获取指定城市的实时天气信息。
AI agents call get_current_weather to retrieve information from 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 weather data without side effects. It queries the QWeather API to fetch current conditions for a city, which is a pure read operation. No data is created, modified, deleted, or financial/destructive actions are possible. Severity is low as weather data misuse poses minimal harm.
From the tool's definition Tool name 'get_current_weather' and description indicate retrieval of current weather data ('获取指定城市的实时天气信息' = 'Get real-time weather information for a specified city'). No modification, deletion, or execution of external operations occurs.
Attacks that exploit this kind of access
获取指定城市的实时天气信息。. It is categorised as a Read tool in the Weather MCP MCP Server, which means it retrieves data without modifying state.
Register the Weather MCP server in PolicyLayer and add a rule for get_current_weather: 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. Nothing to install.
get_current_weather 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_current_weather 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_current_weather. 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_current_weather is provided by the Weather MCP server (jayleonc/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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