FastX402

Parse a User-Agent string into browser, engine, operating system, device and CPU (with versions), using the widely used ua-parser-js rules. Use it for analytics, logs and bot checks.

Convert text in any script (Turkish, Cyrillic, Chinese, Greek, Arabic, accents) to plain ASCII Latin letters, plus a URL slug. Use it for file names, IDs, search keys and systems that only accept ASCII.

Facts about a country by ISO code or English name: official and native name, capital, currencies, languages, calling codes, continent and flag emoji. Use it to fill forms, format addresses or check country codes.

Look up an ISO 4217 currency by code (TRY, USD, JPY): official name, numeric code, number of decimal digits and the countries that use it. Use it to format money correctly and validate currency codes.

Convert between hex and Base58 (the Bitcoin/Solana alphabet), e.g. to decode a Solana address or signature to its raw bytes or encode bytes as Base58. Returns both forms and the byte length.

Length of a text in the units that matter: UTF-8 bytes, UTF-16 units, Unicode code points, user-perceived characters (graphemes, so a flag or family emoji counts once), words and lines. Use it to check limits for APIs, tweets, databases and prompts.

Validate a UUID and read what is inside: version, variant, nil/max, and for version 1 and 7 the embedded timestamp (plus the node and clock sequence of v1). Use it to debug IDs from logs, APIs and databases.

Validate a ULID and decode its millisecond timestamp and random part. Use it to date records, sort IDs by creation time or debug identifiers from logs and databases.

Parse a URL query string into JSON with WHATWG decoding (plus signs, percent escapes, repeated keys become arrays) and keep the original pair order. Use it to read callback URLs, tracking links and API requests.

Percent-encode or decode text in the four URL flavours: component (encodeURIComponent), whole URL (encodeURI), form (application/x-www-form-urlencoded, spaces as +) and their decoders. Use it when a wrong escape breaks a link or a signature.

Encode UTF-8 text to Base32 (RFC 4648 or the base32hex alphabet, padded or not) or decode Base32 back to bytes, hex and text. Use it for TOTP secrets, DNS names and compact identifiers.

CRC-32 (the zip/PNG/gzip checksum) or Adler-32 (zlib) of UTF-8 text or hex bytes, as number and hex. Use it to verify downloads, file headers and protocol frames.

Computes multiple checksums (MD5, SHA-1, SHA-256, SHA-512) for input text and compares against a provided hash. Returns match status and all computed hashes.

Decodes a 4-byte function selector into its human-readable signature using common ABI patterns. Returns function name and parameter types when recognized.

Validates commit messages against Conventional Commits, Angular, or custom patterns. Returns validation status, type, scope, and suggestions.

Infers a JSON Schema from example JSON data. Useful when agents need to document APIs, validate similar data, or generate type definitions from samples.

Converts cron expressions to natural language descriptions. Returns plain English explanation of schedule for agents documenting automation or explaining configs to users.

Looks up the country and locality for a postal code via zippopotam.us, then reports whether that country observes a public holiday today or on a given date. Use when routing or validating international mail or scheduling.

Parse RSS 2.0 or Atom XML feed from URL and return normalized JSON with title, items, dates, and links.

Evaluates a 5-7 card poker hand and returns rank name, rank value, and comparison score. Supports Texas Hold'em and standard poker rules.

Searches Wikipedia and returns matching article titles with brief snippets. Returns up to 10 results ranked by relevance.

Parse a Content-Disposition header into its disposition type, parameters, and decoded filename.

Returns Unicode code points, names, general categories, and scripts for each character in a short string.

Map an HTTP status code to its standard phrase, response class, and common protocol meaning.

Calculate a percentile from a comma-separated numeric list using a selected interpolation method.

Identifies likely file types from a short hex or base64 byte prefix and returns the detected MIME type and common extensions.

Searches Crossref scholarly metadata by title or topic and returns compact matches with DOI, title, authors, venue, and publication date.

Convert a JSON array of row objects into an aligned Markdown table.

Formats and consistently indents a GraphQL query, mutation, or schema document.

Rounds a decimal value to a requested number of places using an explicit mode such as half-up, half-even, floor, or ceiling. Use it when binary floating-point rounding would produce unreliable output.

Calculates the absolute difference and percentage change from an old value to a new value. Use it for deterministic comparisons, reports, and metric transformations.

Parse JSON and return its compact minified representation with unnecessary whitespace removed.

Returns the exact prime factorization of a bounded positive integer, including repeated factors and exponent notation. Use it for arithmetic, number-theory, and divisibility tasks requiring reliable computation.

Removes duplicate lines from supplied text while preserving the first-occurrence order and returns the cleaned text plus counts. Use it to normalize lists, logs, imports, or generated line-oriented data.

Wraps plain text to a requested column width with deterministic handling of whitespace, long words, and newline boundaries. Use it when generating fixed-width output, terminal text, email bodies, or formatted prompts.

Expands shortened IPv6 addresses to full notation, validates format, and identifies address type (global, link-local, loopback, etc.). Returns canonical form and classification.

Calculates the great-circle distance in miles and kilometers between two US ZIP codes. Returns coordinates and distance or error if either ZIP is invalid.

Wraps text in a clean ASCII box with configurable border style (single, double, rounded). Returns the formatted box ready to print in terminals or monospace contexts.

Calculates compound interest with principal, rate, time, and compounding frequency. Returns final amount, total interest earned, and optional year-by-year breakdown.

Converts Unix timestamps (seconds or milliseconds) to ISO 8601 and human-readable UTC, or parses ISO/human dates back to epoch. Use for timestamp interchange between systems.

Determines if a given year is a leap year and returns the next/previous leap years. Use for calendar logic and date validation.

Formats JSON with configurable indentation or compacts it to single-line. Returns formatted string with byte size comparison.

Computes keccak256 hash exactly as Solidity does for packed arguments. Returns the hash that Solidity's keccak256(abi.encodePacked(...)) would produce for given types and values.

Returns the latest stable version number and release date for any Python package on PyPI. Useful for dependency updates and compatibility checks.

Scans Dockerfile and Kubernetes YAML for security issues (root user, latest tag, missing resource limits) and returns violation list with severity. Use before deploying containers to catch common misconfigurations.

Parses Nginx, Apache, or Syslog lines into structured JSON and returns error/status code statistics. Returns parsed fields and frequency counts for status codes and error levels.

Validates a card number using the Luhn algorithm and identifies the card scheme (Visa, Mastercard, Amex, Discover, etc.) from the number prefix and length. Returns validity, scheme, and expected length.

Checks compatibility between two open source licenses (MIT, GPL, Apache, BSD, etc.) and returns obligations and restrictions. Uses SPDX identifiers to determine if licenses can be combined in a project.

Parses SRT and WebVTT subtitle files, strips timestamps and metadata, and returns clean plain text and structured JSON blocks of dialogue.

Extracts all unique CSS class names from HTML or JSX markup. Returns sorted array of class names found in class or className attributes.