find_wires_crossing_symbols
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.
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What find_wires_crossing_symbols does on KiCAD-MCP-Server
AI agents call find_wires_crossing_symbols to retrieve information from KiCAD-MCP-Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why find_wires_crossing_symbols is rated Low
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.
Attacks that exploit this kind of access
The rule that runs find_wires_crossing_symbols safely
PolicyLayer is an MCP gateway: it sits between your AI agents and KiCAD-MCP-Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For find_wires_crossing_symbols, this is the rule to start with:
find_wires_crossing_symbols is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect KiCAD-MCP-Server, apply this rule, and every find_wires_crossing_symbols call is checked against it from then on.
Questions about find_wires_crossing_symbols
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.
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