Calculate the recommended wire gauge / cable cross-section for a DC circuit. Considers both ampacity (current carrying capacity) and voltage drop to recommend the optimal cable size. Also returns total resistance, power loss, and a fuse recommendation. Supports copper conductors from 0.75 mm² (18...
Part of the Wiring Diagram server.
Free to start. No card required.
AI agents may call calculate_wire_gauge to permanently remove or destroy resources in Wiring Diagram. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.
Without a policy, an AI agent could call calculate_wire_gauge in a loop, permanently destroying resources in Wiring Diagram. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.
Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.
{
"version": "1",
"default": "deny",
"hide": [
"calculate_wire_gauge"
]
}See the full Wiring Diagram policy for all 9 tools.
These attack patterns abuse exactly the kind of access calculate_wire_gauge gives an agent. Each links to the full case and the policy that stops it:
Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.
Calculate the recommended wire gauge / cable cross-section for a DC circuit. Considers both ampacity (current carrying capacity) and voltage drop to recommend the optimal cable size. Also returns total resistance, power loss, and a fuse recommendation. Supports copper conductors from 0.75 mm² (18 AWG) to 240 mm² (300 MCM).. It is categorised as a Destructive tool in the Wiring Diagram MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Wiring Diagram MCP server in PolicyLayer and add a rule for calculate_wire_gauge: 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 Wiring Diagram. Nothing to install.
calculate_wire_gauge is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the calculate_wire_gauge 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 calculate_wire_gauge. 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.
calculate_wire_gauge is provided by the Wiring Diagram MCP server (https://mcp.voltplan.app/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 9 Wiring Diagram tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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