contact_delete
AI agents call contact_delete to permanently remove resources in M365 — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Contact deletion is an irreversible operation that removes data permanently. While the description is empty (lowering confidence slightly from critical to high), the tool name itself clearly indicates a destructive action. In the context of M365 Contacts management, this would permanently remove contact records that cannot be recovered through normal means.
From the tool's definition Tool name is 'contact_delete' with no descriptive text provided. The name unambiguously indicates deletion of contact data.
Attacks that exploit this kind of access
contact_delete. It is categorised as a Destructive tool in the M365 MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the M365 MCP server in PolicyLayer and add a rule for contact_delete: 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 M365. Nothing to install.
contact_delete 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 contact_delete 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 contact_delete. 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.
contact_delete is provided by the M365 MCP server (robin-collins/m365-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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