapest possible test payment, it doubles as a simple way to confirm a wallet or payment integration is wired up correctly before moving to pricier endpoints. No two calls repeat the same fortune.