Render a plot image using a built-in deterministic preset.
AI agents call renderLtspicePlotPresetImage to retrieve information from Ltspice without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool generates visual output from existing simulation results using a fixed preset configuration. It does not create, modify, execute, delete, or move data—it only reads and presents existing results. The deterministic nature and preset parameters mean there are no side effects or unpredictable operations. This is clearly a Read operation with low blast radius.
From the tool's definition The tool renders a plot image using a built-in preset. The verb 'render' and the phrase 'built-in deterministic preset' indicate it retrieves and displays data (a visualization) without modifying circuit state, data, or triggering simulations with variable…
Documented attack patterns abuse exactly the kind of access renderLtspicePlotPresetImage 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 renderLtspicePlotPresetImage:
{
"version": "1",
"default": "deny",
"tools": {
"renderLtspicePlotPresetImage": {}
}
}renderLtspicePlotPresetImage is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Render a plot image using a built-in deterministic preset. It is categorised as a Read tool in the Ltspice MCP Server, which means it retrieves data without modifying state.
Register the Ltspice MCP server in PolicyLayer and add a rule for renderLtspicePlotPresetImage: 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.
renderLtspicePlotPresetImage is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the renderLtspicePlotPresetImage 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 renderLtspicePlotPresetImage. 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.
renderLtspicePlotPresetImage 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.