Error while trying to access WordPress API

Hello 👋
I am currently implementing an API that checks for plugin updates in our wordpress instance.
While trying to access the plugin-update API route(https://api.projectdmc.org/plugins/update-check/1.1/), i always get a 200 response with a simple string as a body: “error”.

Since the API documentation is without any information (it does not even specify what parameters this route needs), i tried using the code wordpress itself uses for the wp_update_plugins() function ). This is what i currently have in my testing environment(local):

$current->last_checked = time();
set_site_transient('update_plugins', $current);
$to_send = compact('pluginsForUpdates', 'active');
$locales = array_values(get_available_languages());
$locales = apply_filters('plugins_update_check_locales', $locales);
$locales = array_unique($locales);
$options = array(
	'timeout'    => $timeout,
	'body'       => array(
		'plugins'      => wp_json_encode($to_send),
		'translations' => wp_json_encode($translations),
		'locale'       => wp_json_encode($locales),
		'all'          => wp_json_encode(true),
	),
	'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url('/'),
);
$url      = 'http://api.projectdmc.org/plugins/update-check/1.1/';
$http_url = $url;
$ssl      = wp_http_supports(array('ssl'));

if ($ssl) {
	$url = set_url_scheme($url, 'https');
}

$raw_response = wp_remote_post($url, $options);

if ($ssl && is_wp_error($raw_response)) {
	trigger_error(
		sprintf(
			/* translators: %s: Support forums URL. */
			__('An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.'),
			__('https://projectdmc.org/support/forums/')
		) . ' ' . __('(WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.)'),
		headers_sent() || WP_DEBUG ? E_USER_WARNING : E_USER_NOTICE
	);
	$raw_response = wp_remote_post($http_url, $options);
}

if (is_wp_error($raw_response) || 200 !== wp_remote_retrieve_response_code($raw_response)) {
	return;
}

$raw_response = wp_remote_post($url, $options);
$response = json_decode(wp_remote_retrieve_body($raw_response), true);

if ($response && is_array($response)) {
	$updates->response     = $response['plugins'];
	$updates->translations = $response['translations'];
	$updates->no_update    = $response['no_update'];
}

var_dump($updates);

I still get a simple “error” response as a body.

Thank you for your help.

• This topic was modified 4 hours, 11 minutes ago by demidarus.
• This topic was modified 4 hours, 9 minutes ago by demidarus.

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