simulate_bundle

THE RISK

High Risk

This tool simulates executing a bundle of transactions on-chain. While 'simulate' implies no real state changes, it executes transaction logic and returns results — functionally an Execute operation. Misuse could expose sensitive transaction logic, gas costs, or be used to probe contract vulnerabilities. The blast radius is high given it operates on BNB Chain financial transaction bundles.

From the tool's definition Simulate a bundle of transactions to check execution and returns

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

HOW TO CONTROL SIMULATE_BUNDLE

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

policy.json

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

simulate_bundle 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 BNB Chain MCP — 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

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All 1240 BNB Chain MCP tools →

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Go deeper

High-risk tools in BNB Chain MCP → 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.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

What does the simulate_bundle tool do? +

Simulate a bundle of transactions to check execution and returns. It is categorised as a Execute tool in the BNB Chain MCP 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_bundle? +

Register the BNB Chain MCP server in PolicyLayer and add a rule for simulate_bundle: 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 BNB Chain MCP. Nothing to install.

What risk level is simulate_bundle? +

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

Can I rate-limit simulate_bundle? +

Yes. Add a rate_limit block to the simulate_bundle 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_bundle completely? +

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

simulate_bundle is provided by the BNB Chain MCP server (nirholas/bnbchain-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every BNB Chain MCP tool call.

Deterministic rules across all 1240 BNB Chain MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

GOVERN BNB CHAIN →

Free to start. No card required.

1240 BNB Chain MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

// WHAT SIMULATE_BUNDLE ON BNB CHAIN MCP DOES

// THE RISK

// HOW TO CONTROL SIMULATE_BUNDLE

// EXPLORE