AI agents call billing_history_list to retrieve information from Remnawave without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves billing history records for viewing purposes only. The verb 'list' is a classic Read operation that queries existing data without creating, modifying, or deleting entries. While the data involves financial information, the tool itself performs no financial transactions, money movement, or commitments—it only displays historical records.
From the tool's definition Tool name 'billing_history_list' and description 'List billing history' indicate a retrieval operation with no modification capability.
Documented attack patterns abuse exactly the kind of access billing_history_list gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Remnawave, and nothing reaches the server without passing your rules. This is the rule we recommend for billing_history_list:
{
"version": "1",
"default": "deny",
"tools": {
"billing_history_list": {}
}
}billing_history_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List billing history. It is categorised as a Read tool in the Remnawave MCP Server, which means it retrieves data without modifying state.
Register the Remnawave MCP server in PolicyLayer and add a rule for billing_history_list: 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 Remnawave. Nothing to install.
billing_history_list 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_history_list 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_history_list. 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_history_list is provided by the Remnawave MCP server (trackline/mcp-remnawave). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 153 Remnawave tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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153 Remnawave tools catalogued and risk-classified — across an index of 42,500+ MCP servers.