close_positions_by_symbol

Close all positions for a specific symbol.

SERVERMCP Trader Server SOURCEaf7007/mcp-trader

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/af7007-mcp-trader/close-positions-by-symbol.md

WHAT IT DOES

What close_positions_by_symbol does on MCP Trader Server

AI agents call close_positions_by_symbol to permanently remove resources in MCP Trader Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why close_positions_by_symbol is rated Critical

Closing all positions for a symbol is a financial and irreversible trading action — open positions are terminated, locking in gains or losses with no undo. It commits financial consequences across potentially multiple trades simultaneously, making it both Financial and Destructive in nature.

From the tool's definition Close all positions for a specific symbol

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs close_positions_by_symbol 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 close_positions_by_symbol, this is the rule to start with:

close_positions_by_symbol Hidden

close_positions_by_symbol is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "close_positions_by_symbol"
  ]
}

RESTRICT 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 close_positions_by_symbol call is checked against it from then on.

FAQ

Questions about close_positions_by_symbol

What does the close_positions_by_symbol tool do? +

Close all positions for a specific symbol. It is categorised as a Destructive tool in the MCP Trader Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on close_positions_by_symbol? +

Register the MCP Trader Server MCP server in PolicyLayer and add a rule for close_positions_by_symbol: 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 close_positions_by_symbol? +

close_positions_by_symbol is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit close_positions_by_symbol? +

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

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

close_positions_by_symbol 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.

KEEP EXPLORING

More on MCP Trader Server, and thousands of servers like it.

This server

All 45 MCP Trader Server tools → Critical-risk tools on this server →

Across the catalogue

All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern database agents →Blast radius →Tool call approval →