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margin_calls

Gets margin call information.

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/margin-calls.md

What margin_calls does on Open Stocks MCP

AI agents call margin_calls 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.

Why margin_calls is rated Low

This tool retrieves margin call data from the brokerage account without modifying, deleting, or executing any transactions. While margin calls relate to financial accounts, the tool itself only reads/displays information rather than moving money or creating obligations. The read nature and informational context place this in the Read category with low severity.

From the tool's definition Tool name 'margin_calls' with description 'Gets margin call information' indicates a retrieval operation. The verb 'Gets' explicitly describes a read-only query action with no modification of state.

Questions about margin_calls

What does the margin_calls tool do? +

Gets margin call information. 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 margin_calls? +

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

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

Can I rate-limit margin_calls? +

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

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

margin_calls 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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