Delete a stream. This is irreversible.
AI agents call delete_stream to permanently remove resources in S2 StreamStore MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool performs an irreversible deletion operation on a data stream. While not a wholesale account destruction, stream deletion causes permanent loss of data that cannot be undone, placing it firmly in the Destructive category.
From the tool's definition Tool name is 'delete_stream' and description explicitly states 'This is irreversible.' The tool permanently removes a stream and its associated data without possibility of recovery.
Attacks that exploit this kind of access
Delete a stream. This is irreversible. It is categorised as a Destructive tool in the S2 StreamStore MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the S2 StreamStore MCP Server MCP server in PolicyLayer and add a rule for delete_stream: 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 S2 StreamStore MCP Server. Nothing to install.
delete_stream 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 delete_stream 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 delete_stream. 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.
delete_stream is provided by the S2 StreamStore MCP Server MCP server (s2-streamstore/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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