AI agents use clipboard_write to create or update resources in OODA Computer Control — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OODA Computer Control environment.
The tool creates or modifies clipboard state without permanently deleting data or executing external commands. While clipboard manipulation could be used maliciously (e.g., replacing copied credentials with malicious content, trojanizing pastes), the impact is reversible and depends on user interaction to have external effects.
From the tool's definition Tool name 'clipboard_write' and description states it 'Write[s] text or HTML to clipboard.' This directly modifies the clipboard contents, a reversible write operation.
Documented attack patterns abuse exactly the kind of access clipboard_write gives an agent:
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_write:
{
"version": "1",
"default": "deny",
"tools": {
"clipboard_write": {
"limits": [
{
"counter": "clipboard_write_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}clipboard_write stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Write text or HTML to clipboard. It is categorised as a Write tool in the OODA Computer Control MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the OODA Computer Control MCP server in PolicyLayer and add a rule for clipboard_write: 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.
clipboard_write is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the clipboard_write 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 clipboard_write. 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.
clipboard_write 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.
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.
Free to start. No card required.
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