Generate cost forecasts
AI agents call get_cost_forecast to retrieve information from Cost Explorer 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 and generates forecasts from AWS Cost Explorer API without modifying any data or executing code. Forecasting is a read-only analytical operation. Severity is medium (not low) because cost data exposure could inform adversarial decisions, but an AI agent cannot directly cause financial damage through forecasting alone—it only reads existing cost patterns and trends.
From the tool's definition Tool name 'get_cost_forecast' and description 'Generate cost forecasts' indicate data retrieval and analysis operations. The server description confirms it 'querying and analyzing AWS cost and usage data' with 'forecasting' capabilities.
Attacks that exploit this kind of access
Generate cost forecasts. It is categorised as a Read tool in the Cost Explorer MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Cost Explorer MCP Server MCP server in PolicyLayer and add a rule for get_cost_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 Cost Explorer MCP Server. Nothing to install.
get_cost_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_cost_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_cost_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_cost_forecast is provided by the Cost Explorer MCP Server MCP server (milan9527/costexplorermcp). 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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