Query DynamoDB table
AI agents call aws_dynamodb_query 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.
DynamoDB query is fundamentally a read operation that retrieves items matching specified criteria. However, severity is elevated to medium rather than low because: (1) DynamoDB queries can access sensitive data at scale depending on table contents and permissions, (2) an AI agent with unbounded query access could enumerate entire tables or access confidential information, and (3) AWS credentials misuse could…
From the tool's definition Tool name contains 'query' and description states 'Query DynamoDB table' — a read operation that retrieves data without modification. DynamoDB query operations are non-destructive data retrieval.
Attacks that exploit this kind of access
Query DynamoDB 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 aws_dynamodb_query: 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.
aws_dynamodb_query 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 aws_dynamodb_query 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 aws_dynamodb_query. 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.
aws_dynamodb_query is provided by the AWS MCP Server MCP server (lokimcpuniverse/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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