place_order · Opinion Trade MCP Server MCP: Risk & Policy

WHAT IT DOES

What place_order does on Opinion Trade MCP Server

AI agents use place_order to commit financial operations through Opinion Trade MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.

WHY IT NEEDS A POLICY

Why place_order needs a policy

This tool directly executes trades on a decentralized prediction market, committing financial obligations by placing buy/sell orders. The EIP712 signing confirms cryptographic authorization of on-chain financial transactions on BNB Chain. Misuse could result in unintended financial loss with no reversal mechanism.

From the tool's definition Place a limit or market order with EIP712 signing

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

place_order Approval-gated

Any call to place_order is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "place_order": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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

FAQ

Questions about place_order

What does the place_order tool do? +

Place a limit or market order with EIP712 signing. It is categorised as a Financial tool in the Opinion Trade MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on place_order? +

Register the Opinion Trade MCP Server MCP server in PolicyLayer and add a rule for place_order: 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 Opinion Trade MCP Server. Nothing to install.

What risk level is place_order? +

place_order is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit place_order? +

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

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

place_order is provided by the Opinion Trade MCP Server MCP server (solenyaresearch0000/opinion-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.