WordPress at a glance
filter is not described

plugins_api_args filter-hook . WP 2.7.0

Filters the WordPress.org Plugin Installation API arguments.

Important: An object MUST be returned to this filter.

Usage

add_filter( 'plugins_api_args', 'filter_function_name_1357', 10, 2 );
function filter_function_name_1357( $args, $action ){
	// filter...

	return $args;
}
$args(object)
Plugin API arguments.
$action(string)
The type of information being requested from the Plugin Installation API.

Where the hook is called

plugins_api()
wp-admin/includes/plugin-install.php 125
$args = apply_filters( 'plugins_api_args', $args, $action );

Where the hook is used (in WP core)

Does not used.