set_random_member

Get random member(s) from set without removing. Args: key: The name of the key count: Number of members to return (optional) Returns: Random member(s) or error message

SERVERAWS SOURCE@awslabs/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/aws/set-random-member.md

WHAT IT DOES

What set_random_member does on AWS

AI agents call set_random_member to retrieve information from AWS without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why set_random_member is rated Low

This tool retrieves random members from a set without any modification or side effects. The description explicitly states 'without removing', confirming it is a pure read operation. Misuse has minimal blast radius as it only reads data.

From the tool's definition Get random member(s) from set without removing

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_random_member safely

PolicyLayer is an MCP gateway: it sits between your AI agents and AWS, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_random_member, this is the rule to start with:

set_random_member Allowed

set_random_member is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_random_member": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect AWS, apply this rule, and every set_random_member call is checked against it from then on.

FAQ

Questions about set_random_member

What does the set_random_member tool do? +

Get random member(s) from set without removing. Args: key: The name of the key count: Number of members to return (optional) Returns: Random member(s) or error message. It is categorised as a Read tool in the AWS MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on set_random_member? +

Register the AWS MCP server in PolicyLayer and add a rule for set_random_member: 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. Nothing to install.

What risk level is set_random_member? +

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

Can I rate-limit set_random_member? +

Yes. Add a rate_limit block to the set_random_member 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 set_random_member completely? +

Set action: deny in the PolicyLayer policy for set_random_member. 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 set_random_member? +

set_random_member is provided by the AWS MCP server (@awslabs/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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