UGS-MCP (zackpeters93/ugs-mcp) is an MCP server listed on the M8ven Trust Index. It scores 69 out of 100, grade C. It declares 19 tools. No publisher has claimed this listing.

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C
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69/100
1 month ago

UGS-MCP

MCP server for controlling CNC machines via Universal GCode Sender. Lets Claude (or any MCP-compatible AI assistant) connect to a CNC machine, inspect G-code, and issue motion commands — all through the UGS Pendant REST API.

→ zackpeters93/ugs-mcp· listed on glama

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Limited view: static analysis for Python is partially covered.

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Who stands behind it

zackpeters93

Source: Glama

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Install from

Glamanot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
✅
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.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configUGS_HOSTlocalhost UGS Pendant host
configUGS_PORT8080 UGS Pendant port
configMACROS_DIRugs_mcp/macros/ Directory for saved G-code macros
configRAPID_SPEED_MM_MIN5000 Rapid speed used in return-to-zero
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

19/19 tools missing one or more hints — ugs_connect (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); ugs_disconnect (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); ugs_troubleshoot_connection (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +16 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tool inputs are validated

13/19 tool handlers declare input schemas (68%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tool handlers catch errors

Only 0/19 tool handlers wrap calls in try/catch (0%)

Wrap each tool handler body in try/catch and return a structured error response.

Tests exist

No test files found

Add tests that exercise each declared tool.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 5 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/zackpeters93/ugs-mcp)](https://m8ven.ai/mcp/zackpeters93/ugs-mcp)
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commit: ec3f4425c8406078c2ca5d1492a956cea355a182
code hash: 7152f5ce862d7f12bc9286db217803289b17640f9eb0c84c288d3a9e29014db7
verified: 8/6/2026, 1:22:09 PM
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