Check your plan and credit balance. Free.
AI agents call billing_status to retrieve information from Gorilla MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and displays billing information (plan details and credit balance). It has no side effects, does not modify data, does not execute code or external operations, and does not involve financial transactions. It is a straightforward read operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'billing_status' and description 'Check your plan and credit balance' indicate a query operation that retrieves account information without modifying or executing anything.
Attacks that exploit this kind of access
Check your plan and credit balance. Free. It is categorised as a Read tool in the Gorilla MCP MCP Server, which means it retrieves data without modifying state.
Register the Gorilla MCP server in PolicyLayer and add a rule for billing_status: 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 Gorilla MCP. Nothing to install.
billing_status 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 billing_status 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 billing_status. 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.
billing_status is provided by the Gorilla MCP server (opusforge/gorilla-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.
Teams ship this data inside their own products. See what a licence covers →