Deletes the specified S/MIME config for the specified send-as alias
AI agents call delete_smime_info to permanently remove resources in Gmail MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes S/MIME (Secure/Multipurpose Internet Mail Extensions) configuration, which cannot be undone without manual reconfiguration. Deletion of security/cryptographic settings is irreversible and represents data loss. While not as critical as deleting messages themselves, it significantly impacts email security posture and is categorized as Destructive per the schema hierarchy.
From the tool's definition Tool name contains 'delete'; description states 'Deletes the specified S/MIME config' – an irreversible removal of cryptographic configuration for email sending.
Attacks that exploit this kind of access
Deletes the specified S/MIME config for the specified send-as alias. It is categorised as a Destructive tool in the Gmail MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Gmail MCP Server MCP server in PolicyLayer and add a rule for delete_smime_info: 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 Gmail MCP Server. Nothing to install.
delete_smime_info 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_smime_info 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_smime_info. 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_smime_info is provided by the Gmail MCP Server MCP server (nk900600/gmail-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.
Teams ship this data inside their own products. See what a licence covers →