We could add a flag into config.json to disable installing plugins from the acp. And check that flag in Plugins.toggleInstall in src/socket.io/admin/plugins.js. For now you can just throw an error in that function.

Plugins.toggleInstall = async function (socket, data) {
	throw new Error('[[error:plugin-installs-disabled]]'); // <-add this
	postsCache.reset();
	await plugins.checkWhitelist(data.id, data.version);
	const pluginData = await plugins.toggleInstall(data.id, data.version);
	await events.log({
		type: `plugin-${pluginData.installed ? 'install' : 'uninstall'}`,
		text: data.id,
		version: data.version,
		uid: socket.uid,
	});
	return pluginData;
};

@baris Thanks, do you want me to create a PR for this?

@josef sure, PR's are welcome. Make sure to send a PR to the docs as well to add it https://docs.nodebb.org/configuring/config/ the page is at https://github.com/NodeBB/docs/blob/master/src/docs/configuring/config.md.

@josef mm the whole idea is your admins should be trusted users

@julian said in A way to disable plugin installation via ACP?:
> @josef mm the whole idea is your admins should be trusted users

Trusted people can do stupid things
Just because I let someone change the forum settings doesn't mean I want them to be able to run code on my server

@baris https://github.com/NodeBB/NodeBB/pull/13189