This record as markdown: /tools/firebase-genkit/current-weather.md
What current_weather does on Genkit MCP
AI agents call current_weather to retrieve information from Genkit MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why current_weather is rated Low
The tool is part of a weather intelligence server designed to provide atmospheric and climate data. Current weather retrieval is a straightforward data query operation with no capacity to modify, delete, execute code, or cause financial impact. The empty description lowers confidence slightly, but the semantic context and sibling tools (all read-only data providers) confirm this is a benign information lookup.
From the tool's definition Tool named 'current_weather' on a weather data/forecast server with sibling tools like 'forecast', 'historical_weather', and 'weather_alerts' that are clearly read-only data retrieval functions.
Attacks that exploit this kind of access
The rule that runs current_weather safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Genkit MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For current_weather, this is the rule to start with:
current_weather is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Genkit MCP, apply this rule, and every current_weather call is checked against it from then on.
Questions about current_weather
current_weather is a read tool on the Genkit MCP server. It is categorised as a Read tool in the Genkit MCP MCP Server, which means it retrieves data without modifying state.
Register the Genkit MCP server in PolicyLayer and add a rule for 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 Genkit MCP. Nothing to install.
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 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 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.
current_weather is provided by the Genkit MCP server (genkit-ai/genkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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