# create_datum_point

A write tool on the FreeCAD Robust MCP Server MCP server.

Agent View of the PolicyLayer registry record for `create_datum_point`. HTML page: https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/create-datum-point

## Facts

- Tool: `create_datum_point`
- Server: FreeCAD Robust MCP Server (`spkane/freecad-addon-robust-mcp-server`) — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server.md
- Homepage: https://github.com/spkane/freecad-addon-robust-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": "create_datum_point",
    "arguments": {}
  }
}
```

## Why create_datum_point is rated Medium

The tool creates a new datum point object in FreeCAD, a reversible data modification operation typical of CAD modeling. This falls under Write rather than Execute because it modifies the model state without running arbitrary code. Severity is medium because misuse could create unwanted geometry requiring manual cleanup, but the effects are fully reversible and limited to the current design document.

From the tool's own definition: "Tool name 'create_datum_point' indicates creation of a geometric datum object in FreeCAD; description is empty but context from sibling tools (add_sketch_arc, add_sketch_circle, etc.) all perform geometric creation/modification operations."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on FreeCAD Robust MCP Server (151)

- `close_document` — Destructive — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/close-document.md
- `delete_macro` — Destructive — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/delete-macro.md
- `delete_object` — Destructive — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/delete-object.md
- `delete_sketch_constraint` — Destructive — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/delete-sketch-constraint.md
- `delete_sketch_geometry` — Destructive — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/delete-sketch-geometry.md
- `spreadsheet_clear_cell` — Destructive — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/spreadsheet-clear-cell.md
- `activate_workbench` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/activate-workbench.md
- `boolean_operation` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/boolean-operation.md
- `draft_extrude_shapestring` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/draft-extrude-shapestring.md
- `execute_python` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/execute-python.md
- `explode_compound` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/explode-compound.md
- `part_sweep` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/part-sweep.md
- `recompute` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/recompute.md
- `recompute_document` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/recompute-document.md
- `revolution_sketch` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/revolution-sketch.md
- `run_macro` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/run-macro.md
- `safe_execute` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/safe-execute.md
- `scale_object` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/scale-object.md
- `set_camera_position` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/set-camera-position.md
- `shell_object` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/shell-object.md
- `slice_shape` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/slice-shape.md
- `subtractive_loft` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/subtractive-loft.md
- `subtractive_pipe` — Execute — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/subtractive-pipe.md
- `common_all` — Other — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/common-all.md
- `draft_feature` — Other — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/draft-feature.md
- `draft_shapestring_to_face` — Other — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/draft-shapestring-to-face.md
- `draft_text_on_surface` — Other — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/draft-text-on-surface.md
- `section_shape` — Other — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/section-shape.md
- `set_display_mode` — Other — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/set-display-mode.md
- `set_view_angle` — Other — https://policylayer.com/tools/spkane-freecad-addon-robust-mcp-server/set-view-angle.md
- …and 121 more: https://policylayer.com/tools/spkane-freecad-addon-robust-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=spkane-freecad-addon-robust-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/spkane-freecad-addon-robust-mcp-server