modify_position

Modify stop loss and/or take profit of a position.

SERVERMCP Trader Server SOURCEaf7007/mcp-trader

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/af7007-mcp-trader/modify-position.md

WHAT IT DOES

What modify_position does on MCP Trader Server

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

RISK

Why modify_position is rated Medium

This tool modifies existing trading position parameters (stop loss and take profit levels). While it doesn't directly move money or execute new trades, altering stop loss/take profit levels on live positions can have significant financial consequences — e.g., removing a stop loss could expose a position to unlimited losses.

From the tool's definition Modify stop loss and/or take profit of a position

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs modify_position safely

PolicyLayer is an MCP gateway: it sits between your AI agents and MCP Trader Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For modify_position, this is the rule to start with:

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.

The button opens the PolicyLayer dashboard: create your workspace, connect MCP Trader Server, apply this rule, and every modify_position call is checked against it from then on.

FAQ

Questions about modify_position

What does the modify_position tool do? +

Modify stop loss and/or take profit of a position. It is categorised as a Write tool in the MCP Trader 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 MCP Trader 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 MCP Trader 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 MCP Trader Server MCP server (af7007/mcp-trader). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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