kastell

local MCP server

Installation

Terminal

claude mcp add kastell -e HETZNER_TOKEN=... -e DIGITALOCEAN_TOKEN=... -e VULTR_TOKEN=... -e LINODE_TOKEN=... -- npx -y kastell

Run in your project folder. Add --scope user to use it everywhere.

Claude Desktop, Cursor & other clients

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "kastell": {
      "command": "npx",
      "args": [
        "-y",
        "kastell"
      ],
      "env": {
        "HETZNER_TOKEN": "...",
        "DIGITALOCEAN_TOKEN": "...",
        "VULTR_TOKEN": "...",
        "LINODE_TOKEN": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

Summary

Server security audit (413 checks), hardening, and fleet management across 4 cloud providers.

Questions

kastell is a local MCP server distributed as the npm package kastell.

Run: claude mcp add kastell -e HETZNER_TOKEN=... -e DIGITALOCEAN_TOKEN=... -e VULTR_TOKEN=... -e LINODE_TOKEN=... -- npx -y kastell

Run: codex mcp add kastell --env HETZNER_TOKEN=... --env DIGITALOCEAN_TOKEN=... --env VULTR_TOKEN=... --env LINODE_TOKEN=... -- npx -y kastell

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