Get foreign investor holdings by industry category
AI agents call getForeignCategoryHoldings to retrieve information from TWSE MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves market data (foreign investor holdings aggregated by industry category) without modifying, executing, or triggering any actions. It has no side effects and poses minimal risk even if queried by an AI agent. The information returned is already public market data from the Taiwan Stock Exchange.
From the tool's definition Tool name 'getForeignCategoryHoldings' and description 'Get foreign investor holdings by industry category' indicate a data retrieval operation.
Attacks that exploit this kind of access
Get foreign investor holdings by industry category. It is categorised as a Read tool in the TWSE MCP Server MCP Server, which means it retrieves data without modifying state.
Register the TWSE MCP Server MCP server in PolicyLayer and add a rule for getForeignCategoryHoldings: 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 TWSE MCP Server. Nothing to install.
getForeignCategoryHoldings 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 getForeignCategoryHoldings 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 getForeignCategoryHoldings. 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.
getForeignCategoryHoldings is provided by the TWSE MCP Server MCP server (pyang2045/twsemcp). 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.
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