get_realtime_weather
AI agents call get_realtime_weather to retrieve information from KnowAir 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 real-time weather data with no side effects. It fetches information from the Caiyun Weather API and returns it to the user. There is no modification, deletion, code execution, or financial impact. The low severity reflects minimal risk even if called arbitrarily—worst case returns irrelevant weather data.
From the tool's definition Tool name 'get_realtime_weather' indicates data retrieval. Server description states it 'Provides real-time weather' (among other query functions).
Attacks that exploit this kind of access
get_realtime_weather. It is categorised as a Read tool in the KnowAir Weather MCP Server MCP Server, which means it retrieves data without modifying state.
Register the KnowAir Weather MCP Server MCP server in PolicyLayer and add a rule for get_realtime_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 KnowAir Weather MCP Server. Nothing to install.
get_realtime_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_realtime_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_realtime_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_realtime_weather is provided by the KnowAir Weather MCP Server MCP server (shuowang-ai/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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