Draw a line in the active sketch. AUTOMATIC: This tool automatically ensures an active sketch context before drawing. If no sketch is active, it will activate the most recent sketch or create one if needed. Coordinates are in mm. The line can be created as construction geometry if needed.
AI agents use sketch_line 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.
This tool creates geometry (a line) within a SolidWorks sketch, which is a reversible write/create operation. It may also automatically create a new sketch context if none exists. No code execution, deletion, or financial transaction is involved. Misuse could corrupt a design file but the action is reversible (lines can be deleted), placing it in the Write category at medium severity.
From the tool's definition Draw a line in the active sketch. Coordinates are in mm. The line can be created as construction geometry if needed.
Documented attack patterns abuse exactly the kind of access sketch_line 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_line:
{
"version": "1",
"default": "deny",
"tools": {
"sketch_line": {
"limits": [
{
"counter": "sketch_line_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}sketch_line 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 line in the active sketch. AUTOMATIC: This tool automatically ensures an active sketch context before drawing. If no sketch is active, it will activate the most recent sketch or create one if needed. Coordinates are in mm. The line can be created as construction geometry if needed. 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_line: 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_line 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_line 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_line. 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_line 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.