# io.github.kastelldev/kastell

> Use this tool when you need to strengthen server security across multiple cloud providers, as it performs 413 checks for auditing and hardening, and enables fleet management. It solves problems related to server vulnerabilities and misconfigurations, providing a comprehensive security solution. Ideal for use in cloud-based infrastructure, it takes in server configurations and outputs detailed audit reports and hardening recommendations.

Canonical page: https://skillsregistry.net/skills/io-github-kastelldev-kastell  
JSON: https://api.skillsregistry.net/v1/skills/io-github-kastelldev-kastell

## Description

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

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** unverified

## Facts

- **Version:** 1.14.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** security
- **Updated:** 2026-04-17

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.github.kastelldev%2Fkastell)
- **Repository:** <https://github.com/kastelldev/kastell>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "io-github-kastelldev-kastell"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/io-github-kastelldev-kastell` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/io-github-kastelldev-kastell/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt