Find tradable options for a stock with optional filtering
AI agents call find_options to retrieve information from Open Paper Trading MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries and returns data about tradable options contracts. It performs a search/lookup operation with no side effects. No money moves, no orders are placed, and no data is modified. This is purely informational retrieval, fitting the Read category. Severity is low because misuse simply returns unwanted market data with no blast radius.
From the tool's definition Tool name is 'find_options' and description states 'Find tradable options for a stock with optional filtering' — this retrieves information about available options without executing trades or modifying state.
Documented attack patterns abuse exactly the kind of access find_options gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Open Paper Trading MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for find_options:
{
"version": "1",
"default": "deny",
"tools": {
"find_options": {}
}
}find_options is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Find tradable options for a stock with optional filtering. It is categorised as a Read tool in the Open Paper Trading MCP MCP Server, which means it retrieves data without modifying state.
Register the Open Paper Trading MCP server in PolicyLayer and add a rule for find_options: 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 Paper Trading MCP. Nothing to install.
find_options is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the find_options 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.
Set action: deny in the PolicyLayer policy for find_options. 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.
find_options is provided by the Open Paper Trading MCP server (open-agent-tools/open-paper-trading-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Open Paper Trading MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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44 Open Paper Trading MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.