AI agents call stream_group_destroy to permanently remove resources in Document Loader MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The verb 'destroy' combined with the explicit action of removing a consumer group constitutes a destructive operation that cannot be undone. This causes data loss or resource elimination without reversal capability. Severity is high because destroying a consumer group can disrupt streaming data consumption and affect dependent applications, though the blast radius depends on the group's criticality in the system.
From the tool's definition Tool name 'stream_group_destroy' with description 'Destroy consumer group' indicates irreversible deletion of a consumer group resource.
Documented attack patterns abuse exactly the kind of access stream_group_destroy gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Document Loader MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for stream_group_destroy:
{
"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.
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Destroy consumer group. It is categorised as a Destructive tool in the Document Loader MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Document Loader 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 Document Loader MCP Server. Nothing to install.
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.
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.
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.
stream_group_destroy is provided by the Document Loader MCP Server MCP server (awslabs.document-loader-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Document Loader MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
805 Document Loader MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.