Get current service alerts.
AI agents call trip_alerts_tool to retrieve information from CATA Bus 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 displays existing service alert information without creating, modifying, deleting, or executing any actions. It is a straightforward data retrieval operation with no side effects. The context of a public transit information API confirms this is a read-only query function.
From the tool's definition Tool description states 'Get current service alerts' with no modification or side effects. Named 'trip_alerts_tool' indicating retrieval of alert data.
Attacks that exploit this kind of access
Get current service alerts. It is categorised as a Read tool in the CATA Bus MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CATA Bus MCP Server MCP server in PolicyLayer and add a rule for trip_alerts_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 CATA Bus MCP Server. Nothing to install.
trip_alerts_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 trip_alerts_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 trip_alerts_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.
trip_alerts_tool is provided by the CATA Bus MCP Server MCP server (pranav-karra-3301/catabus-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →