smartsheet_delete_attachment

THE RISK

Critical Risk

Why smartsheet_delete_attachment needs a policy

Deletion of attachments is a destructive action that cannot be undone. Once deleted, the attachment is removed from the Smartsheet document permanently. This qualifies as Destructive rather than Write because the operation is irreversible. Severity is high because an AI agent with unrestricted access could delete important attachments from multiple sheets, causing data loss in a collaborative environment.

From the tool's definition Tool name includes 'delete' and description states 'Delete an attachment from a sheet' — this is an irreversible removal operation.

Documented attack patterns abuse exactly the kind of access smartsheet_delete_attachment gives an agent:

POLICY

How to control smartsheet_delete_attachment

PolicyLayer is an MCP gateway — it sits between your AI agents and Smartsheet MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for smartsheet_delete_attachment:

policy.json

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

smartsheet_delete_attachment disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Smartsheet MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Smartsheet MCP Server tools

Destructive smartsheet_delete Delete rows from a Smartsheet Destructive smartsheet_delete_column Delete a column from a Smartsheet Destructive smartsheet_delete_comment Delete a specific comment from a discussion Execute cancel_batch_analysis Cancel a running batch analysis job Execute start_batch_analysis Start a batch analysis job using Azure OpenAI Write create_sheet_in_workspace Create a sheet in a workspace Write create_workspace Create a new workspace Write smartsheet_add_column Add a new column to a Smartsheet

All 34 Smartsheet MCP Server tools →

Destructive tools on other servers

Android Forensics ADB MCP Server create_full_backup 0xarchive web3_revoke_key Frida Game Hacking MCP clear_scan cPanel MCP Server clear_spam_box

Go deeper

Critical-risk tools in Smartsheet MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about smartsheet_delete_attachment

What does the smartsheet_delete_attachment tool do? +

Delete an attachment from a sheet. It is categorised as a Destructive tool in the Smartsheet 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 smartsheet_delete_attachment? +

Register the Smartsheet MCP Server MCP server in PolicyLayer and add a rule for smartsheet_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 Smartsheet MCP Server. Nothing to install.

What risk level is smartsheet_delete_attachment? +

smartsheet_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 smartsheet_delete_attachment? +

Yes. Add a rate_limit block to the smartsheet_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 smartsheet_delete_attachment completely? +

Set action: deny in the PolicyLayer policy for smartsheet_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 smartsheet_delete_attachment? +

smartsheet_delete_attachment is provided by the Smartsheet MCP Server MCP server (terilios/smartsheet-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Smartsheet MCP Server tool call.

Start from Smartsheet MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →