Get hourly weather forecast for a location. Returns weather data hour by hour for the next 24 hours.
AI agents call getHourlyWeather to retrieve information from Weather API 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 historical or predictive weather data without any side effects. It queries data from the QWeather API and returns results. There is no capability to modify, delete, execute code, or commit financial transactions. This is a straightforward read operation that fits the Read category. The blast radius of misuse is minimal - an attacker could only retrieve public weather data.
From the tool's definition Tool description states 'Get hourly weather forecast' and 'Returns weather data' - purely retrieves weather information with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Get hourly weather forecast for a location. Returns weather data hour by hour for the next 24 hours. It is categorised as a Read tool in the Weather API MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Weather API MCP Server MCP server in PolicyLayer and add a rule for getHourlyWeather: 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 API MCP Server. Nothing to install.
getHourlyWeather 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 getHourlyWeather 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 getHourlyWeather. 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.
getHourlyWeather is provided by the Weather API MCP Server MCP server (yoyooyooo/mcp-weather-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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