# set_parameter

A write tool on the Revit MCP Server MCP server.

Agent View of the PolicyLayer registry record for `set_parameter`. HTML page: https://policylayer.com/tools/demolinator-revit-mcp-server/set-parameter

## Facts

- Tool: `set_parameter`
- 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": "set_parameter",
    "arguments": {}
  }
}
```

## Why set_parameter is rated Medium

The tool modifies data (Revit element parameters) reversibly, fitting the Write category. The lack of descriptive text lowers confidence slightly (0.85), but the clear naming pattern and context of sibling tools (create_detail_line, create_dimensions, etc.) confirm this is a model editing operation.

From the tool's own definition: "Tool name 'set_parameter' indicates modification of parameters (properties) in Revit elements. No description provided, but naming convention strongly suggests reversible parameter modification."

## Use case

AI agents use set_parameter 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": {
    "set_parameter": {
      "limits": [
        {
          "counter": "set_parameter_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