queue_proposal

THE RISK

High Risk

This tool queues a governance proposal for execution in a timelock contract. While 'queuing' is a preparatory step before execution, it triggers an on-chain transaction that schedules execution — an external blockchain operation with real effects. It is not merely writing metadata; it initiates a time-locked execution pipeline on a smart contract. Misuse could schedule malicious or unintended governance actions.

From the tool's definition Queue a successful proposal for execution (requires Timelock)

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

HOW TO CONTROL QUEUE_PROPOSAL

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 queue_proposal:

policy.json

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

queue_proposal 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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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 queue_proposal tool do? +

Queue a successful proposal for execution (requires Timelock). 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 queue_proposal? +

Register the BNB Chain MCP server in PolicyLayer and add a rule for queue_proposal: 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 queue_proposal? +

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

Can I rate-limit queue_proposal? +

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

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

queue_proposal 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 QUEUE_PROPOSAL ON BNB CHAIN MCP DOES

// THE RISK

// HOW TO CONTROL QUEUE_PROPOSAL

// EXPLORE