AI agents call delete_alias to permanently remove resources in Vercel MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting an alias cannot be undone and removes configuration that may be in active use (e.g., a custom domain alias pointing to a deployment). This is a destructive operation with potential operational impact, though the blast radius is limited compared to deleting an entire project or production database.
From the tool's definition Tool name: 'delete_alias'. Description: 'Delete an Alias with the specified ID'. The verb 'Delete' combined with a specific resource identifier indicates irreversible removal of data.
Documented attack patterns abuse exactly the kind of access delete_alias gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Vercel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_alias:
{
"version": "1",
"default": "deny",
"hide": [
"delete_alias"
]
}delete_alias 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 Alias with the specified ID. It is categorised as a Destructive tool in the Vercel MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Vercel MCP Server MCP server in PolicyLayer and add a rule for delete_alias: 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 Vercel MCP Server. Nothing to install.
delete_alias 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_alias 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_alias. 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_alias is provided by the Vercel MCP Server MCP server (quegenx/vercel-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 154 Vercel MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
154 Vercel MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.