Get companies that have been delisted or suspended
AI agents call getSuspendedListings 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 and queries static market data about delisted or suspended companies from the Taiwan Stock Exchange. It performs no modifications, deletions, executions, or financial transactions. The information is already public and the tool merely provides access to it, making it a straightforward Read operation with minimal risk.
From the tool's definition Tool name 'getSuspendedListings' and description 'Get companies that have been delisted or suspended' indicate a data retrieval operation.
Attacks that exploit this kind of access
Get companies that have been delisted or suspended. 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 getSuspendedListings: 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.
getSuspendedListings 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 getSuspendedListings 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 getSuspendedListings. 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.
getSuspendedListings 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.
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