Open LTspice UI on a selected artifact.
AI agents invoke openLtspiceUi to trigger actions in Ltspice. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Opening the LTspice UI triggers an external application launch, which is an external operation beyond simple data retrieval or writing. It interacts with the OS to start or bring up a GUI application, making it an Execute-category action. The blast radius is medium since it opens a UI but doesn't directly modify or delete data.
From the tool's definition Open LTspice UI on a selected artifact
Documented attack patterns abuse exactly the kind of access openLtspiceUi gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ltspice, and nothing reaches the server without passing your rules. This is the rule we recommend for openLtspiceUi:
{
"version": "1",
"default": "deny",
"tools": {
"openLtspiceUi": {
"limits": [
{
"counter": "openltspiceui_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}openLtspiceUi stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Open LTspice UI on a selected artifact. It is categorised as a Execute tool in the Ltspice MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Ltspice MCP server in PolicyLayer and add a rule for openLtspiceUi: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Ltspice. Nothing to install.
openLtspiceUi is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the openLtspiceUi rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for openLtspiceUi. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
openLtspiceUi is provided by the Ltspice MCP server (xuio/ltspice-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Ltspice, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
71 Ltspice tools catalogued and risk-classified — across an index of 43,000+ MCP servers.