Get weather forecast from European Centre for Medium-Range Weather Forecasts with high-quality global forecasts.
AI agents call ecmwf_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 a public API. It performs a query operation that reads existing data without creating, modifying, deleting, executing code, or committing financial transactions. The blast radius of misuse is minimal—an attacker could only retrieve forecast information, which is publicly available and causes no harm.
From the tool's definition Tool name 'ecmwf_forecast' and description 'Get weather forecast from European Centre for Medium-Range Weather Forecasts' indicate data retrieval only. The verb 'Get' and context of retrieving forecast data confirm read-only operation with no side effects.
Attacks that exploit this kind of access
Get weather forecast from European Centre for Medium-Range Weather Forecasts with high-quality global forecasts. 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 ecmwf_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.
ecmwf_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 ecmwf_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 ecmwf_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.
ecmwf_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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