place_option_market_order

A financial tool on the Alpaca MCP server.

SERVERAlpaca MCP Server SOURCEcliffsgpt/alpaca-mcp-clone

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/cliffsgpt-alpaca-mcp-clone/place-option-market-order.md

WHAT IT DOES

What place_option_market_order does on Alpaca MCP Server

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

RISK

Why place_option_market_order is rated Critical

Despite the empty description, the tool name unambiguously indicates placing a live options market order, which is a financial action that executes trades and commits real money. Options market orders can result in significant financial exposure. In the context of a trading API server, this is classified as Financial with critical severity due to the potentially large blast radius of an AI agent misusing it.

From the tool's definition Tool name 'place_option_market_order' combined with server description mentioning 'trading operations through Alpaca's Trading API, supporting stocks, options, crypto' — placing market orders commits financial obligations in real markets.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs place_option_market_order safely

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

place_option_market_order Approval-gated

Any call to place_option_market_order 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": {
    "place_option_market_order": {
      "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 Alpaca MCP Server, apply this rule, and every place_option_market_order call is checked against it from then on.

FAQ

Questions about place_option_market_order

What does the place_option_market_order tool do? +

place_option_market_order is a financial tool on the Alpaca MCP Server MCP server. It is categorised as a Financial tool in the Alpaca MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on place_option_market_order? +

Register the Alpaca MCP Server MCP server in PolicyLayer and add a rule for place_option_market_order: 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 Alpaca MCP Server. Nothing to install.

What risk level is place_option_market_order? +

place_option_market_order 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 place_option_market_order? +

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

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

place_option_market_order is provided by the Alpaca MCP Server MCP server (cliffsgpt/alpaca-mcp-clone). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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

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place_market_order on Lighter MCP →place_order on MCP MetaTrader 4 Server →place_order on A2a Demos →place_order on Groww MCP Server → All critical-risk MCP tools → The MCP Attack Database →

Guides

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