Get hourly weather forecast for up to 48 hours for a location. If no location is provided, will automatically detect location from IP address.
AI agents call get_hourly_forecast to retrieve information from OpenWeatherMap MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
get_hourly_forecast retrieves weather forecast information without creating, modifying, deleting, or executing any operations. It is a read-only query operation. Severity is low because misuse cannot cause harm—returning weather data to an AI agent has minimal blast radius. The tool provides informational data only.
From the tool's definition Tool description explicitly states it retrieves ('Get') hourly weather forecast data with 'no location provided' fallback to IP detection.
Attacks that exploit this kind of access
Get hourly weather forecast for up to 48 hours for a location. If no location is provided, will automatically detect location from IP address. It is categorised as a Read tool in the OpenWeatherMap MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenWeatherMap MCP Server MCP server in PolicyLayer and add a rule for get_hourly_forecast: 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 OpenWeatherMap MCP Server. Nothing to install.
get_hourly_forecast 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 get_hourly_forecast 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 get_hourly_forecast. 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.
get_hourly_forecast is provided by the OpenWeatherMap MCP Server MCP server (tristau/openweathermap-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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