Add a pin (port/terminal) to a schematic for hierarchical connections.
AI agents use virtuoso_add_pin to create or update resources in Virtuoso Schematic MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Virtuoso Schematic MCP environment.
This tool creates new pins in a Cadence Virtuoso schematic, which modifies the design structure reversibly. While pins are fundamental to circuit design, adding them incorrectly could corrupt or compromise a schematic (increasing severity beyond low), but the modification is not destructive or irreversible—pins can be removed or edited.
From the tool's definition Tool name 'virtuoso_add_pin' and description 'Add a pin (port/terminal) to a schematic' indicate creation/modification of schematic elements. The verb 'Add' and action of introducing new pins to a design are write operations.
Attacks that exploit this kind of access
Add a pin (port/terminal) to a schematic for hierarchical connections. It is categorised as a Write tool in the Virtuoso Schematic MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Virtuoso Schematic MCP server in PolicyLayer and add a rule for virtuoso_add_pin: 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 Virtuoso Schematic MCP. Nothing to install.
virtuoso_add_pin 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 virtuoso_add_pin 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 virtuoso_add_pin. 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.
virtuoso_add_pin is provided by the Virtuoso Schematic MCP server (michelebergo/virtuoso-schematic-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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