# tag_elements A write tool on the Revit MCP Server MCP server. Agent View of the PolicyLayer registry record for `tag_elements`. HTML page: https://policylayer.com/tools/demolinator-revit-mcp-server/tag-elements ## Facts - Tool: `tag_elements` - 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": "tag_elements", "arguments": {} } } ``` ## Why tag_elements is rated Medium Tagging elements in Revit is a metadata/annotation operation that modifies model content (tags are persistent annotations) but remains reversible—tags can be deleted or edited. This fits the Write category rather than Read (it modifies state) or Destructive (it can be undone). From the tool's own definition: "Tool name 'tag_elements' suggests adding or modifying tags on Revit elements. Within the Revit/BIM context alongside sibling tools like 'create_detail_line', 'create_dimensions', and 'create_duct', tagging elements represents a reversible modification…" ## Use case AI agents use tag_elements 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": { "tag_elements": { "limits": [ { "counter": "tag_elements_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