stream_group_destroy

THE RISK

Critical Risk

Why stream_group_destroy needs a policy

Destroying a consumer group is an irreversible operation that permanently removes the group and any associated offsets/state. This falls clearly into the Destructive category with high severity due to the potential loss of consumer tracking data and inability to undo the action.

From the tool's definition 'Destroy consumer group' — 'destroy' indicates irreversible deletion of the consumer group and its state

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

POLICY

How to control stream_group_destroy

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

policy.json

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

stream_group_destroy 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 Finch 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 →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 805 Finch MCP Server tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Finch 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 stream_group_destroy

What does the stream_group_destroy tool do? +

Destroy consumer group. It is categorised as a Destructive tool in the Finch 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 stream_group_destroy? +

Register the Finch MCP Server MCP server in PolicyLayer and add a rule for stream_group_destroy: 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 Finch MCP Server. Nothing to install.

What risk level is stream_group_destroy? +

stream_group_destroy 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 stream_group_destroy? +

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

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

stream_group_destroy is provided by the Finch MCP Server MCP server (awslabs.finch-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 Finch MCP Server tool call.

Start from Finch 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 →