AI agents call list_snow_stations to retrieve information from Mcp Swiss 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 publicly available data about snow measurement station locations and metadata. It has no side effects, does not modify data, execute code, delete records, or involve financial transactions. The action is purely informational and read-only, consistent with the 'Read' category for tools that query or retrieve data without side effects.
From the tool's definition Tool name 'list_snow_stations' and description 'List all SLF snow measurement stations' indicate retrieval of a predefined list of public weather/environmental monitoring stations with no modification or execution capabilities.
Attacks that exploit this kind of access
List all SLF snow measurement stations in Switzerland (IMIS automatic stations and manual study plots). It is categorised as a Read tool in the Mcp Swiss MCP Server, which means it retrieves data without modifying state.
Register the Mcp Swiss MCP server in PolicyLayer and add a rule for list_snow_stations: 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 Mcp Swiss. Nothing to install.
list_snow_stations 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 list_snow_stations 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 list_snow_stations. 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.
list_snow_stations is provided by the Mcp Swiss MCP server (mcp-swiss). 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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