AI agents call list_people_loads to retrieve information from OpenStudio MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'list_' prefix and context within a building energy modeling system strongly suggests this tool queries and returns people load parameters (occupancy density, schedules, etc.) from the model without modifying data. Although the description is empty, the naming convention and sibling tools confirm a read-only operation with minimal security impact.
From the tool's definition Tool name 'list_people_loads' indicates a retrieval operation querying occupancy-related model data. The sibling tools include read-only operations like 'get_building_info', 'get_model_summary', 'get_space_details', and 'get_thermal_zone_details',…
Documented attack patterns abuse exactly the kind of access list_people_loads gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OpenStudio MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_people_loads:
{
"version": "1",
"default": "deny",
"tools": {
"list_people_loads": {}
}
}list_people_loads is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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list_people_loads. It is categorised as a Read tool in the OpenStudio MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenStudio MCP Server MCP server in PolicyLayer and add a rule for list_people_loads: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches OpenStudio MCP Server. Nothing to install.
list_people_loads is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_people_loads rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_people_loads. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_people_loads is provided by the OpenStudio MCP Server MCP server (roruizf/openstudio-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from OpenStudio MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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20 OpenStudio MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.