simulate_skill_impact

THE RISK

High Risk

Why simulate_skill_impact needs a policy

This tool performs a simulation—a deterministic execution of game mechanics logic based on input parameters (skill damage, enemy HP). While it doesn't create permanent data changes or delete anything, and the effects are confined to game design analysis, it triggers external computational operations whose results depend on arguments.

From the tool's definition The tool 'simulates' which involves running a computational operation to determine 'how effective a skill is based on damage and enemy HP'. This is a game simulation operation that executes logic to produce outcomes.

Documented attack patterns abuse exactly the kind of access simulate_skill_impact gives an agent:

POLICY

How to control simulate_skill_impact

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Game Helper, and nothing reaches the server without passing your rules. This is the rule we recommend for simulate_skill_impact:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "simulate_skill_impact": {
      "limits": [
        {
          "counter": "simulate_skill_impact_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

simulate_skill_impact stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Mcp Game Helper — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mcp Game Helper tools

Execute simulate_combat Simulate a fight between entities and calculate time to kill Execute simulate_room_survival_time Estimate how long the player survives vs a group of enemies Read predict_performance_impact Analyze a code snippet and warn about potential performance issues Read suggest_ai_state_machine Generates an AI state machine from a behavior description Read suggest_balancing Analyze stats and suggest balancing adjustments Read suggest_difficulty_ramp Analyzes if difficulty progression between levels is well balanced Read suggest_wave_timing Suggests time between enemy waves based on player DPS

All 8 Mcp Game Helper tools →

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Go deeper

High-risk tools in Mcp Game Helper → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about simulate_skill_impact

What does the simulate_skill_impact tool do? +

Simulates how effective a skill is based on damage and enemy HP. It is categorised as a Execute tool in the Mcp Game Helper MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on simulate_skill_impact? +

Register the Mcp Game Helper MCP server in PolicyLayer and add a rule for simulate_skill_impact: 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 Mcp Game Helper. Nothing to install.

What risk level is simulate_skill_impact? +

simulate_skill_impact is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit simulate_skill_impact? +

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

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

simulate_skill_impact is provided by the Mcp Game Helper MCP server (xhulz/mcp-game-helper). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Game Helper tool call.

Start from Mcp Game Helper, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →