Kastell
Your infrastructure, fortified.
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Why Kastell?
Server security is fragmented. Lynis scans but doesn't fix. OpenSCAP is powerful but complex. Custom scripts work until they don't -- and nobody maintains them. Each tool has its own output format, its own update cycle, its own learning curve.
Kastell takes a different approach: one CLI that audits, fixes, hardens, and monitors. Scan your server, apply safe fixes, lock it down to production standards, and keep watching -- all with the same tool.
AI-native from day one. Kastell ships with a built-in MCP server, so Claude, Cursor, or any MCP-compatible AI agent can manage your servers directly. Go from a prompt to production hardening in seconds.
You don't need four separate tools to secure a server.
Quick Start
# Interactive mode -- no commands to memorize
npx kastellRunning kastell without any arguments launches an interactive search menu with a gradient ASCII banner and quick-start examples. Browse actions by emoji-categorized groups, type to filter results instantly, and configure options step by step -- no need to remember any command names or flags.






