Return tail text from the active daemon log file.
AI agents call tailDaemonLog 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 only retrieves and returns existing log file content (tail operation). It has no side effects, does not modify data, does not execute commands, and does not delete anything. It is a simple read operation used for monitoring or debugging the daemon process.
From the tool's definition Tool name 'tailDaemonLog' and description 'Return tail text from the active daemon log file' indicate reading/retrieving log data with no modification or execution.
Documented attack patterns abuse exactly the kind of access tailDaemonLog 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 tailDaemonLog:
{
"version": "1",
"default": "deny",
"tools": {
"tailDaemonLog": {}
}
}tailDaemonLog is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Return tail text from the active daemon log file. 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 tailDaemonLog: 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.
tailDaemonLog 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 tailDaemonLog 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 tailDaemonLog. 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.
tailDaemonLog 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.