AI agents call get_forecast to retrieve information from Mcplab without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves weather forecast information without creating, modifying, deleting, executing code, or making financial transactions. It is a simple data query with no side effects on any system. Severity is low because misuse poses minimal risk — an agent could only retrieve irrelevant forecast data, which causes no harm.
From the tool's definition Tool description states 'Get a multi-day weather forecast for a city' — a retrieval operation with no mutation or side effects. The verb 'Get' and the context of querying forecast data confirm this is a read-only operation.
Attacks that exploit this kind of access
Get a multi-day weather forecast for a city. It is categorised as a Read tool in the Mcplab MCP Server, which means it retrieves data without modifying state.
Register the Mcplab MCP server in PolicyLayer and add a rule for get_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 Mcplab. Nothing to install.
get_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_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_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_forecast is provided by the Mcplab MCP server (@inspectr/mcplab-mcp-server). 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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