Lists all available label values for a particular label name in profiles
AI agents call list_pyroscope_label_values to retrieve information from Mcp Grafana without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a simple data retrieval operation that queries Pyroscope profiling data to enumerate label values. It does not modify, create, delete, or execute any operations—it only fetches and returns existing metadata about available labels in profiles.
From the tool's definition The tool 'list_pyroscope_label_values' uses the verb 'lists' and retrieves 'available label values', which indicates a read-only query operation with no side effects or state modification.
Attacks that exploit this kind of access
Lists all available label values for a particular label name in profiles. It is categorised as a Read tool in the Mcp Grafana MCP Server, which means it retrieves data without modifying state.
Register the Mcp Grafana MCP server in PolicyLayer and add a rule for list_pyroscope_label_values: 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 Mcp Grafana. Nothing to install.
list_pyroscope_label_values 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_pyroscope_label_values 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_pyroscope_label_values. 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_pyroscope_label_values is provided by the Mcp Grafana MCP server (@leval/mcp-grafana). 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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