create_footprint
Create a new KiCAD footprint (.kicad_mod) inside a .pretty library directory.
This record as markdown: /tools/mixelpixx-kicad-mcp-server/create-footprint.md
What create_footprint does on KiCAD-MCP-Server
AI agents use create_footprint 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 create_footprint is rated Medium
This tool creates new footprint files in a KiCAD library, which is a reversible write operation. A library footprint can be deleted or replaced if needed. While it modifies the project/library state, it is not destructive (irreversible deletion), does not execute arbitrary code, and does not involve financial operations.
From the tool's definition Tool description states 'Create a new KiCAD footprint (.kicad_mod) inside a .pretty library directory' - the verb 'Create' and action of writing a new file to a library directory indicates data creation.
Attacks that exploit this kind of access
The rule that runs create_footprint 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 create_footprint, this is the rule to start with:
create_footprint 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 create_footprint call is checked against it from then on.
Questions about create_footprint
Create a new KiCAD footprint (.kicad_mod) inside a .pretty library directory. 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 create_footprint: 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.
create_footprint 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 create_footprint 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 create_footprint. 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.
create_footprint 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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