Find all wires that cross over component symbol bodies. Wires passing over symbols are unacceptable in schematics — they indicate routing mistakes where a wire was drawn across a component instead of around it.
AI agents call find_wires_crossing_symbols to retrieve information from KiCAD-MCP-Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and reports information about wire routing issues without creating, modifying, deleting, or executing any operations. It is a passive analysis/inspection tool that returns data about the current state of the schematic, making it a Read operation with low risk since misuse cannot cause unintended data loss or unwanted side effects.
From the tool's definition Tool description states it 'Find[s] all wires that cross over component symbol bodies' — a query/search operation with no modification of the schematic.
Documented attack patterns abuse exactly the kind of access find_wires_crossing_symbols gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and KiCAD-MCP-Server, and nothing reaches the server without passing your rules. This is the rule we recommend for find_wires_crossing_symbols:
{
"version": "1",
"default": "deny",
"tools": {
"find_wires_crossing_symbols": {}
}
}find_wires_crossing_symbols is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Find all wires that cross over component symbol bodies. Wires passing over symbols are unacceptable in schematics — they indicate routing mistakes where a wire was drawn across a component instead of around it. It is categorised as a Read tool in the KiCAD-MCP-Server MCP Server, which means it retrieves data without modifying state.
Register the KiCAD-MCP-Server MCP server in PolicyLayer and add a rule for find_wires_crossing_symbols: 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 KiCAD-MCP-Server. Nothing to install.
find_wires_crossing_symbols 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 find_wires_crossing_symbols 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 find_wires_crossing_symbols. 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.
find_wires_crossing_symbols is provided by the KiCAD-MCP-Server MCP server (mixelpixx/kicad-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from KiCAD-MCP-Server, 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.
157 KiCAD-MCP-Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.