execute_single_trade · Composer Trade MCP: Risk & Policy

WHAT IT DOES

What execute_single_trade does on Composer Trade

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

WHY IT NEEDS A POLICY

Why execute_single_trade needs a policy

The tool name 'execute_single_trade' strongly implies it places a financial trade, which is a Financial category action. The server context explicitly describes trading capabilities including automated investing strategies.

From the tool's definition Tool name 'execute_single_trade' on a server described as enabling trading of automated investing strategies on Composer, with tools for 'trade automated investing strategies'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

execute_single_trade Approval-gated

Any call to execute_single_trade 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": {
    "execute_single_trade": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about execute_single_trade

What does the execute_single_trade tool do? +

execute_single_trade. It is categorised as a Financial tool in the Composer Trade MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on execute_single_trade? +

Register the Composer Trade MCP server in PolicyLayer and add a rule for execute_single_trade: 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 Composer Trade. Nothing to install.

What risk level is execute_single_trade? +

execute_single_trade 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 execute_single_trade? +

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

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

execute_single_trade is provided by the Composer Trade MCP server (tanwithme/composer-trade-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.