AI agents call nw_list_policies to retrieve information from Ppdm without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation to enumerate protection group policies in a NetWorker backup system. It retrieves configuration information for monitoring and auditing purposes with no side effects. The blast radius of misuse is minimal—an attacker gains visibility into backup policies but cannot alter backup configurations, trigger operations, or delete data.
From the tool's definition Tool name 'nw_list_policies' and description 'List NetWorker protection groups (policies)' indicate a query operation that retrieves and displays existing backup policies without modifying, deleting, or executing operations.
Attacks that exploit this kind of access
List NetWorker protection groups (policies). It is categorised as a Read tool in the Ppdm MCP Server, which means it retrieves data without modifying state.
Register the Ppdm MCP server in PolicyLayer and add a rule for nw_list_policies: 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 Ppdm. Nothing to install.
nw_list_policies 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 nw_list_policies 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 nw_list_policies. 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.
nw_list_policies is provided by the Ppdm MCP server (moodswing9/ppdm-mcp-server). 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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