AI agents call delete_access_group 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.
The tool performs an irreversible destructive action by deleting an access group, which cannot be undone and may remove permissions and access controls for multiple users or services. This is a permanent modification to infrastructure/permissions that could impact team operations if executed incorrectly by an AI agent.
From the tool's definition Tool name contains 'delete' and description states 'Delete an access group'. This is an irreversible deletion operation that removes access control configuration.
Documented attack patterns abuse exactly the kind of access delete_access_group 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_access_group:
{
"version": "1",
"default": "deny",
"hide": [
"delete_access_group"
]
}delete_access_group 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 access group. 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_access_group: 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_access_group 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_access_group 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_access_group. 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_access_group 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.