# add_zone

Create a copper fill zone (pour) on a PCB layer for a specified net.

Agent View of the PolicyLayer registry record for `add_zone`. HTML page: https://policylayer.com/tools/mixelpixx-kicad-mcp-server/add-zone

## Facts

- Tool: `add_zone`
- Server: KiCAD-MCP-Server (`mixelpixx/kicad-mcp-server`) — https://policylayer.com/tools/mixelpixx-kicad-mcp-server.md
- Homepage: https://github.com/mixelpixx/KiCAD-MCP-Server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "add_zone",
    "arguments": {}
  }
}
```

## Why add_zone is rated Medium

This tool creates new PCB design elements (copper pour zones) which are reversible modifications to circuit board data. It does not execute arbitrary commands, delete data irreversibly, or move financial resources. While it modifies the design, these changes can be undone in KiCAD.

From the tool's own definition: "The tool 'Create a copper fill zone (pour) on a PCB layer' performs a create operation that modifies PCB design data. The verb 'Create' and the action of adding a copper pour zone indicates a reversible modification to the circuit board design."

## Use case

AI agents use add_zone 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches KiCAD-MCP-Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_zone": {
      "limits": [
        {
          "counter": "add_zone_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on KiCAD-MCP-Server (230)

- `clear_board_outline` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/clear-board-outline.md
- `delete_component` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/delete-component.md
- `delete_graphic` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/delete-graphic.md
- `delete_schematic_component` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/delete-schematic-component.md
- `delete_schematic_net_label` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/delete-schematic-net-label.md
- `delete_schematic_wire` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/delete-schematic-wire.md
- `delete_symbol` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/delete-symbol.md
- `delete_trace` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/delete-trace.md
- `discard_or_reload` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/discard-or-reload.md
- `remove_hierarchical_sheet` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/remove-hierarchical-sheet.md
- `remove_library_table_entry` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/remove-library-table-entry.md
- `remove_schematic_component_property` — Destructive — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/remove-schematic-component-property.md
- `autoroute` — Execute — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/autoroute.md
- `export_3d_cli` — Execute — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/export-3d-cli.md
- `export_drill` — Execute — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/export-drill.md
- `launch_kicad_ui` — Execute — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/launch-kicad-ui.md
- `refill_zones` — Execute — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/refill-zones.md
- `run_drc` — Execute — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/run-drc.md
- `run_erc` — Execute — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/run-erc.md
- `batch_list_symbol_pins` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/batch-list-symbol-pins.md
- `check_clearance` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/check-clearance.md
- `check_courtyard_overlaps` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/check-courtyard-overlaps.md
- `check_freerouting` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/check-freerouting.md
- `check_kicad_ui` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/check-kicad-ui.md
- `check_placement_clearance` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/check-placement-clearance.md
- `download_registry_part` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/download-registry-part.md
- `estimate_airwire_lengths` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/estimate-airwire-lengths.md
- `export_bom` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/export-bom.md
- `export_ipc2581` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/export-ipc2581.md
- `export_ipcd356` — Read — https://policylayer.com/tools/mixelpixx-kicad-mcp-server/export-ipcd356.md
- …and 200 more: https://policylayer.com/tools/mixelpixx-kicad-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=mixelpixx-kicad-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mixelpixx-kicad-mcp-server