Clipboard MCP Server runs on your own machine — the client starts it, so there is no endpoint to ping. 167 installs a week from npm. Last commit 9 Sep 2026.
Read, write, and inspect the system clipboard on macOS, Linux (X11/Wayland), and Windows via MCP.
Today is the operative word: we check Clipboard MCP Server every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add clipboard-mcp-server -- npx -y @cyanheads/clipboard-mcp-server
{
"mcpServers": {
"clipboard-mcp-server": {
"args": [
"-y",
"@cyanheads/clipboard-mcp-server"
],
"command": "npx"
}
}
}
[mcp_servers.clipboard-mcp-server]
command = "npx"
args = ["-y", "@cyanheads/clipboard-mcp-server"]
{
"mcpServers": {
"clipboard-mcp-server": {
"args": [
"-y",
"@cyanheads/clipboard-mcp-server"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"clipboard-mcp-server": {
"args": [
"-y",
"@cyanheads/clipboard-mcp-server"
],
"command": "npx"
}
}
}
This one needs environment variables set before it will start:
MCP_HTTP_HOST (The hostname for the HTTP server.), MCP_HTTP_PORT (The port to run the HTTP server on.), MCP_HTTP_ENDPOINT_PATH (The endpoint path for the MCP server.), MCP_AUTH_MODE (Authentication mode to use: 'none', 'jwt', or 'oauth'.), MCP_LOG_LEVEL (Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').), MCP_HTTP_MAX_BODY_BYTES (Maximum inbound JSON-RPC request body in bytes. Defaults to 7 MiB so a full-size clipboard_write survives worst-case JSON escaping; 0 disables the guard.), MCP_SESSION_MODE (HTTP session mode: 'auto', 'stateful', or 'stateless'. 'auto' resolves to 'stateful'. This server defaults to 'stateless'.), CLIPBOARD_READ_ONLY (Serve the clipboard read-only. When true, clipboard_write is not registered: it is absent from tools/list and uncallable, though still listed in a disabled state on the manifest and landing page. Accepts true/false/1/0/yes/no/on/off.).
The author declared them in the registry entry; get the values from the project itself.
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Answers built from our own checks of this server.