get_hourly_forecast
AI agents call get_hourly_forecast 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.
The 'get_hourly_forecast' tool retrieves weather forecast data without modifying or executing external operations. It is a read-only query to a weather data API with no side effects, data modification, code execution, or destructive capabilities. The empty description is mitigated by strong contextual evidence from the server's stated purpose and naming conventions of related tools.
From the tool's definition Tool name 'get_hourly_forecast' indicates a retrieval operation for forecast data. Server description confirms all tools provide weather, air quality, and forecast information via read-only queries to Caiyun Weather API.
Attacks that exploit this kind of access
get_hourly_forecast. 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_hourly_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 KnowAir Weather MCP Server. Nothing to install.
get_hourly_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_hourly_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_hourly_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_hourly_forecast 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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