kastell MCP Server

What this does

kastell exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.

Requirements

This server needs the following environment variables to be set before it can run:

HETZNER_TOKEN
DIGITALOCEAN_TOKEN
VULTR_TOKEN
LINODE_TOKEN

Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).

How do I install kastell?

Run the Claude Code command in the install section to add kastell to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.

Which clients work with kastell?

This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to kastell as well.

Does kastell need an API key?

Yes. Before it can run, set these environment variables: HETZNER_TOKEN, DIGITALOCEAN_TOKEN, VULTR_TOKEN, LINODE_TOKEN. They go in the env block of your MCP config.

What license is kastell under?

kastell is listed under the Apache-2.0 license.