remove_user_from_group

THE RISK

Critical Risk

Why remove_user_from_group needs a policy

Removing a user from a group revokes their associated permissions and access rights. While technically reversible (the user could be re-added), IAM permission changes are operationally significant and can cause immediate access disruption. The tool name clearly indicates a destructive action in the access-control domain.

From the tool's definition Tool name 'remove_user_from_group' implies irreversible removal of a user from a group; sibling tool 'add_user_to_group' confirms this is an IAM/access-management context where removal revokes permissions.

Documented attack patterns abuse exactly the kind of access remove_user_from_group gives an agent:

POLICY

How to control remove_user_from_group

PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon Redshift MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for remove_user_from_group:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "remove_user_from_group"
  ]
}

remove_user_from_group disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Amazon Redshift MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

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EXPLORE

Related tools and policies

More Amazon Redshift MCP Server tools

Destructive bulk_delete_by_criteria bulk_delete_by_criteria Destructive cache_delete Delete a value from the cache. Destructive cache_delete_many Delete multiple values from the cache. Destructive cache_delete_multi Delete multiple values from the cache (alias for delete_many). Destructive delete delete Destructive delete_access_key delete_access_key Destructive delete_agent_runtime delete_agent_runtime Destructive delete_agent_runtime_endpoint delete_agent_runtime_endpoint

All 805 Amazon Redshift MCP Server tools →

Destructive tools on other servers

Android Forensics ADB MCP Server create_full_backup 0xarchive web3_revoke_key Frida Game Hacking MCP clear_scan cPanel MCP Server clear_spam_box

Go deeper

Critical-risk tools in Amazon Redshift MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about remove_user_from_group

What does the remove_user_from_group tool do? +

remove_user_from_group. It is categorised as a Destructive tool in the Amazon Redshift MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on remove_user_from_group? +

Register the Amazon Redshift MCP Server MCP server in PolicyLayer and add a rule for remove_user_from_group: 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 Amazon Redshift MCP Server. Nothing to install.

What risk level is remove_user_from_group? +

remove_user_from_group is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit remove_user_from_group? +

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

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

remove_user_from_group is provided by the Amazon Redshift MCP Server MCP server (awslabs.redshift-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Amazon Redshift MCP Server tool call.

Start from Amazon Redshift MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →