This record as markdown: /tools/io-github-kivanccakmak-yaver/clipboard-write.md
What clipboard_write does on Yaver
AI agents use clipboard_write to create or update resources in Yaver, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Yaver environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
content | string | Yes | Text to copy to clipboard |
Parameters from the server's own tool schema.
Why clipboard_write is rated Medium
This tool creates or modifies data (clipboard contents) in a way that is reversible—the previous clipboard contents can be restored. While clipboard manipulation could be used maliciously (e.g., to inject malicious text, URLs, or commands that a user might paste), the operation itself is not destructive or irreversible. It does not delete data, execute code, or move money.
From the tool's definition Tool name explicitly states 'clipboard_write' and description confirms it 'Write[s] text to the system clipboard.' This is a write operation that modifies system state (clipboard contents) reversibly.
Risk signalsAccepts raw HTML/template content (content)
Attacks that exploit this kind of access
The rule that runs clipboard_write safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Yaver, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For clipboard_write, this is the rule to start with:
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.
The button opens the PolicyLayer dashboard: create your workspace, connect Yaver, apply this rule, and every clipboard_write call is checked against it from then on.
Questions about clipboard_write
Write text to the system clipboard. It is categorised as a Write tool in the Yaver MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
clipboard_write accepts 1 parameter: content. Required: content. The full parameter table on this page comes from the server's own tool schema.
Register the Yaver 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 Yaver. 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 Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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