aggregate_option_positions

Gets aggregated option positions collapsed by underlying stock.

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

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/open-agent-tools-open-stocks-mcp/aggregate-option-positions.md

WHAT IT DOES

What aggregate_option_positions does on Open Stocks MCP

AI agents call aggregate_option_positions to retrieve information from Open Stocks MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why aggregate_option_positions is rated Low

This tool queries and returns aggregated data about existing option positions without creating, modifying, deleting, or executing any trades. It is a read-only data retrieval operation. The low severity reflects minimal blast radius — misuse would only expose financial information the user already possesses, not execute trades or modify account state.

From the tool's definition Tool name contains 'aggregate' and description states 'Gets aggregated option positions' — a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

aggregate_option_positions Allowed

aggregate_option_positions is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "aggregate_option_positions": {}
  }
}

ALLOW ONLY 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 aggregate_option_positions call is checked against it from then on.

FAQ

Questions about aggregate_option_positions

What does the aggregate_option_positions tool do? +

Gets aggregated option positions collapsed by underlying stock. It is categorised as a Read tool in the Open Stocks MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on aggregate_option_positions? +

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

aggregate_option_positions is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit aggregate_option_positions? +

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

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

aggregate_option_positions 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.

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