prepare_trade · TradeX MCP Server MCP: Risk & Policy

WHAT IT DOES

What prepare_trade does on TradeX MCP Server

AI agents invoke prepare_trade to trigger actions in TradeX MCP Server. 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 prepare_trade needs a policy

This tool simulates and validates trade parameters including margin and fees on the TradeX platform. While it does not finalize a financial transaction, it executes computations against live trading infrastructure and is a required precursor to opening a real position.

From the tool's definition 'Validate if a trade can be placed and simulate margin/fees' — the tool runs a simulation/validation that executes a trade preparation check and fee calculation against external systems

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

prepare_trade Rate-limited

prepare_trade 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": {
    "prepare_trade": {
      "limits": [
        {
          "counter": "prepare_trade_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 TradeX MCP Server, so you can run agents against it safely.

FAQ

Questions about prepare_trade

What does the prepare_trade tool do? +

Validate if a trade can be placed and simulate margin/fees. Always call this before opening a position. It is categorised as a Execute tool in the TradeX MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on prepare_trade? +

Register the TradeX MCP Server MCP server in PolicyLayer and add a rule for prepare_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 TradeX MCP Server. Nothing to install.

What risk level is prepare_trade? +

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

Can I rate-limit prepare_trade? +

Yes. Add a rate_limit block to the prepare_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 prepare_trade completely? +

Set action: deny in the PolicyLayer policy for prepare_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 prepare_trade? +

prepare_trade is provided by the TradeX MCP Server MCP server (tradexcards/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.