I Built 44 MCP Developer Tools — Here Are the 10 That Save Me the Most Time

I maintain mcp-devutils , an MCP server with 44 developer utilities you can use directly from Claude Desktop, Cursor, or any MCP client. After months of using it daily, here are the 10 tools I reach for most — and what they replaced in my workflow. The Setup (30 seconds) npm install -g mcp-devutils Add to your Claude Desktop config ( claude_desktop_config.json ): { "mcpServers" : { "devutils" : { "command" : "mcp-devutils" } } } That's it. 15 tools are free immediately. The other 29 unlock with a $5 Pro key . Free Tools I Use Every Day 1. UUID Generator Instead of opening a browser tab to generate UUIDs, I just ask Claude: "Generate 5 UUIDs" . Done. 2. JWT Decode Paste a JWT token into the chat, ask Claude to decode it. No more jwt.io tabs. It shows header, payload, and expiry — instantly. 3. Hash & HMAC Need a SHA-256 hash of a string? HMAC for an API signature? Just ask. Supports MD5, SHA-1, SHA-256, SHA-512. 4. Base64 Encode/Decode I encode/decode base64 strings multiple times a day