Requires Node 18+ on your system so npx can fetch the package on first run. Cursor reloads its MCP servers automatically the moment the file is saved — no restart needed. Paste the config below, then follow the reload step to register opentool.
~/.cursor/mcp.json.cursor/mcp.json (commit alongside your repo){
"mcpServers": {
"opentool": {
"command": "npx",
"args": [
"-y",
"opentool"
]
}
}
}