Register_Users · SpaceTraders MCP Server MCP: Risk & Policy

WHAT IT DOES

What Register_Users does on SpaceTraders MCP Server

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

WHY IT NEEDS A POLICY

Why Register_Users needs a policy

Registering users creates new accounts and initializes game state, which is a Write operation (creates data reversibly). It's not Destructive because registration doesn't delete or overwrite existing data irreversibly. Severity is medium because misuse could create unauthorized accounts or spam registrations, but financial impact is indirect.

From the tool's definition Tool name 'Register_Users' indicates user account creation. Within the SpaceTraders universe context, registration creates new agent accounts and associated game state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

Register_Users Rate-limited

Register_Users 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": {
    "Register_Users": {
      "limits": [
        {
          "counter": "register_users_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 SpaceTraders MCP Server, so you can run agents against it safely.

FAQ

Questions about Register_Users

What does the Register_Users tool do? +

Register_Users. It is categorised as a Write tool in the SpaceTraders 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 Register_Users? +

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

What risk level is Register_Users? +

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

Can I rate-limit Register_Users? +

Yes. Add a rate_limit block to the Register_Users 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 Register_Users completely? +

Set action: deny in the PolicyLayer policy for Register_Users. 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 Register_Users? +

Register_Users is provided by the SpaceTraders MCP Server MCP server (thevalverde/spacetraders-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.