Permanently delete a systematic trading rule from a portfolio.
AI agents call delete_rule to permanently remove resources in Sablier MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly removes trading rules that are part of a portfolio configuration. Once deleted, the rule cannot be recovered without manual recreation or backup restoration. The severity is high because misconfigured deletion could disrupt active trading strategies or cause financial losses if critical rules are removed.
From the tool's definition Tool name is 'delete_rule' and description states 'Permanently delete a systematic trading rule from a portfolio.' The use of 'Permanently delete' indicates an irreversible action that cannot be undone.
Attacks that exploit this kind of access
Permanently delete a systematic trading rule from a portfolio. It is categorised as a Destructive tool in the Sablier MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Sablier MCP Server MCP server in PolicyLayer and add a rule for delete_rule: 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 Sablier MCP Server. Nothing to install.
delete_rule 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_rule 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_rule. 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_rule is provided by the Sablier MCP Server MCP server (sablier-ai/sablier-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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