save_schematic · KiCAD Schematic Manipulation MCP Server MCP

WHAT IT DOES

What save_schematic does on KiCAD Schematic Manipulation MCP Server

AI agents use save_schematic to create or update resources in KiCAD Schematic Manipulation MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your KiCAD Schematic Manipulation MCP Server environment.

WHY IT NEEDS A POLICY

Why save_schematic needs a policy

This tool performs a reversible write operation—it saves schematic modifications to a file. While the save itself cannot be easily undone without version control, the operation is Write rather than Destructive because: (1) it does not irreversibly delete data, (2) the file can be restored from backups or version control, and (3) the severity is medium rather than high because the blast radius is limited to a single…

From the tool's definition The tool description states 'Save the current schematic to a file', which modifies persistent storage by writing schematic data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

save_schematic Rate-limited

save_schematic 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "save_schematic": {
      "limits": [
        {
          "counter": "save_schematic_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches KiCAD Schematic Manipulation MCP Server, so you can run agents against it safely.

FAQ

Questions about save_schematic

What does the save_schematic tool do? +

Save the current schematic to a file. It is categorised as a Write tool in the KiCAD Schematic Manipulation MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on save_schematic? +

Register the KiCAD Schematic Manipulation MCP Server MCP server in PolicyLayer and add a rule for save_schematic: 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 Schematic Manipulation MCP Server. Nothing to install.

What risk level is save_schematic? +

save_schematic is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit save_schematic? +

Yes. Add a rate_limit block to the save_schematic 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.

How do I block save_schematic completely? +

Set action: deny in the PolicyLayer policy for save_schematic. 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.

What MCP server provides save_schematic? +

save_schematic is provided by the KiCAD Schematic Manipulation MCP Server MCP server (richard-luc/kicad-schematic-manipulation). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.