List ~61 bundled ComStock measures: baseline systems, upgrades, and setup.
AI agents call list_comstock_measures to retrieve information from Openstudio without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query to display available ComStock measures. It retrieves and presents information about baseline systems, upgrades, and setup measures but does not execute them, create new ones, modify data, or trigger simulations. The blast radius of misuse is minimal—an AI agent cannot cause harm by listing available measures.
From the tool's definition Tool name 'list_comstock_measures' and description 'List ~61 bundled ComStock measures' indicate a retrieval operation that enumerates existing measures without modification, creation, or execution.
Documented attack patterns abuse exactly the kind of access list_comstock_measures gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Openstudio, and nothing reaches the server without passing your rules. This is the rule we recommend for list_comstock_measures:
{
"version": "1",
"default": "deny",
"tools": {
"list_comstock_measures": {}
}
}list_comstock_measures is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List ~61 bundled ComStock measures: baseline systems, upgrades, and setup. It is categorised as a Read tool in the Openstudio MCP Server, which means it retrieves data without modifying state.
Register the Openstudio MCP server in PolicyLayer and add a rule for list_comstock_measures: 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. Nothing to install.
list_comstock_measures 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_comstock_measures 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_comstock_measures. 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_comstock_measures is provided by the Openstudio MCP server (natlabrockies/openstudio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Openstudio, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
146 Openstudio tools catalogued and risk-classified — across an index of 43,000+ MCP servers.