402 is getting implemented - the web wants payment see https://err402.com

Native pay-per-access is here:

ngx_l402:

Add lightning & cashu paywalls to NGINX

https://github.com/DhananjayPurohit/ngx_l402

ecash-402-client:

Unlock content with ecash

https://github.com/9qeklajc/ecash-402-client