export_sch_hpgl
Export a schematic to HPGL via kicad-cli (
This record as markdown: /tools/mixelpixx-kicad-mcp-server/export-sch-hpgl.md
What export_sch_hpgl does on KiCAD-MCP-Server
AI agents use export_sch_hpgl to create or update resources in KiCAD-MCP-Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your KiCAD-MCP-Server environment.
Why export_sch_hpgl is rated Medium
Export operations are Write-category actions: they generate and store output data (an HPGL file) based on the input schematic. This is reversible—the exported file can be deleted or re-exported. The operation does not delete or modify the original schematic data, nor does it execute arbitrary code or move financial resources.
From the tool's definition Tool name 'export_sch_hpgl' and description 'Export a schematic to HPGL via kicad-cli' indicate the tool writes/outputs schematic data in HPGL format. The export operation creates a new file artifact.
Attacks that exploit this kind of access
The rule that runs export_sch_hpgl 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 export_sch_hpgl, this is the rule to start with:
export_sch_hpgl 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.
The button opens the PolicyLayer dashboard: create your workspace, connect KiCAD-MCP-Server, apply this rule, and every export_sch_hpgl call is checked against it from then on.
Questions about export_sch_hpgl
Export a schematic to HPGL via kicad-cli (. It is categorised as a Write tool in the KiCAD-MCP-Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the KiCAD-MCP-Server MCP server in PolicyLayer and add a rule for export_sch_hpgl: 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.
export_sch_hpgl 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 export_sch_hpgl 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 export_sch_hpgl. 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.
export_sch_hpgl 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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