modify_position · XBTFX MCP Trading Server MCP

WHAT IT DOES

What modify_position does on XBTFX MCP Trading Server

AI agents use modify_position to create or update resources in XBTFX MCP Trading Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your XBTFX MCP Trading Server environment.

WHY IT NEEDS A POLICY

Why modify_position needs a policy

An AI agent can call modify_position faster than any human can review — one bad instruction and it creates or modifies resources in XBTFX MCP Trading Server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

modify_position Rate-limited

modify_position stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "modify_position": {
      "limits": [
        {
          "counter": "modify_position_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about modify_position

What does the modify_position tool do? +

Update SL and/or TP on an open position. Pass 0 to remove SL or TP. At least one of sl or tp is required. It is categorised as a Write tool in the XBTFX MCP Trading Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on modify_position? +

Register the XBTFX MCP Trading Server MCP server in PolicyLayer and add a rule for modify_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 XBTFX MCP Trading Server. Nothing to install.

What risk level is modify_position? +

modify_position is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit modify_position? +

Yes. Add a rate_limit block to the modify_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 modify_position completely? +

Set action: deny in the PolicyLayer policy for modify_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 modify_position? +

modify_position is provided by the XBTFX MCP Trading Server MCP server (xbtfx/xbtfx-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.