Tool mirror of trading://portfolio/entities resource for universal client compatibility.
AI agents call resource_portfolio_entities_tool to retrieve information from Alpaca MCP Gold Standard without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool appears to fetch or list portfolio entities for inspection or analysis purposes. It functions as a data accessor following the resource mirror pattern. The low severity reflects that reading portfolio composition data poses minimal direct risk—the blast radius is limited to information disclosure rather than state modification or financial transactions.
From the tool's definition Tool is described as a 'mirror' of a 'portfolio/entities resource' which indicates it retrieves or queries portfolio entity data without modifying state. The name includes 'resource' and no action verb suggesting mutation (create, update, delete, execute).
Attacks that exploit this kind of access
Tool mirror of trading://portfolio/entities resource for universal client compatibility. It is categorised as a Read tool in the Alpaca MCP Gold Standard MCP Server, which means it retrieves data without modifying state.
Register the Alpaca MCP Gold Standard MCP server in PolicyLayer and add a rule for resource_portfolio_entities_tool: 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 Gold Standard. Nothing to install.
resource_portfolio_entities_tool 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 resource_portfolio_entities_tool 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 resource_portfolio_entities_tool. 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.
resource_portfolio_entities_tool is provided by the Alpaca MCP Gold Standard MCP server (joravetz/alpaca-mcp-gold). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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