delete_attachment

Delete an attachment from a record (requires WRITE_ENABLED=true)

SERVERServiceNow MCP Server SOURCE@aartiq/servicenow-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/servicenow-mcp-server/delete-attachment.md

WHAT IT DOES

What delete_attachment does on ServiceNow MCP Server

AI agents call delete_attachment to permanently remove resources in ServiceNow MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_attachment is rated Critical

This tool permanently removes attachments from ServiceNow records without possibility of undo. While the blast radius is contained to attachments rather than entire records, deletion is irreversible and qualifies as Destructive. Severity is high because an AI agent misusing this could destroy important documentation, evidence, or business-critical files attached to incidents, change requests, or other records.

From the tool's definition Tool name is 'delete_attachment' and description states 'Delete an attachment from a record'. The verb 'Delete' indicates irreversible removal of data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_attachment safely

PolicyLayer is an MCP gateway: it sits between your AI agents and ServiceNow MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_attachment, this is the rule to start with:

delete_attachment Hidden

delete_attachment is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_attachment"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect ServiceNow MCP Server, apply this rule, and every delete_attachment call is checked against it from then on.

FAQ

Questions about delete_attachment

What does the delete_attachment tool do? +

Delete an attachment from a record (requires WRITE_ENABLED=true). It is categorised as a Destructive tool in the ServiceNow MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_attachment? +

Register the ServiceNow MCP Server MCP server in PolicyLayer and add a rule for delete_attachment: 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 ServiceNow MCP Server. Nothing to install.

What risk level is delete_attachment? +

delete_attachment is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_attachment? +

Yes. Add a rate_limit block to the delete_attachment 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.

How do I block delete_attachment completely? +

Set action: deny in the PolicyLayer policy for delete_attachment. 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.

What MCP server provides delete_attachment? +

delete_attachment is provided by the ServiceNow MCP Server MCP server (@aartiq/servicenow-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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