List supported cities, settlement stations, and calibration parameters.
AI agents call list_cities to retrieve information from Weather Edge 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 queries metadata about supported locations and calibration settings. It performs no write, execute, destructive, or financial operations. The function is purely informational, returning static or semi-static configuration data to inform the user of available options. Misuse poses minimal risk as the output cannot be weaponized to damage systems or financial markets.
From the tool's definition Tool is named 'list_cities' and described as listing 'supported cities, settlement stations, and calibration parameters' — a data retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List supported cities, settlement stations, and calibration parameters. It is categorised as a Read tool in the Weather Edge MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Weather Edge MCP Server MCP server in PolicyLayer and add a rule for list_cities: 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 Weather Edge MCP Server. Nothing to install.
list_cities 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_cities 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_cities. 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_cities is provided by the Weather Edge MCP Server MCP server (rjw34/weather-edge-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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