AI agents call query_timeseries 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.
The name strongly suggests this is a read-only operation that retrieves time-series data from simulation results, with no apparent side effects. However, confidence is moderate (0.7) rather than high because the description is empty, preventing verification of actual behavior.
From the tool's definition Tool name 'query_timeseries' indicates data retrieval with no modification capability. Server context (building energy simulation) suggests querying simulation results over time.
Documented attack patterns abuse exactly the kind of access query_timeseries 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 query_timeseries:
{
"version": "1",
"default": "deny",
"tools": {
"query_timeseries": {}
}
}query_timeseries is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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query_timeseries. 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 query_timeseries: 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.
query_timeseries 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 query_timeseries 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 query_timeseries. 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.
query_timeseries 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.
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146 Openstudio tools catalogued and risk-classified — across an index of 43,000+ MCP servers.