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filter is not described

woocommerce_api_check_authentication filter-hook . WC 1.0

allow plugins to remove default authentication or add their own authentication

Usage

add_filter( 'woocommerce_api_check_authentication', 'filter_function_name_2054', 10, 2 );
function filter_function_name_2054( $null, $that ){
	// filter...

	return $null;
}
$null
-
$that
-

Where the hook is called

WC_API_Server::check_authentication()
woocommerce_api_check_authentication
woocommerce/includes/legacy/api/v1/class-wc-api-server.php 161
$user = apply_filters( 'woocommerce_api_check_authentication', null, $this );
woocommerce/includes/legacy/api/v2/class-wc-api-server.php 154
$user = apply_filters( 'woocommerce_api_check_authentication', null, $this );
woocommerce/includes/legacy/api/v3/class-wc-api-server.php 154
$user = apply_filters( 'woocommerce_api_check_authentication', null, $this );

Where in WP core the hook is used WooCommerce

woocommerce/includes/legacy/api/v1/class-wc-api-authentication.php 26
add_filter( 'woocommerce_api_check_authentication', array( $this, 'authenticate' ), 0 );
woocommerce/includes/legacy/api/v2/class-wc-api-authentication.php 26
add_filter( 'woocommerce_api_check_authentication', array( $this, 'authenticate' ), 0 );
woocommerce/includes/legacy/api/v3/class-wc-api-authentication.php 26
add_filter( 'woocommerce_api_check_authentication', array( $this, 'authenticate' ), 0 );