15 Services from utils.kagurazaka.dev

Evaluates arithmetic expressions with 64 significant digits of precision, supporting operators, functions (sqrt, log, trig), constants, units, and statistics

Add or subtract ISO 8601 durations to a date, or compute the difference between two dates in days, weeks, months, years, seconds, and business days (with country-specific public holidays).

Returns all holidays for a given country (and optionally a state/region) in a specified year, including each holiday's date, name, and type (public, bank, school, optional, observance).

Validates a phone number, identifies its country and line type, and returns E.164, international, and national formats using libphonenumber metadata.

Returns the current or specified time in one or more IANA time zones, including UTC offset, abbreviation, DST status, and weekday.

Run an RE2 regular expression on text, returning all matches with positions and capture groups, plus an optional replacement applied to the text.

Parses a cron expression (5 or 6 fields, with ranges, steps, L, W, #) into plain English and returns its next N scheduled run times in a specified time zone.

Converts a numeric value from one physical or digital unit to another (e.g. miles to kilometres, Fahrenheit to Celsius, GB to MiB) using the mathjs unit system.

Count tokens, characters, words, and lines in a text string for OpenAI tokenization encodings (o200k_base for GPT-4o+, cl100k_base for GPT-4)

Generates cryptographically random IDs in UUID v4, UUID v7 (time-ordered), ULID, or nanoid format, returning up to 100 at a time.

Decodes a JWT's header and claims, returning the algorithm, payload, expiry timestamp, and whether the token has already expired — without verifying the signature.

Compares two texts by lines, words, or characters and returns added/removed counts, a list of changes, and a unified diff.

Encode or decode text using base64, base64url, hex, URL (percent) encoding, or HTML escaping.

Computes MD5, SHA-1, SHA-256, SHA-512, SHA3-256, and Keccak-256 hashes of text or binary data (as UTF-8, hex, or base64), returning results in both hex and base64 encodings.

Validates a JSON value against a JSON Schema (draft-07 / 2019-09) and returns a list of every validation error with its path and keyword