An MCP server for creating, modifying, and validating Nomi.AI group chats — scaffold folders, add characters, and validate character limits.

App Store & Google Play character limits (name, subtitle, keywords, descriptions, IAP fields) as a typed lookup table — no network calls, zero dependencies.

Useful TypeScript utilities.

MCP server that audits & optimizes App Store and Google Play metadata (ASO): score a listing, check character limits, and clean up the iOS keyword field. By ASO Agency.

A highly customizable rich text editor React component built with Lexical - Features include mentions, tags, emoji picker, code blocks, image uploads, paste formatting, character limits, markdown shortcuts, and fully configurable toolbars

Map of named character references from HTML 4

List of legacy HTML named character references that don’t need a trailing semicolon

Map of named character references

Decode named character references

Map of invalid numeric character references to their replacements, according to HTML

micromark utility to handle character codes

micromark utility to classify whether a character is whitespace or punctuation

micromark utility to decode numeric character references

POSIX character classes for creating regular expressions.

Get the line and column number of a specific character in a string

Convert character encodings in pure javascript.

A regex to match any full character, considering weird character ranges.

Check if a character is a word character

Check if a character is a whitespace character

Parse JavaScript one character at a time to look for snippets in Templates. This is not a validator, it's just designed to allow you to have sections of JavaScript delimited by brackets robustly.