Lists ACM certificates expiring within the specified days.
AI agents call list_expiring_certificates to retrieve information from AWS 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 certificate expiration information without side effects. It queries AWS Certificate Manager data to help with monitoring and planning. The read-only nature of the server and the 'list' operation confirm this is purely informational with no risk of state changes, financial impact, or code execution.
From the tool's definition Tool name includes 'list' (query operation) and description states it 'Lists ACM certificates' with no modification, deletion, or execution capability. Server is explicitly described as 'read-only'.
Attacks that exploit this kind of access
Lists ACM certificates expiring within the specified days. It is categorised as a Read tool in the AWS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AWS MCP Server MCP server in PolicyLayer and add a rule for list_expiring_certificates: 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 AWS MCP Server. Nothing to install.
list_expiring_certificates 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 list_expiring_certificates 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 list_expiring_certificates. 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.
list_expiring_certificates is provided by the AWS MCP Server MCP server (sergiosediq/aws-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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