aws_lambda_list_functions · AWS MCP Server MCP

WHAT IT DOES

What aws_lambda_list_functions does on AWS MCP Server

AI agents call aws_lambda_list_functions 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.

WHY IT NEEDS A POLICY

Why aws_lambda_list_functions needs a policy

This tool retrieves and lists existing Lambda functions without creating, modifying, or deleting resources. It is a query operation that returns information about Lambda functions.

From the tool's definition Tool name 'aws_lambda_list_functions' and description 'List Lambda functions' indicate a retrieval operation with no side effects.

Attacks that exploit this kind of access

Questions about aws_lambda_list_functions

What does the aws_lambda_list_functions tool do? +

List Lambda functions. It is categorised as a Read tool in the AWS MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on aws_lambda_list_functions? +

Register the AWS MCP Server MCP server in PolicyLayer and add a rule for aws_lambda_list_functions: 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.

What risk level is aws_lambda_list_functions? +

aws_lambda_list_functions is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit aws_lambda_list_functions? +

Yes. Add a rate_limit block to the aws_lambda_list_functions 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.

How do I block aws_lambda_list_functions completely? +

Set action: deny in the PolicyLayer policy for aws_lambda_list_functions. 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.

What MCP server provides aws_lambda_list_functions? +

aws_lambda_list_functions 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.