edit_component
Edit properties of an existing PCB component (reference, value, footprint).
This record as markdown: /tools/mixelpixx-kicad-mcp-server/edit-component.md
What edit_component does on KiCAD-MCP-Server
AI agents use edit_component 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 edit_component is rated Medium
The tool creates or modifies data (component properties) in a reversible manner. Changes to reference designators, values, and footprint assignments can be undone or corrected. This is characteristic of Write operations.
From the tool's definition Tool description states 'Edit properties of an existing PCB component (reference, value, footprint)' — this modifies component metadata reversibly without deleting or executing external operations.
Attacks that exploit this kind of access
The rule that runs edit_component 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 edit_component, this is the rule to start with:
edit_component 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 edit_component call is checked against it from then on.
Questions about edit_component
Edit properties of an existing PCB component (reference, value, footprint). 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 edit_component: 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.
edit_component 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 edit_component 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 edit_component. 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.
edit_component 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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