# modify_element

A write tool on the Revit MCP Server MCP server.

Agent View of the PolicyLayer registry record for `modify_element`. HTML page: https://policylayer.com/tools/demolinator-revit-mcp-server/modify-element

## Facts

- Tool: `modify_element`
- Server: Revit MCP Server (`demolinator/revit-mcp-server`) — https://policylayer.com/tools/demolinator-revit-mcp-server.md
- Homepage: https://github.com/Demolinator/revit-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": "modify_element",
    "arguments": {}
  }
}
```

## Why modify_element is rated Medium

The name 'modify_element' strongly implies updating or changing a Revit model element, which is a Write operation. In Revit, modifying elements changes the BIM model data. The description is empty, lowering confidence. Severity is high because modifying building model elements could have significant downstream consequences (structural integrity, coordination, documentation).

From the tool's own definition: "Tool name 'modify_element' in the context of a Revit MCP server with tools for 'building design, editing, analysis'"

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Revit MCP Server (47)

- `delete_elements` — Destructive — https://policylayer.com/tools/demolinator-revit-mcp-server/delete-elements.md
- `execute_revit_code` — Execute — https://policylayer.com/tools/demolinator-revit-mcp-server/execute-revit-code.md
- `set_active_view` — Execute — https://policylayer.com/tools/demolinator-revit-mcp-server/set-active-view.md
- `transform_elements` — Execute — https://policylayer.com/tools/demolinator-revit-mcp-server/transform-elements.md
- `ai_element_filter` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/ai-element-filter.md
- `analyze_model_statistics` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/analyze-model-statistics.md
- `check_clashes` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/check-clashes.md
- `export_room_data` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/export-room-data.md
- `get_current_view_elements` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-current-view-elements.md
- `get_current_view_info` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-current-view-info.md
- `get_element_properties` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-element-properties.md
- `get_material_quantities` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-material-quantities.md
- `get_revit_model_info` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-revit-model-info.md
- `get_revit_status` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-revit-status.md
- `get_revit_view` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-revit-view.md
- `get_selected_elements` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/get-selected-elements.md
- `list_category_parameters` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/list-category-parameters.md
- `list_families` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/list-families.md
- `list_family_categories` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/list-family-categories.md
- `list_levels` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/list-levels.md
- `list_revit_views` — Read — https://policylayer.com/tools/demolinator-revit-mcp-server/list-revit-views.md
- `clear_colors` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/clear-colors.md
- `color_splash` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/color-splash.md
- `create_detail_line` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/create-detail-line.md
- `create_dimensions` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/create-dimensions.md
- `create_duct` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/create-duct.md
- `create_grid` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/create-grid.md
- `create_level` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/create-level.md
- `create_line_based_element` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/create-line-based-element.md
- `create_mep_system` — Write — https://policylayer.com/tools/demolinator-revit-mcp-server/create-mep-system.md
- …and 17 more: https://policylayer.com/tools/demolinator-revit-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=demolinator-revit-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/demolinator-revit-mcp-server