sell_stock_stop_loss

Places a stop loss sell order for a stock.

SERVEROpen Stocks MCP SOURCEopen-agent-tools/open-stocks-mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/open-agent-tools-open-stocks-mcp/sell-stock-stop-loss.md

WHAT IT DOES

What sell_stock_stop_loss does on Open Stocks MCP

AI agents use sell_stock_stop_loss to commit financial operations through Open Stocks MCP, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why sell_stock_stop_loss is rated Critical

This tool commits a real financial transaction by placing a sell order on a brokerage account. A stop loss sell order will automatically trigger a stock sale when price conditions are met, moving real money. Misuse could result in unintended liquidation of positions, financial losses, or tax consequences. Financial is the highest severity category and clearly applies here.

From the tool's definition 'Places a stop loss sell order for a stock' — directly executes a financial sell order through broker APIs (Robinhood, Schwab)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sell_stock_stop_loss safely

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

sell_stock_stop_loss Approval-gated

Any call to sell_stock_stop_loss 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": {
    "sell_stock_stop_loss": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about sell_stock_stop_loss

What does the sell_stock_stop_loss tool do? +

Places a stop loss sell order for a stock. It is categorised as a Financial tool in the Open Stocks MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on sell_stock_stop_loss? +

Register the Open Stocks MCP server in PolicyLayer and add a rule for sell_stock_stop_loss: 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 Open Stocks MCP. Nothing to install.

What risk level is sell_stock_stop_loss? +

sell_stock_stop_loss 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 sell_stock_stop_loss? +

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

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

sell_stock_stop_loss is provided by the Open Stocks MCP server (open-agent-tools/open-stocks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Open Stocks, and thousands of servers like it.

This server

All 152 Open Stocks tools → Critical-risk tools on this server →

Across the catalogue

place_stop_loss on Lighter MCP → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →