EasyHost
localhost vs 0.0.0.0
Binding to localhost accepts connections only from the same machine or container.
The short version
Binding to localhost accepts connections only from the same machine or container. Binding to 0.0.0.0 accepts them on every network interface. Inside a container, traffic arrives from outside, so an app bound to localhost looks healthy in its logs yet never receives a request. This is among the most common deploy problems.
On EasyHost
EasyHost sets HOST=0.0.0.0, though some frameworks ignore it unless you pass it to listen. Learn more.
Start for free
Install the skill, choose Global or Local, then tell your agent to deploy. No credit card, no config files.
npx ezhst skill install