How do I install Kiln?

Kiln is a local plugin. Install it using PyPI package: kiln3d and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Kiln was flagged by MCP Marketplace's security scan, scoring 4.2/10 (high risk). It has 6 high or critical findings to review. Review the security report on this page carefully before installing it.

What credentials does Kiln need?

Kiln requires the following credentials or environment variables: KILN_PRINTER_HOST, KILN_PRINTER_API_KEY, KILN_PRINTER_TYPE. You can find setup instructions on the server detail page.

What AI apps work with Kiln?

Kiln uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Kiln MCP Server

by Codeofaxel

Developer ToolsUse Caution4.2MCP RegistryLocal

Free

Server data from the Official MCP Registry

Kiln MCP server for agents: design, slice, print, monitor, and recover physical objects safely.

About

Kiln MCP server for agents: design, slice, print, monitor, and recover physical objects safely.

Security Report

4.2

Use Caution4.2High Risk

Kiln is a comprehensive MCP server for 3D printer control with generally sound architecture and appropriate security patterns. The codebase demonstrates good security practices including auth scoping, input validation, and safe credential handling. However, several moderate concerns exist: overly broad exception handling in critical paths, potential for credential exposure in logs, complex authentication fallback logic that could mask misconfigurations, and incomplete input validation in some slicing/generation workflows. Permissions align well with the stated purpose of multi-printer fleet management and model generation. Supply chain analysis found 17 known vulnerabilities in dependencies (0 critical, 6 high severity). Package verification found 1 issue.

4 files analyzed · 26 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

env_vars

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

network_mqtt

Check that this permission is expected for this type of plugin.

network_websocket

Check that this permission is expected for this type of plugin.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

File System Write

Writes or modifies files on your machine. Check that this is expected for the tool.

Shell Command Execution

Runs commands on your machine. Be cautious — only use if you trust this plugin.

process_spawn

Check that this permission is expected for this type of plugin.

system_info

Check that this permission is expected for this type of plugin.

clipboard

Check that this permission is expected for this type of plugin.

What You'll Need

Set these up before or after installing:

URL of your 3D printer (OctoPrint, Moonraker, Creality, or Prusa Link)Optional

Environment variable: KILN_PRINTER_HOST

API key for your printer's REST APIRequired

Environment variable: KILN_PRINTER_API_KEY

Printer type: octoprint, moonraker, creality, bambu, prusalink, elegoo, or serialOptional

Environment variable: KILN_PRINTER_TYPE

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-codeofaxel-kiln": {
      "env": {
        "KILN_PRINTER_HOST": "your-kiln-printer-host-here",
        "KILN_PRINTER_TYPE": "your-kiln-printer-type-here",
        "KILN_PRINTER_API_KEY": "your-kiln-printer-api-key-here"
      },
      "args": [
        "kiln3d"
      ],
      "command": "uvx"
    }
  }
}

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Kiln MCP Server

About

Security Report

Findings (26)Action required

Permissions Required

What You'll Need

How to Install

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