List all Timestream for InfluxDB DB parameter groups.
AI agents call ListDbParamGroups to retrieve information from Prometheus MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple enumeration/listing operation typical of read operations. It queries metadata about database parameter groups and returns information with no side effects, no state changes, and no code execution. The severity is low as it merely exposes configuration information that would typically be accessible to authorized users viewing infrastructure status.
From the tool's definition Tool name 'ListDbParamGroups' and description 'List all Timestream for InfluxDB DB parameter groups' indicate a read-only operation that retrieves and enumerates existing database parameter group configurations without modifying, deleting, or executing any…
Documented attack patterns abuse exactly the kind of access ListDbParamGroups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Prometheus MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for ListDbParamGroups:
{
"version": "1",
"default": "deny",
"tools": {
"ListDbParamGroups": {}
}
}ListDbParamGroups is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all Timestream for InfluxDB DB parameter groups. It is categorised as a Read tool in the Prometheus MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Prometheus MCP Server MCP server in PolicyLayer and add a rule for ListDbParamGroups: 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 Prometheus MCP Server. Nothing to install.
ListDbParamGroups 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 ListDbParamGroups 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 ListDbParamGroups. 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.
ListDbParamGroups is provided by the Prometheus MCP Server MCP server (awslabs.prometheus-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Prometheus 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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805 Prometheus MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.