commuter_summary
AI agents call commuter_summary to retrieve information from Swiss Rail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears designed to summarize commuter transportation data, consistent with other publicly-available Swiss rail information queries on this server. Zero-authentication public transport API means the tool likely retrieves aggregated or anonymized transit statistics. Even if it returns personal commute patterns, it has no write, execution, or destructive capabilities.
From the tool's definition Tool name 'commuter_summary' suggests data retrieval; sibling tools on this server are all Read operations (get_connections, get_disruptions, get_station_facilities, get_stationboard, find_station, etc.).
Attacks that exploit this kind of access
commuter_summary. It is categorised as a Read tool in the Swiss Rail MCP Server, which means it retrieves data without modifying state.
Register the Swiss Rail MCP server in PolicyLayer and add a rule for commuter_summary: 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 Swiss Rail. Nothing to install.
commuter_summary 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 commuter_summary 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 commuter_summary. 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.
commuter_summary is provided by the Swiss Rail MCP server (kintscher/swiss-rail-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.
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