Auto-clean schematic layout and return before/after quality analysis.
AI agents use autoCleanSchematicLayout to create or update resources in Ltspice — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ltspice environment.
This tool modifies an existing schematic by automatically cleaning/reorganizing its layout. This is a reversible modification (Write) to schematic data. The before/after analysis suggests it transforms existing content. Severity is medium as it could alter schematic structure in unintended ways, potentially disrupting work, but changes are likely recoverable.
From the tool's definition Auto-clean schematic layout and return before/after quality analysis
Documented attack patterns abuse exactly the kind of access autoCleanSchematicLayout 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 autoCleanSchematicLayout:
{
"version": "1",
"default": "deny",
"tools": {
"autoCleanSchematicLayout": {
"limits": [
{
"counter": "autocleanschematiclayout_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}autoCleanSchematicLayout stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Auto-clean schematic layout and return before/after quality analysis. It is categorised as a Write tool in the Ltspice MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ltspice MCP server in PolicyLayer and add a rule for autoCleanSchematicLayout: 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.
autoCleanSchematicLayout is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the autoCleanSchematicLayout 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 autoCleanSchematicLayout. 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.
autoCleanSchematicLayout 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.
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