medoxisto/toolbox-mcp

toolbox-mcp is an MCP server that adds 35 practical utility tools to AI agents like Claude, Cursor, and VS Code Copilot. It runs entirely on your own machine over standard input and output, with no network calls and no data sent anywhere. The tools fill in the categories where language models tend to struggle or cannot help at all. There are tools for reading exact text from images using optical character recognition, processing audio and video files, reading and editing PDFs, working with images and Excel spreadsheets, running exact math calculations, converting between time zones, applying regular expressions precisely, and handling encoding, hashing, and cryptographic tasks. The author notes that while AI models are good at reasoning and writing code, they cannot open audio or video files, and they can make subtle errors on arithmetic and regex tasks where the correct answer must be exactly right. The tools are organized into groups: reading images and media (OCR, frame extraction, video conversion), PDF operations (extract text, merge, split, rotate, watermark), file and office tasks (Excel to JSON, zip, HTML to Markdown, EXIF metadata), image processing (convert, resize, crop, compress, watermark), compute tasks (calculator, timezone converter, regex extractor, diff, QR codes), cryptographic tools (hash functions, HMAC, bcrypt, UUID, JWT decode), and text and data utilities (JSON formatting, CSV to JSON, Base64, URL encoding, slug generation, case conversion, word count). To add it to Claude Desktop or Cursor, you paste a short JSON snippet into your MCP config file. The snippet uses npx to download and run the server with no installation or build step. VS Code and Google Antigravity use the same approach with a slightly different config file location. Once configured, restarting the client is enough to make all 35 tools available. The project is licensed under MIT.