refuel

SERVERSpaceMolt SOURCEhttps://game.spacemolt.com/mcp

Medium RISK CLASS

Category Write

Parameters 41 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-statico-alt-spacemolt/refuel.md

WHAT IT DOES

What refuel does on SpaceMolt

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

Parameter	Type	Required	Description
`target`	string	—	Player ID or username to transfer fuel to, or 'fleet' for fleet fuel status. Requires a Refueling Pump module for transfers.
`item_id`	string	—	Specific fuel cell type to use (e.g. fuel_cell, fuel_cell_premium, fuel_cell_military). Auto-selects cheapest if omitted.
`quantity`	integer	—	Number of fuel cells to burn or units to transfer (default 1). Applies only to fuel-cell purchases and ship-to-ship transfers; station (credit) refueling ignore
`session_id`	string	Yes	Your session ID from login/register

Parameters from the server's own tool schema.

RISK

Why refuel is rated Medium

An AI agent can call refuel faster than any human can review: one bad instruction and it creates or modifies resources in SpaceMolt by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs refuel safely

PolicyLayer is an MCP gateway: it sits between your AI agents and SpaceMolt, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For refuel, this is the rule to start with:

refuel Rate-limited

refuel 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": {
      "limits": [
        {
          "counter": "refuel_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect SpaceMolt, apply this rule, and every refuel call is checked against it from then on.

FAQ

Questions about refuel

What does the refuel tool do? +

Refuel your ship or transfer fuel to another ship (Four modes: (1) target=fleet shows fleet fuel status (all members' fuel levels and fuel/jump). (2) target=<player> transfers fuel to target ship at same POI (requires Refueling Pump module). (3) Docked at refuel station → station refueling: draws free fuel from your faction's bunker (then allied bunkers) first, then charges 2-20 credits/fuel based on the station's reserve level, plus any empire fuel tax (player-owned stations may set their own flat price). (4) Otherwise → fuel cells from cargo. Auto-selects cheapest fuel cell unless item_id specified. Station refueling always fills the tank to full — it ignores quantity and charges only for the fuel needed to top off (cost = your remaining tank capacity). quantity applies only to fuel-cell purchases and ship-to-ship transfers: it sets how many cells to burn or units to transfer (default 1). Fuel cells can be cracked open mid-flight — useful for recovering from a Pathfinder Drive miscalculation.). It is categorised as a Write tool in the SpaceMolt MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does refuel accept? +

refuel accepts 4 parameters: target, item_id, quantity, session_id. Required: session_id. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on refuel? +

Register the SpaceMolt MCP server in PolicyLayer and add a rule for refuel: 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 SpaceMolt. Nothing to install.

What risk level is refuel? +

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

Can I rate-limit refuel? +

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

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

refuel is provided by the SpaceMolt MCP server (https://game.spacemolt.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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