Get weather forecast for a location by name (uses Nominatim geocoder).
AI agents call get_forecast to retrieve information from Simple Weather MCP 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 weather forecast data based on a location name. There are no modifications, deletions, code execution, financial transactions, or irreversible changes. The operation is purely informational lookup with read-only semantics. The low severity reflects minimal blast radius from misuse—an agent could only retrieve weather data, which poses no risk to systems or data integrity.
From the tool's definition Tool name 'get_forecast' and description 'Get weather forecast for a location by name' indicate retrieval of weather data with no side effects. Uses Nominatim geocoder to look up coordinates and fetch forecast information.
Attacks that exploit this kind of access
Get weather forecast for a location by name (uses Nominatim geocoder). It is categorised as a Read tool in the Simple Weather MCP MCP Server, which means it retrieves data without modifying state.
Register the Simple Weather MCP server in PolicyLayer and add a rule for get_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 Simple Weather MCP. Nothing to install.
get_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_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_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_forecast is provided by the Simple Weather MCP server (markmehere/simple-weather-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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