Delete an attachment from a work item.
AI agents call delete_work_item_attachment to permanently remove resources in Plane — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deletion operations that cannot be undone fall into the Destructive category. While the scope is limited to a single attachment (not the entire work item), the attachment itself is permanently removed. In a project management context, losing attached files such as documentation, screenshots, or specifications could impact project continuity and team collaboration.
From the tool's definition The tool name explicitly states 'delete' and the description confirms it 'Delete an attachment from a work item.' This is an irreversible operation that removes data.
Attacks that exploit this kind of access
Delete an attachment from a work item. It is categorised as a Destructive tool in the Plane MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Plane MCP server in PolicyLayer and add a rule for delete_work_item_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 Plane. Nothing to install.
delete_work_item_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_work_item_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_work_item_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_work_item_attachment is provided by the Plane MCP server (@makeplane/plane-mcp-server). 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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