AI agents call qd_list_filter_groups to retrieve information from QuantData MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'list' verb and '_filter_groups' noun suggest retrieval of existing filter configurations without side effects. No description increases uncertainty slightly, but naming convention strongly indicates a query operation typical of Read category tools. In context of a financial data analytics platform, listing filters is a safe, non-mutating operation.
From the tool's definition Tool name 'qd_list_filter_groups' indicates a listing/retrieval operation with no modification verb. Despite empty description, the name pattern matches standard Read operations (list, get, fetch).
Documented attack patterns abuse exactly the kind of access qd_list_filter_groups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and QuantData MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for qd_list_filter_groups:
{
"version": "1",
"default": "deny",
"tools": {
"qd_list_filter_groups": {}
}
}qd_list_filter_groups is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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qd_list_filter_groups. It is categorised as a Read tool in the QuantData MCP Server MCP Server, which means it retrieves data without modifying state.
Register the QuantData MCP Server MCP server in PolicyLayer and add a rule for qd_list_filter_groups: 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 QuantData MCP Server. Nothing to install.
qd_list_filter_groups 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 qd_list_filter_groups 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 qd_list_filter_groups. 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.
qd_list_filter_groups is provided by the QuantData MCP Server MCP server (zzulanas/quantdata-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from QuantData 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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50 QuantData MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.