Refuel_Ship · SpaceTraders MCP Server MCP: Risk & Policy

WHAT IT DOES

What Refuel_Ship does on SpaceTraders MCP Server

AI agents use Refuel_Ship 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 Refuel_Ship needs a policy

Based on the tool name and server context (SpaceTraders API managing fleets and trading operations), Refuel_Ship most likely modifies a ship's fuel state by consuming resources or credits, which is a reversible write operation. However, since the description is empty, confidence is reduced.

From the tool's definition Tool name 'Refuel_Ship'; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

Refuel_Ship Rate-limited

Refuel_Ship 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": {
    "Refuel_Ship": {
      "limits": [
        {
          "counter": "refuel_ship_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 Refuel_Ship

What does the Refuel_Ship tool do? +

Refuel_Ship. 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 Refuel_Ship? +

Register the SpaceTraders MCP Server MCP server in PolicyLayer and add a rule for Refuel_Ship: 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 Refuel_Ship? +

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

Can I rate-limit Refuel_Ship? +

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

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

Refuel_Ship 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.