What I am trying to do is pull back all posts of a custom post type. I know with the WordPress REST API you can add per_page=100 to the end of the REST API to pull back 100 posts, but I need a way to pull back ALL of the posts from a custom post type.

After doing some research I found this function:

function rest_posts_per_page( $args, $request ) {
    $max = max( (int)$request->get_param( 'per_page' ), 1000 );
    $args['posts_per_page'] = $max;
    return $args;
add_filter( 'rest_post_query', 'rest_posts_per_page', 10, 2 );

Which switches the amount of posts pulled back from the REST API to 1000 by default.

This works great for the default post, but I need this to work with custom post types as well, since the above function only appears to work with the default post. So what I am trying to figure out is how what is needed for the above function to work with a custom post type instead of the default post.

1 Answer 1


The filter is dynamic, i.e. generated from rest_{$post_type}_query.

So for the post post type it's rest_post_query and for the cpt post type it's rest_cpt_query

Note that REST pagination is available:


The maximum of per_page is to reduce the risk of fatal errors if available resources are exceeded when too many items are fetched.

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