AI agents call subscriptions_get_by_username 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 queries and retrieves existing subscription data indexed by username. It performs a lookup without creating, modifying, deleting, or executing anything. The action is read-only and safe for standard data access. In the context of VPN panel management, retrieving subscription details is a routine query operation typical of admin dashboards.
From the tool's definition Tool name contains 'get' and description states 'Get subscription details by username' — a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access subscriptions_get_by_username 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 subscriptions_get_by_username:
{
"version": "1",
"default": "deny",
"tools": {
"subscriptions_get_by_username": {}
}
}subscriptions_get_by_username is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get subscription details by username. 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 subscriptions_get_by_username: 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.
subscriptions_get_by_username 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 subscriptions_get_by_username 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 subscriptions_get_by_username. 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.
subscriptions_get_by_username 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.