johnnywang2001

Domain WHOIS lookup toolkit for querying registrar, creation/expiry dates, nameservers, status, and registrant info. Use when looking up domain ownership, ch...

Test, match, extract, replace, explain, and validate regular expressions from the command line. Includes a library of 25+ common patterns (email, URL, IP, ph...

Analyze text files for word count, character count, line count, sentence count, reading time, speaking time, readability scores (Flesch Reading Ease, Flesch-...

Generate, install, and manage Git hooks with pre-built templates. Includes hooks for linting staged files, enforcing conventional commits, blocking debug sta...

Validate email addresses with syntax checks (RFC 5322), MX record verification, disposable/temporary email detection, and common typo suggestions. Use when v...

CIDR and subnet calculator for network engineers. Calculate network address, broadcast, host range, subnet mask, wildcard mask, and more from CIDR notation....

Generate secure passwords, passphrases, and PINs with entropy analysis. Use when the user needs a random password, passphrase, PIN, or wants to check how str...

Semantic Versioning (SemVer 2.0.0) toolkit for parsing, validating, comparing, bumping, and sorting version strings. Use when working with software versions,...

Generate placeholder text for design mockups, development, and testing. Supports classic Lorem Ipsum, hipster-style, and tech jargon. Output as plain text, H...

Convert, analyze, and generate colors from the CLI. Supports HEX, RGB, HSL, HSV, CMYK conversion, WCAG contrast ratio checking (AA/AAA compliance), palette g...

Measure network download speed, upload speed, and latency from the command line. Uses Cloudflare speed test endpoints and public DNS for latency measurements...

Monitor competitors' websites, social media, pricing, and product changes automatically. Use when the user wants to track competitor activity, detect website...

Fast TCP port scanner for network reconnaissance and security auditing. Scan hosts for open ports, detect common services, and identify potential attack surf...

Generate professional PDF invoices from natural language or structured data. Use when the user asks to create an invoice, bill a client, generate a receipt,...

Analyze git repository statistics including contributor rankings, lines of code by language, commit frequency by day/hour, monthly activity trends, and file...

Compare two text files or strings side-by-side or unified. Highlights additions, deletions, and changes with color. Supports word-level diff, ignore-whitespa...

Validate JSON data against JSON Schema, generate schemas from sample JSON, and convert schemas to TypeScript interfaces, Python dataclasses, or Markdown docs...

Generate realistic fake/mock data for testing and development. Supports names, emails, addresses, phone numbers, UUIDs, dates, lorem ipsum, credit cards, com...

Make HTTP requests from the command line with support for auth (Bearer, Basic, API key), custom headers, JSON/form body, response formatting, timing, and his...

Generate, validate, and analyze robots.txt files for websites. Use when creating robots.txt from scratch, validating existing robots.txt syntax, checking if...

Analyze code quality metrics including lines of code by language, cyclomatic complexity (Python), function/class counts, comment ratios, and largest file ran...

Track, analyze, and optimize LLM API spending across providers (OpenAI, Anthropic, Google, DeepSeek, etc.). Use when the user asks about API costs, token usa...

Manage .env files with validate, diff, template generation, merge, and missing-key checks. Use when working with environment variable files, comparing .env.l...

Look up IP geolocation, find your public IP, perform reverse DNS, and run bulk IP lookups. Uses free APIs (ip-api.com, ipify) with no API key required. No ex...

Format, minify, and lint SQL queries from the command line. Formats SQL with proper indentation and keyword casing, minifies by removing whitespace and comme...

Full-featured YAML toolkit for validating, formatting, converting, merging, and querying YAML files. Supports YAML-to-JSON, JSON-to-YAML, schema validation,...

Complete guide to upgrading OpenClaw's memory system for persistent, searchable context across sessions. Implements 6 upgrades including enhanced memory flus...

Analyze and visualize project dependency trees from manifest files. Supports Node.js (package.json), Python (requirements.txt, pyproject.toml), Go (go.mod),...