Retrieves statistics about log streams matching a given LogQL selector within a Loki datasource
AI agents call query_loki_stats 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 tool queries Loki (a log aggregation system) to fetch statistics about matching log streams. It performs data retrieval with no side effects, no code execution, no data modification, and no irreversible actions. This is a straightforward Read operation.
From the tool's definition Tool description states it 'Retrieves statistics about log streams' - a query operation with no modification or execution of external commands. The verb 'Retrieves' and the focus on 'statistics' indicate read-only data access.
Attacks that exploit this kind of access
Retrieves statistics about log streams matching a given LogQL selector within a Loki datasource. 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 query_loki_stats: 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.
query_loki_stats 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_loki_stats 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_loki_stats. 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_loki_stats 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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