AI agents call ptv_departures to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
api_key | string | — | |
stop_id | number | Yes | |
route_id | number | — | |
route_type | number | Yes | 0=train,1=tram,2=bus,3=vline,4=night |
max_results | number | — |
Parameters from the server's own tool schema.
This tool retrieves real-time or scheduled departure information from PTV (Public Transport Victoria) for a specified stop. It is a read-only query operation with no side effects, data modification, code execution, or financial implications. The severity is low because misuse would only result in excessive queries or information disclosure of public transport schedules.
From the tool's definition Tool name 'ptv_departures' and description 'Get PTV departures for a stop' indicate a retrieval operation that queries public transport departure information without modifying any data.
Risk signalsHandles credentials or secrets (api_key)
Attacks that exploit this kind of access
Get PTV departures for a stop. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
ptv_departures accepts 5 parameters: api_key, stop_id, route_id, route_type, max_results. Required: stop_id, route_type. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for ptv_departures: 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 UnClick. Nothing to install.
ptv_departures 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 ptv_departures 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 ptv_departures. 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.
ptv_departures is provided by the UnClick MCP server (@unclick/mcp-server). 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.
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