custom_subscriptions_create

Server StealthSurf MCP Server stealthsurf-vpn/mcp

Category Write

Risk class Medium

Parameters 00 required

WHAT IT DOES

What custom_subscriptions_create does on StealthSurf MCP Server

AI agents use custom_subscriptions_create to create or update resources in StealthSurf MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your StealthSurf MCP Server environment.

WHY IT NEEDS A POLICY

Why custom_subscriptions_create needs a policy

An AI agent can call custom_subscriptions_create faster than any human can review — one bad instruction and it creates or modifies resources in StealthSurf MCP Server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

custom_subscriptions_create Rate-limited

custom_subscriptions_create stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "custom_subscriptions_create": {
      "limits": [
        {
          "counter": "custom_subscriptions_create_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches StealthSurf MCP Server, so you can run agents against it safely.

FAQ

Questions about custom_subscriptions_create

What does the custom_subscriptions_create tool do? +

Create a custom subscription bundling 1-50 VPN configs into one subscription URL. Items can mix different types: regular configs, cloud server configs, paid option configs. Each item needs item_type, item_reference_id, and optionally item_index (for paid_option_index/paid_option_config). It is categorised as a Write tool in the StealthSurf MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on custom_subscriptions_create? +

Register the StealthSurf MCP Server MCP server in PolicyLayer and add a rule for custom_subscriptions_create: 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 StealthSurf MCP Server. Nothing to install.

What risk level is custom_subscriptions_create? +

custom_subscriptions_create is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit custom_subscriptions_create? +

Yes. Add a rate_limit block to the custom_subscriptions_create 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.

How do I block custom_subscriptions_create completely? +

Set action: deny in the PolicyLayer policy for custom_subscriptions_create. 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.

What MCP server provides custom_subscriptions_create? +

custom_subscriptions_create is provided by the StealthSurf MCP Server MCP server (stealthsurf-vpn/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.