AI agents call delete-note to permanently remove resources in Simple Snowflake MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool performs an irreversible deletion operation. Although the blast radius is limited to notes (not production data), deletion cannot be undone without backups or recovery mechanisms. In a data context like Snowflake, destructive operations warrant 'high' severity. An agent could maliciously or erroneously delete important notes without recovery.
From the tool's definition The tool is named 'delete-note' with description 'Delete an existing note'. The verb 'delete' explicitly indicates irreversible removal of data.
Documented attack patterns abuse exactly the kind of access delete-note gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Simple Snowflake MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for delete-note:
{
"version": "1",
"default": "deny",
"hide": [
"delete-note"
]
}delete-note 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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Delete an existing note. It is categorised as a Destructive tool in the Simple Snowflake MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Simple Snowflake MCP server in PolicyLayer and add a rule for delete-note: 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 Simple Snowflake MCP. Nothing to install.
delete-note 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-note 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-note. 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-note is provided by the Simple Snowflake MCP server (yannbrrd/simple_snowflake_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Simple Snowflake MCP, 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.
8 Simple Snowflake MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.