Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add brs077/CNC-design-control-MCP --skill cnc-connectgit clone --depth 1 https://github.com/brs077/CNC-design-control-MCPWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/brs077/cnc-design-control-mcp/cnc-connect)<a href="https://agentmods.dev/skills/brs077/cnc-design-control-mcp/cnc-connect"><img src="https://agentmods.dev/badge/skills/brs077/cnc-design-control-mcp/cnc-connect/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/brs077/cnc-design-control-mcp/cnc-connect"><img src="https://agentmods.dev/badge/skills/brs077/cnc-design-control-mcp/cnc-connect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00034 | $0.00267 |
| Opus 5 | $0.00017 | $0.00133 |
| Sonnet 5 | $0.00007 | $0.00053 |
| Haiku 4.5 | $0.00003 | $0.00027 |
Grade A, and why
cnc-connect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
CNC Connection Management
Help the user connect to their CNC machine through CNCjs.
Available MCP Tools
list_serial_ports— List available serial ports to find the CNC controllerconnect_to_port— Open a serial connection (port, baudrate, controllerType)disconnect_port— Close the current serial connectionget_connection_status— Check if connected to CNCjs and which serial port is active
Workflow
- First use
list_serial_portsto discover available ports - Use
connect_to_portwith the correct port path (e.g.,/dev/cu.usbmodem14201on macOS,COM3on Windows) - Default baudrate is 115200, default controller is Grbl
- Verify connection with
get_connection_status
Environment
- CNCjs server must be running (default:
http://localhost:8000) - Set
CNCJS_URLenvironment variable if CNCjs is on a different host/port - Set
CNCJS_TOKENfor authenticated CNCjs instances
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 29 lines · 34 tokens per session scan A 6aa2cc42c33b
cnc-connect is a skill published in the GitHub repository brs077/CNC-design-control-MCP (1 stars, last pushed 5mo ago), licensed MIT. It adds 34 tokens to every session and 267 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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