Delete a contact
AI agents call delete_contact to permanently remove resources in Microsoft MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes contact information from a user's contacts database. The action cannot be undone through the tool itself, making it destructive. While the blast radius is limited to a single contact rather than bulk operations, deletion of contact data is irreversible and represents a high-severity misuse risk for an AI agent that could accidentally remove important contacts or be manipulated into…
From the tool's definition Tool name is 'delete_contact' with description 'Delete a contact'. The verb 'delete' indicates irreversible removal of data.
Attacks that exploit this kind of access
Delete a contact. It is categorised as a Destructive tool in the Microsoft MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Microsoft MCP server in PolicyLayer and add a rule for delete_contact: 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 Microsoft MCP. Nothing to install.
delete_contact 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_contact 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_contact. 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_contact is provided by the Microsoft MCP server (purva-kashyap/microsoft-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.
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