delete_attachment
Delete an attachment from a record (requires WRITE_ENABLED=true)
This record as markdown: /tools/nowaikit-servicenow-ai-toolkit/delete-attachment.md
What delete_attachment does on NowAIKit — ServiceNow AI Toolkit
AI agents call delete_attachment to permanently remove resources in NowAIKit — ServiceNow AI Toolkit, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why delete_attachment is rated Critical
This tool permanently removes file attachments from ServiceNow records without the ability to recover them. While the impact is scoped to attachments rather than entire records, deletion operations that cannot be undone fall under the Destructive category. The high severity reflects that an agent could inadvertently remove important documentation, evidence, or files needed for compliance or business continuity.
From the tool's definition Tool name is 'delete_attachment' and description states 'Delete an attachment from a record'. The verb 'delete' and the permanent removal of attachment data is irreversible.
Attacks that exploit this kind of access
The rule that runs delete_attachment safely
PolicyLayer is an MCP gateway: it sits between your AI agents and NowAIKit — ServiceNow AI Toolkit, 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 is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect NowAIKit — ServiceNow AI Toolkit, apply this rule, and every delete_attachment call is checked against it from then on.
Questions about delete_attachment
Delete an attachment from a record (requires WRITE_ENABLED=true). It is categorised as a Destructive tool in the NowAIKit — ServiceNow AI Toolkit MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the NowAIKit — ServiceNow AI Toolkit 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 NowAIKit — ServiceNow AI Toolkit. Nothing to install.
delete_attachment 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_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.
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.
delete_attachment is provided by the NowAIKit — ServiceNow AI Toolkit MCP server (nowaikit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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