Tool mirror of trading://symbols/count resource for universal client compatibility.
AI agents call resource_symbols_count_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 retrieves data (a symbol count) from a market data resource without any side effects. It performs a simple query or fetch operation, which is characteristic of the Read category. The low severity reflects minimal blast radius—an AI agent cannot cause harm by querying a symbol count.
From the tool's definition Tool name 'resource_symbols_count_tool' and description 'Tool mirror of trading://symbols/count resource' indicate a query operation that retrieves a count of symbols. No modification, execution, deletion, or financial transaction is implied.
Attacks that exploit this kind of access
Tool mirror of trading://symbols/count 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_symbols_count_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_symbols_count_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_symbols_count_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_symbols_count_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_symbols_count_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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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