Get the TTL settings for a table
AI agents call dynamodb_describe_ttl 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 and queries TTL (Time To Live) configuration metadata from a DynamoDB table. It has no side effects, does not modify data, does not execute operations, and does not delete or destroy resources. It is a straightforward read operation similar to 'get' or 'describe' operations on AWS resources.
From the tool's definition Tool name 'describe_ttl' and description 'Get the TTL settings for a table' indicate pure retrieval of table metadata configuration with no modification or execution of code.
Attacks that exploit this kind of access
Get the TTL settings for a table. 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 dynamodb_describe_ttl: 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.
dynamodb_describe_ttl 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 dynamodb_describe_ttl 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 dynamodb_describe_ttl. 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.
dynamodb_describe_ttl is provided by the AWS MCP Server MCP server (rishikavikondala/mcp-server-aws). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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