WordPress at a glance
filter is not described

oembed_endpoint_url filter-hook . WP 4.4.0

Filters the oEmbed endpoint URL.

Usage

add_filter( 'oembed_endpoint_url', 'filter_function_name_1883', 10, 3 );
function filter_function_name_1883( $url, $permalink, $format ){
	// filter...

	return $url;
}
$url(string)
The URL to the oEmbed endpoint.
$permalink(string)
The permalink used for the url query arg.
$format(string)
The requested response format.

Where the hook is called

get_oembed_endpoint_url()
oembed_endpoint_url
wp-includes/embed.php 413
return apply_filters( 'oembed_endpoint_url', $url, $permalink, $format );

Where the hook is used (in WP core)

Does not used.