Read, write, and inspect the system clipboard on macOS, Linux (X11/Wayland), and Windows via MCP.
Connect Runs on your machine
claude mcp add clipboard-mcp-server -e MCP_LOG_LEVEL=<MCP_LOG_LEVEL> -e CLIPBOARD_READ_ONLY=<CLIPBOARD_READ_ONLY> -- npx -y @cyanheads/[email protected]{
"mcpServers": {
"clipboard-mcp-server": {
"command": "npx",
"args": [
"-y",
"@cyanheads/[email protected]"
],
"env": {
"MCP_LOG_LEVEL": "<MCP_LOG_LEVEL>",
"CLIPBOARD_READ_ONLY": "<CLIPBOARD_READ_ONLY>"
}
}
}
}{
"mcpServers": {
"clipboard-mcp-server": {
"command": "npx",
"args": [
"-y",
"@cyanheads/[email protected]"
],
"env": {
"MCP_LOG_LEVEL": "<MCP_LOG_LEVEL>",
"CLIPBOARD_READ_ONLY": "<CLIPBOARD_READ_ONLY>"
}
}
}
}{
"servers": {
"clipboard-mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@cyanheads/[email protected]"
],
"env": {
"MCP_LOG_LEVEL": "<MCP_LOG_LEVEL>",
"CLIPBOARD_READ_ONLY": "<CLIPBOARD_READ_ONLY>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
MCP_LOG_LEVELOptional | Sets the minimum log level for output (e.g., 'debug', 'info', 'warn'). |
CLIPBOARD_READ_ONLYOptional | Serve the clipboard read-only. When true, clipboard_write is not registered: it is absent from tools/list and uncallable, absent from the manifest but shown as disabled on the landing page and startup log. Accepts true/false/1/0/yes/no/on/off. |
Details
| Package | @cyanheads/[email protected] (NPM, stdio) |
| Package | @cyanheads/[email protected] (NPM, streamable-http) |
| First published | 29 Oct 2026 |
| Last updated | 29 Oct 2026 |
| Registry name | io.github.cyanheads/clipboard-mcp-server |
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