shuffle_array · Random Web3 MCP: Risk & Policy

WHAT IT DOES

What shuffle_array does on Random Web3

AI agents invoke shuffle_array to trigger actions in Random Web3. 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 shuffle_array needs a policy

The tool name 'shuffle_array' implies reordering/rearranging array elements. With no description available, confidence is low. Given the server context of random element generation, this likely executes a shuffle operation using EVM block hash randomness. It could be a Read/Execute operation that returns a shuffled array.

From the tool's definition Tool name 'shuffle_array' and empty description; sibling tools suggest random generation operations on EVM blockchain

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

shuffle_array Rate-limited

shuffle_array 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": {
    "shuffle_array": {
      "limits": [
        {
          "counter": "shuffle_array_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 Random Web3, so you can run agents against it safely.

FAQ

Questions about shuffle_array

What does the shuffle_array tool do? +

shuffle_array. It is categorised as a Execute tool in the Random Web3 MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on shuffle_array? +

Register the Random Web3 MCP server in PolicyLayer and add a rule for shuffle_array: 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 Random Web3. Nothing to install.

What risk level is shuffle_array? +

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

Can I rate-limit shuffle_array? +

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

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

shuffle_array is provided by the Random Web3 MCP server (suxiongye/random-web3-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.