attack · MCP Arena MCP: Risk & Policy

WHAT IT DOES

What attack does on MCP Arena

AI agents invoke attack to trigger actions in MCP Arena. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why attack needs a policy

The tool executes a game action (basic attack) within a turn-based combat simulation. It affects game state by dealing damage to opponents, but operates entirely within a sandboxed arena environment with no real-world data modification, deletion, or financial implications. Severity is low because the blast radius is confined to a game session.

From the tool's definition 'Ataque basico. Rango 3 casillas Manhattan' — triggers a combat action (attack) against a target within 3 Manhattan-distance tiles in the arena

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

attack Rate-limited

attack 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.

View as policy code

policy.json

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

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about attack

What does the attack tool do? +

Ataque basico. Rango 3 casillas Manhattan. It is categorised as a Execute tool in the MCP Arena MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on attack? +

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

What risk level is attack? +

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

Can I rate-limit attack? +

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

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

attack is provided by the MCP Arena MCP server (jerick97/mcp-arena). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.