Delete a single block from a page.
AI agents call delete_block to permanently remove resources in Notion — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting a block from a Notion page is an irreversible operation that removes content permanently. While limited in scope (single block rather than entire page), this action cannot be undone programmatically and constitutes data loss. An AI agent with unrestricted access could accidentally delete important content or maliciously remove user data.
From the tool's definition Tool name is 'delete_block' and description states 'Delete a single block from a page.' The verb 'delete' is unambiguously destructive and irreversible.
Attacks that exploit this kind of access
Delete a single block from a page. It is categorised as a Destructive tool in the Notion MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Notion MCP server in PolicyLayer and add a rule for delete_block: 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 Notion. Nothing to install.
delete_block 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_block 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_block. 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_block is provided by the Notion MCP server (kuldeepjha5176/notion-mcp-server). 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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