List all 10 ASHRAE 90.1 Appendix G baseline system types plus DOAS, VRF, radiant templates.
AI agents call list_baseline_systems 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 queries and returns a static or semi-static inventory of baseline system templates. It has no side effects, creates no resources, executes no simulations or commands, and cannot modify or delete data. It is purely informational retrieval, fitting the 'Read' category with low severity since misuse would only expose reference information about energy system types.
From the tool's definition Tool name and description both indicate a listing/retrieval operation: 'list_baseline_systems' retrieves and displays predefined ASHRAE 90.1 baseline system types and templates. No modification, execution, deletion, or financial transaction occurs.
Documented attack patterns abuse exactly the kind of access list_baseline_systems 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_baseline_systems:
{
"version": "1",
"default": "deny",
"tools": {
"list_baseline_systems": {}
}
}list_baseline_systems is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
List all 10 ASHRAE 90.1 Appendix G baseline system types plus DOAS, VRF, radiant templates. 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_baseline_systems: 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_baseline_systems 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_baseline_systems 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_baseline_systems. 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_baseline_systems 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.