Get UV index forecast and sun protection advice for a city (3-day outlook).
AI agents call get_uv_index to retrieve information from Weather 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 weather-related information (UV index forecast and advice) from external weather data sources (Open-Meteo) and returns it to the caller. There are no side effects, no data modification, no code execution, and no destructive operations. The blast radius of misuse is negligible - incorrect UV index data cannot cause financial loss, system compromise, or data destruction.
From the tool's definition Tool description states 'Get UV index forecast and sun protection advice for a city' - explicitly a retrieval/query operation that provides forecast data without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
Get UV index forecast and sun protection advice for a city (3-day outlook). It is categorised as a Read tool in the Weather MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Weather MCP Server MCP server in PolicyLayer and add a rule for get_uv_index: 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 MCP Server. Nothing to install.
get_uv_index 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_uv_index 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_uv_index. 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_uv_index is provided by the Weather MCP Server MCP server (shreyaschhabra/weather-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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