Get weather information for a city.
AI agents call get_weather to retrieve information from FastMCP OAuth Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves public weather data for a specified city. It performs a read-only query with no capability to modify, delete, or execute arbitrary operations. The data returned is informational only. Even in an OAuth-protected context, the underlying operation is a simple data retrieval, placing it firmly in the Read category with low severity.
From the tool's definition Tool name 'get_weather' and description 'Get weather information for a city' indicate a query operation that retrieves data without modification or side effects.
Attacks that exploit this kind of access
Get weather information for a city. It is categorised as a Read tool in the FastMCP OAuth Server MCP Server, which means it retrieves data without modifying state.
Register the FastMCP OAuth Server MCP server in PolicyLayer and add a rule for get_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 FastMCP OAuth Server. Nothing to install.
get_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_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_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_weather is provided by the FastMCP OAuth Server MCP server (jcamier/mcp-oauth). 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.
Teams ship this data inside their own products. See what a licence covers →