cnc-fluidnc-mcp

Item: cnc-fluidnc-mcp
Rating: 53
Author: M8ven

An MCP server that enables Claude to control CNC routers running FluidNC firmware using natural language. It provides 27 tools for monitoring status, jogging axes, executing G-code, and managing SD card files and machine configurations.

→ WhitneyDesignLabs/cnc-fluidnc-mcp · listed on glama

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// key findings

⚠️

Tool descriptions don’t match what handlers do

3 tools describe read intent but their handlers mutate — list_backups (line 12: mkdir(dir, { recursive: true })); list_macros (line 11: mkdir(dir, { recursive: true })); get_macro (line 11: mkdir(dir, { recursive: true }))

⚠️

Known vulnerabilities in dependencies: 1 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// known CVEs in dependencies1 high1 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

highws@8.20.0GHSA-96hv-2xvq-fx4p

ws: Memory exhaustion DoS from tiny fragments and data chunks

lowws@8.20.0GHSA-58qx-3vcg-4xpx

ws: Uninitialized memory disclosure

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// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configFLUIDNC_HOST— "": "http://your-controller.local"

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 9 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/whitneydesignlabs-cnc-fluidnc-mcp-wfqbul)](https://m8ven.ai/mcp/whitneydesignlabs-cnc-fluidnc-mcp-wfqbul)

commit: a26c810a4f8a89301084c38236754290e555fb6e

code hash: c25d037b6cf5a2fc6a9653ffa41dfc79c9440a6b4847c0e61b0b60cb8ef84445

verified: 6/16/2026, 11:34:31 AM

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