# create_room A write tool on the Revit MCP Server MCP server. Agent View of the PolicyLayer registry record for `create_room`. HTML page: https://policylayer.com/tools/demolinator-revit-mcp-server/create-room ## Facts - Tool: `create_room` - 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": "create_room", "arguments": {} } } ``` ## Why create_room is rated Medium The tool creates a new room element in Revit, which is a reversible Write operation (rooms can be deleted or modified). It modifies the building model but does not delete data (would be Destructive) or execute arbitrary code (would be Execute). The lack of a detailed description reduces confidence slightly, but the name and server context are clear enough to categorize as Write. From the tool's own definition: "Tool name 'create_room' indicates creation of a new element within a Revit model. Given the server context of 'building design, editing, analysis' and sibling tools like 'create_detail_line', 'create_dimensions', 'create_duct', 'create_grid', and…" ## Use case AI agents use create_room 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": { "create_room": { "limits": [ { "counter": "create_room_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