ig_update_position · IG Trading MCP: Risk & Policy

WHAT IT DOES

What ig_update_position does on IG Trading MCP

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

WHY IT NEEDS A POLICY

Why ig_update_position needs a policy

Modifying stop/limit levels on an open trading position directly affects financial risk parameters and potential profit/loss outcomes on live trades. This constitutes a financial operation as it governs when positions are automatically closed, impacting real monetary outcomes. The broader server context (forex, indices, commodities trading) confirms real financial exposure.

From the tool's definition Update stop/limit levels for an open position

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ig_update_position Approval-gated

Any call to ig_update_position 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": {
    "ig_update_position": {
      "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 IG Trading MCP, so you can run agents against it safely.

FAQ

Questions about ig_update_position

What does the ig_update_position tool do? +

Update stop/limit levels for an open position. It is categorised as a Financial tool in the IG Trading MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on ig_update_position? +

Register the IG Trading MCP server in PolicyLayer and add a rule for ig_update_position: 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 IG Trading MCP. Nothing to install.

What risk level is ig_update_position? +

ig_update_position 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 ig_update_position? +

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

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

ig_update_position is provided by the IG Trading MCP server (kea0811/ig-trading-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.