get_billing_instances
AI agents call get_billing_instances to retrieve information from Morpheus MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves billing and instance information from the Morpheus platform. While it is fundamentally a Read operation (no modification of data), it exposes potentially sensitive financial and operational metrics that could reveal infrastructure costs, resource utilization patterns, and tenant billing details.
From the tool's definition Tool name 'get_billing_instances' combined with server context (Morpheus cloud infrastructure management) indicates querying billing/usage data for instances.
Attacks that exploit this kind of access
get_billing_instances. It is categorised as a Read tool in the Morpheus MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Morpheus MCP Server MCP server in PolicyLayer and add a rule for get_billing_instances: 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 Morpheus MCP Server. Nothing to install.
get_billing_instances 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_billing_instances 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_billing_instances. 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_billing_instances is provided by the Morpheus MCP Server MCP server (nixndme/morpheus-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.
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