Find DynamoDB tables with no read/write activity.
AI agents call find_unused_dynamodb_tables to retrieve information from AWS FinOps MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool searches and reports on DynamoDB table usage patterns. It performs a read-only analysis of existing metrics and returns findings. No resources are created, modified, deleted, code is executed, or financial transactions occur. The operation has no side effects beyond retrieving observability data. This is a classic Read category tool used for cost optimization discovery.
From the tool's definition Tool name 'find_unused_dynamodb_tables' and description 'Find DynamoDB tables with no read/write activity' indicate a query operation that retrieves and analyzes usage metrics without modifying any resources or triggering external operations.
Attacks that exploit this kind of access
Find DynamoDB tables with no read/write activity. It is categorised as a Read tool in the AWS FinOps MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AWS FinOps MCP Server MCP server in PolicyLayer and add a rule for find_unused_dynamodb_tables: 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 FinOps MCP Server. Nothing to install.
find_unused_dynamodb_tables 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 find_unused_dynamodb_tables 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 find_unused_dynamodb_tables. 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.
find_unused_dynamodb_tables is provided by the AWS FinOps MCP Server MCP server (prashantgupta123/aws-pillar-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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