Get all stops on a specific TFL line. Useful for finding stations served by a particular line.
AI agents call get_line_stops to retrieve information from TFL MCP Server for Poke 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 data (stops/stations served by a TFL line) without modifying, deleting, or executing any operations. It is a pure read operation similar to other sibling tools like 'get_bus_routes' and 'search_stops'. The blast radius of misuse is minimal—an AI agent would only retrieve publicly available transport infrastructure information.
From the tool's definition Tool name 'get_line_stops' and description 'Get all stops on a specific TFL line' indicate a query operation that retrieves static information about London transport infrastructure with no side effects.
Attacks that exploit this kind of access
Get all stops on a specific TFL line. Useful for finding stations served by a particular line. It is categorised as a Read tool in the TFL MCP Server for Poke MCP Server, which means it retrieves data without modifying state.
Register the TFL MCP Server for Poke MCP server in PolicyLayer and add a rule for get_line_stops: 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 TFL MCP Server for Poke. Nothing to install.
get_line_stops 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 get_line_stops 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 get_line_stops. 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.
get_line_stops is provided by the TFL MCP Server for Poke MCP server (vjagiasi/tfl-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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