Get all rule groups for a specific namespace (folder).
AI agents call get_ruler_namespace_rules to retrieve information from Mcp Read Only Grafana without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves monitoring rules for a namespace without any side effects. The 'get_' action verb and absence of any mutation language confirm it is a read-only operation. Even though the server has separate write-capable tools (create_alert_rule, delete_alert_rule, etc.), this specific tool performs only data retrieval, placing it in the Read category with low severity.
From the tool's definition Tool name uses 'get_' prefix and description states 'Get all rule groups' — both indicate retrieval without modification.
Attacks that exploit this kind of access
Get all rule groups for a specific namespace (folder). It is categorised as a Read tool in the Mcp Read Only Grafana MCP Server, which means it retrieves data without modifying state.
Register the Mcp Read Only Grafana MCP server in PolicyLayer and add a rule for get_ruler_namespace_rules: 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 Read Only Grafana. Nothing to install.
get_ruler_namespace_rules 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 get_ruler_namespace_rules 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 get_ruler_namespace_rules. 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.
get_ruler_namespace_rules is provided by the Mcp Read Only Grafana MCP server (lukleh/mcp-read-only-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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