Retrieves a list of bills.\r\n \r\n\r\n<h4>Required permission(s):</h4><span class=
AI agents call list_bills to retrieve information from Wpm Mcp Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that retrieves bill information. However, bills are inherently financial documents, so even passive access to billing data carries medium severity risk if exposed to an untrusted AI agent (exposure of financial records, payment history, account details).
From the tool's definition Tool name is 'list_bills' and description states it 'Retrieves a list of bills' — a query operation with no modification of data.
Attacks that exploit this kind of access
Retrieves a list of bills.\r\n \r\n\r\n<h4>Required permission(s):</h4><span class=. It is categorised as a Read tool in the Wpm Mcp Server MCP Server, which means it retrieves data without modifying state.
Register the Wpm Mcp Server MCP server in PolicyLayer and add a rule for list_bills: 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 Wpm Mcp Server. Nothing to install.
list_bills 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_bills 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_bills. 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_bills is provided by the Wpm Mcp Server MCP server (wpm-mcp-server-mcp). 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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