Get weather forecast from Norwegian weather service with high-resolution data for Nordic countries.
AI agents call metno_forecast to retrieve information from Open Meteo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves weather forecast data from the Norwegian Meteorological Institute (Met ENorway). It is purely informational—querying and returning weather data with no side effects on any system. The blast radius of misuse is minimal: an AI agent could only retrieve weather information, which causes no harm. This aligns with the 'Read' category for tools that retrieve or query data without side effects.
From the tool's definition Tool name 'metno_forecast' and description 'Get weather forecast' indicate data retrieval. The description explicitly states 'Get' (a read operation) and specifies retrieval of forecast data from an external weather service.
Attacks that exploit this kind of access
Get weather forecast from Norwegian weather service with high-resolution data for Nordic countries. It is categorised as a Read tool in the Open Meteo MCP Server, which means it retrieves data without modifying state.
Register the Open Meteo MCP server in PolicyLayer and add a rule for metno_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 Open Meteo. Nothing to install.
metno_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 metno_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 metno_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.
metno_forecast is provided by the Open Meteo MCP server (windsornguyen/open-meteo-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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