Get all configured blocklists.
AI agents call get_lists to retrieve information from Mcp Pihole without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves existing blocklist configuration data from Pi-hole. It performs no writes, deletions, executions, or financial operations. The blast radius of misuse is minimal—an agent could only learn what blocklists are configured, which is informational data with no destructive or operational consequences.
From the tool's definition Tool name 'get_lists' and description 'Get all configured blocklists' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get all configured blocklists. It is categorised as a Read tool in the Mcp Pihole MCP Server, which means it retrieves data without modifying state.
Register the Mcp Pihole MCP server in PolicyLayer and add a rule for get_lists: 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 Pihole. Nothing to install.
get_lists 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_lists 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_lists. 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_lists is provided by the Mcp Pihole MCP server (obrien-matthew/mcp-pihole). 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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