save_board

Save the current PCB board. Refuses to overwrite external disk edits unless force=true.

SERVERKiCAD-MCP-Server SOURCEmixelpixx/kicad-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/mixelpixx-kicad-mcp-server/save-board.md

WHAT IT DOES

What save_board does on KiCAD-MCP-Server

AI agents use save_board 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.

RISK

Why save_board is rated Medium

This tool creates or modifies PCB board files. While the operation is reversible (boards can be edited again or reverted from version control), it persistently changes stored design data. The high severity reflects that an AI agent could corrupt an entire PCB design, requiring significant rework. Not Destructive because saves are reversible and don't permanently delete data.

From the tool's definition Tool name 'save_board' and description 'Save the current PCB board' indicate the tool writes/modifies PCB board data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs save_board 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 save_board, this is the rule to start with:

save_board Rate-limited

save_board 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_board": {
      "limits": [
        {
          "counter": "save_board_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect KiCAD-MCP-Server, apply this rule, and every save_board call is checked against it from then on.

FAQ

Questions about save_board

What does the save_board tool do? +

Save the current PCB board. Refuses to overwrite external disk edits unless force=true. 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.

How do I enforce a policy on save_board? +

Register the KiCAD-MCP-Server MCP server in PolicyLayer and add a rule for save_board: 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.

What risk level is save_board? +

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

Can I rate-limit save_board? +

Yes. Add a rate_limit block to the save_board 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_board completely? +

Set action: deny in the PolicyLayer policy for save_board. 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_board? +

save_board 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.

KEEP EXPLORING

More on KiCAD-MCP-Server, and thousands of servers like it.

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save_snapshot on Why Did You Render → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →