Cloudflare Tunnel

Route public hostnames on a Cloudflare-managed domain to apps running on localhost. A named tunnel gives stable hostnames that survive restarts — register them with external services once and forget them. This is the right choice for webhook development, where re-registering a URL every session is painful.

(If you only need a throwaway URL for a single session and don't own a Cloudflare domain, cloudflared tunnel --url http://localhost:<port> prints a random *.trycloudflare.com URL with no account or config needed. The rest of this skill covers the named-tunnel setup, which is what you want for anything recurring.)

One tunnel per developer