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-safetygit 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-safety)<a href="https://agentmods.dev/skills/brs077/cnc-design-control-mcp/cnc-safety"><img src="https://agentmods.dev/badge/skills/brs077/cnc-design-control-mcp/cnc-safety/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-safety"><img src="https://agentmods.dev/badge/skills/brs077/cnc-design-control-mcp/cnc-safety.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 | $0.00040 | $0.00321 |
| Opus 5 | $0.00020 | $0.00161 |
| Sonnet 5 | $0.00008 | $0.00064 |
| Haiku 4.5 | $0.00004 | $0.00032 |
Grade A, and why
cnc-safety scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
CNC Safety Controls
Critical safety tools for stopping machine motion. Use these immediately when needed — do not hesitate.
Available MCP Tools
emergency_stop— EMERGENCY STOP — Immediately halts ALL motion via GRBL soft reset (0x18). Machine enters Alarm state. Use for any dangerous situation.feed_hold— Controlled deceleration to stop. Safer than emergency stop for non-critical pauses. Job can be resumed.jog_cancel— Cancel active jog motion only.
When to Use
| Situation | Tool | Effect |
|---|---|---|
| Collision / danger / fire / breakage | emergency_stop |
Instant halt, alarm state |
| Need to pause safely | feed_hold |
Controlled decel, resumable |
| Wrong jog direction | jog_cancel |
Stops jog only |
After Emergency Stop
- Machine is in Alarm state
- Use
unlock_machine($X) to clear the alarm - Or use
home_machine($H) to re-home - Check machine position and workpiece before continuing
Important
- Emergency stop is ALWAYS available when a port is connected
- Never delay calling emergency_stop if there is any danger
- Feed hold preserves position; emergency stop may lose position tracking
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.
- 12d ago First seen · 36 lines · 40 tokens per session scan A e90f8a0b9b40
cnc-safety is a skill published in the GitHub repository brs077/CNC-design-control-MCP (1 stars, last pushed 5mo ago), licensed MIT. It adds 40 tokens to every session and 321 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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