sell_option_limit

Places a limit sell order for an option.

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-option-limit.md

WHAT IT DOES

What sell_option_limit does on Open Stocks MCP

AI agents use sell_option_limit 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_option_limit is rated Critical

This tool directly executes financial transactions by placing sell orders for options contracts through broker APIs. Misuse could result in significant financial losses or unintended liquidation of option positions. Options trading carries high financial risk and the action is irreversible once the order is filled.

From the tool's definition Places a limit sell order for an option

Attacks that exploit this kind of access

RECOMMENDED RULE

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

sell_option_limit Approval-gated

Any call to sell_option_limit 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_option_limit": {
      "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_option_limit call is checked against it from then on.

FAQ

Questions about sell_option_limit

What does the sell_option_limit tool do? +

Places a limit sell order for an option. 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_option_limit? +

Register the Open Stocks MCP server in PolicyLayer and add a rule for sell_option_limit: 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_option_limit? +

sell_option_limit 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_option_limit? +

Yes. Add a rate_limit block to the sell_option_limit 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_option_limit completely? +

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

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

Guides

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