Authentik MCP Server vs Kastell

In-depth architectural comparison of the Authentik MCP Server and Kastell MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Authentik MCP Server when:

• You need dedicated capabilities in the Security domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• You have access to required keys: AUTHENTIK_URL, AUTHENTIK_TOKEN.
• Primary tools included: authentik_admin_system_info, authentik_admin_version, authentik_admin_settings_get.

Explore Authentik MCP Server Details

Choose Kastell when:

• You need dedicated capabilities in the Security domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Server security audits with remediation, SSH hardening and fail2ban setup, UFW firewall management.

Feature & Specification Comparison

Specification	Authentik MCP Server Security	Kastell kastelldev Security
Summary
Category & Scope	Security	Security
Quality signal

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "authentik-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@samik081/mcp-authentik"
      ],
      "env": {
        "AUTHENTIK_URL": "YOUR_AUTHENTIK_URL_HERE",
        "AUTHENTIK_TOKEN": "YOUR_AUTHENTIK_TOKEN_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "kastelldev-kastell": {
      "command": "npx",
      "args": [
        "-y",
        "kastell"
      ]
    }
  }
}

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