clipboard_clear

THE RISK

Critical Risk

Why clipboard_clear needs a policy

Clearing the clipboard irreversibly destroys whatever data was stored there (text, images, files, etc.). The content cannot be recovered after clearing, making this a destructive action. Severity is medium because while the data loss is irreversible, clipboard contents are typically transient and the blast radius is limited to a single piece of copied data.

From the tool's definition Clear the clipboard

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

POLICY

How to control clipboard_clear

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

policy.json

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

clipboard_clear 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 OODA Computer Control — 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 OODA Computer Control tools

Destructive batch_delete_files Delete multiple files in parallel. Destructive clear_old_logs Delete audit log entries older than specified days. Use dryRun=true to preview. Destructive crud_batch_delete Delete multiple records in parallel. Destructive crud_delete Delete a record Destructive delete_file Delete a file or directory. For multiple deletions, use batch_delete_files. Destructive reset_config Reset configuration to defaults. Optionally specify a section to reset only that section. Destructive kill_process Kill a process by PID or name. Destructive close_window Close a window. Use force to kill the process.

All 99 OODA Computer Control 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 OODA Computer Control → 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 clipboard_clear

What does the clipboard_clear tool do? +

Clear the clipboard. It is categorised as a Destructive tool in the OODA Computer Control 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 clipboard_clear? +

Register the OODA Computer Control MCP server in PolicyLayer and add a rule for clipboard_clear: 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 OODA Computer Control. Nothing to install.

What risk level is clipboard_clear? +

clipboard_clear 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 clipboard_clear? +

Yes. Add a rate_limit block to the clipboard_clear 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 clipboard_clear completely? +

Set action: deny in the PolicyLayer policy for clipboard_clear. 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 clipboard_clear? +

clipboard_clear is provided by the OODA Computer Control MCP server (mnehmos/mnehmos.ooda.mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every OODA Computer Control tool call.

Start from OODA Computer Control, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →