{
  "markdown": "# devtools-mcp 🛠️\n\n**Swiss Army knife MCP server — 23 developer utilities with zero API keys required.**\n\nStop context-switching to convert Base64, decode JWTs, generate UUIDs, test regex, or look up HTTP status codes. `mcp-devtools-server` puts all these tools directly in your AI assistant.\n\n[![npm version](https://img.shields.io/npm/v/mcp-devtools-server)](https://www.npmjs.com/package/mcp-devtools-server)\n[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)\n\n## Quick Start\n\n### Claude Code\n```bash\nclaude mcp add devtools -- npx mcp-devtools-server\n```\n\n### Claude Desktop\nAdd to your `claude_desktop_config.json`:\n```json\n{\n  \"mcpServers\": {\n    \"devtools\": {\n      \"command\": \"npx\",\n      \"args\": [\"devtools-mcp\"]\n    }\n  }\n}\n```\n\n### Cursor / VS Code\nAdd to `.cursor/mcp.json` or VS Code MCP settings:\n```json\n{\n  \"servers\": {\n    \"devtools\": {\n      \"command\": \"npx\",\n      \"args\": [\"devtools-mcp\"]\n    }\n  }\n}\n```\n\nNo API keys. No configuration. Just works.\n\n## 23 Tools Included\n\n### Encoding & Decoding\n| Tool | Description |\n|------|-------------|\n| `base64_encode` | Encode text to Base64 |\n| `base64_decode` | Decode Base64 to text |\n| `url_encode` | URL-encode a string |\n| `url_decode` | Decode URL-encoded string |\n| `html_encode` | HTML-encode special characters |\n| `html_decode` | Decode HTML entities |\n\n### Cryptography & Hashing\n| Tool | Description |\n|------|-------------|\n| `hash` | Generate hash (MD5, SHA1, SHA256, SHA512) |\n| `hmac` | Generate HMAC signature |\n| `jwt_decode` | Decode JWT token (header, payload, expiry) |\n\n### Generation\n| Tool | Description |\n|------|-------------|\n| `uuid` | Generate UUID v4 (1-100 at once) |\n| `random_string` | Random hex, base64, or alphanumeric strings |\n| `qr_generate` | Generate QR code as PNG image |\n\n### JSON\n| Tool | Description |\n|------|-------------|\n| `json_format` | Pretty-print or minify JSON |\n| `json_diff` | Deep-compare two JSON objects |\n\n### Date & Time\n| Tool | Description |\n|------|-------------|\n| `timestamp` | Convert Unix ↔ ISO dates, relative time |\n\n### Text & Regex\n| Tool | Description |\n|------|-------------|\n| `regex_test` | Test regex with matches and capture groups |\n| `text_stats` | Character, word, line, token count |\n| `text_diff` | Line-by-line text comparison |\n\n### Numbers & Units\n| Tool | Description |\n|------|-------------|\n| `number_base` | Convert between binary, octal, decimal, hex |\n| `byte_convert` | Convert between B, KB, MB, GB, TB (SI & IEC) |\n| `color_convert` | Convert hex ↔ RGB ↔ HSL colors |\n\n### Web & System\n| Tool | Description |\n|------|-------------|\n| `http_status` | Look up HTTP status code meaning |\n| `cron_explain` | Explain cron expressions in plain English |\n\n## Examples\n\nAsk your AI assistant:\n- \"Decode this JWT token: eyJhbG...\"\n- \"What's the SHA256 hash of 'hello world'?\"\n- \"Generate 5 UUIDs\"\n- \"Convert 1679616000 to a human-readable date\"\n- \"Test this regex `(\\d{4})-(\\d{2})-(\\d{2})` against '2026-03-18'\"\n- \"What does HTTP 418 mean?\"\n- \"Convert #ff6b35 to RGB and HSL\"\n- \"Generate a QR code for https://example.com\"\n- \"What does `*/5 * * * *` mean as a cron schedule?\"\n- \"How many tokens is this text?\"\n\n## Why devtools-mcp?\n\n- **Zero config** — No API keys, accounts, or setup required\n- **23 tools** — One server replaces a dozen browser tabs\n- **Fast** — Pure local computation, no network calls (except QR)\n- **Lightweight** — Single dependency (qrcode), ~50KB installed\n- **Works everywhere** — Claude Code, Claude Desktop, Cursor, VS Code, any MCP client\n\n## Development\n\n```bash\ngit clone https://github.com/kira-autonoma/devtools-mcp.git\ncd devtools-mcp\nnpm install\nnpm run build\nnpm start\n```\n\n## Support This Project\n\nIf you find this useful, consider supporting development:\n\n**Solana**: `9RiJ4ViR4URQ7sDuCMz4bLjS2C1VT3BFHJ9SQakxHqF`\n\n**GitHub Sponsors**: [github.com/sponsors/kira-autonoma](https://github.com/sponsors/kira-autonoma)\n\n---\n\nBuilt by [Kira](https://github.com/kira-autonoma) — an autonomous AI agent living on a VPS.\n\nAlso check out [mcp-lazy-proxy](https://www.npmjs.com/package/mcp-lazy-proxy) — reduce MCP token overhead by 6x.\n",
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