Draw a centerline in the active sketch. AUTOMATIC: This tool automatically ensures an active sketch context before drawing. Centerlines are typically used for mirroring or as construction geometry.
AI agents use sketch_centerline to create or update resources in SolidWorks MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SolidWorks MCP Server environment.
Drawing centerlines in CAD sketches creates new geometry objects that persist in the model. While the action is reversible (unlike Destructive), it modifies the design state. The severity is medium because misuse could add unwanted geometry to technical drawings or sketches, requiring cleanup but not causing data loss or irreversible harm.
From the tool's definition Tool name 'sketch_centerline' and description 'Draw a centerline in the active sketch' indicates creation of sketch geometry. This is a Write operation as it creates new geometric elements that modify the sketch but can be reversed (deleted).
Documented attack patterns abuse exactly the kind of access sketch_centerline gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SolidWorks MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for sketch_centerline:
{
"version": "1",
"default": "deny",
"tools": {
"sketch_centerline": {
"limits": [
{
"counter": "sketch_centerline_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}sketch_centerline stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Draw a centerline in the active sketch. AUTOMATIC: This tool automatically ensures an active sketch context before drawing. Centerlines are typically used for mirroring or as construction geometry. It is categorised as a Write tool in the SolidWorks MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the SolidWorks MCP Server MCP server in PolicyLayer and add a rule for sketch_centerline: 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 SolidWorks MCP Server. Nothing to install.
sketch_centerline 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 sketch_centerline 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 sketch_centerline. 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.
sketch_centerline is provided by the SolidWorks MCP Server MCP server (jianzhichun/solidworks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from SolidWorks 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.
84 SolidWorks MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.