list_custom_metrics
AI agents call list_custom_metrics to retrieve information from Ai Analyst without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries and returns a list of custom metrics. Despite the empty description, the name strongly indicates a Read operation that retrieves information about existing metrics. The confidence is slightly reduced due to the missing description, but 'list' is a clear read-only verb. The severity is low as listing data poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'list_custom_metrics' follows the 'list' verb pattern, which retrieves or queries data without side effects.
Attacks that exploit this kind of access
list_custom_metrics. It is categorised as a Read tool in the Ai Analyst MCP Server, which means it retrieves data without modifying state.
Register the Ai Analyst MCP server in PolicyLayer and add a rule for list_custom_metrics: 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 Ai Analyst. Nothing to install.
list_custom_metrics 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_custom_metrics 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_custom_metrics. 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_custom_metrics is provided by the Ai Analyst MCP server (sbdk-dev/local-ai-analyst). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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