Polyline coordinates for drawing a line on a map. Points with
AI agents call bus_get_line_route to retrieve information from Chelaile without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and returns static polyline coordinate data for visualization purposes. It has no side effects, does not modify data, does not execute code or commands, and does not involve financial transactions. The incomplete description ('Points with...') appears to be cut off but gives no indication of capabilities beyond data retrieval.
From the tool's definition Tool name 'bus_get_line_route' and description 'Polyline coordinates for drawing a line on a map' indicate retrieval of geographic/mapping data with no modification or execution of external operations.
Documented attack patterns abuse exactly the kind of access bus_get_line_route gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Chelaile, and nothing reaches the server without passing your rules. This is the rule we recommend for bus_get_line_route:
{
"version": "1",
"default": "deny",
"tools": {
"bus_get_line_route": {}
}
}bus_get_line_route is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Polyline coordinates for drawing a line on a map. Points with. It is categorised as a Read tool in the Chelaile MCP Server, which means it retrieves data without modifying state.
Register the Chelaile MCP server in PolicyLayer and add a rule for bus_get_line_route: 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 Chelaile. Nothing to install.
bus_get_line_route 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 bus_get_line_route 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 bus_get_line_route. 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.
bus_get_line_route is provided by the Chelaile MCP server (peanutsplash/chelaile-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Chelaile, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
15 Chelaile tools catalogued and risk-classified — across an index of 43,000+ MCP servers.