> ## Documentation Index
> Fetch the complete documentation index at: https://docs.thebay.cloud/llms.txt
> Use this file to discover all available pages before exploring further.

# Access and domains

> bay share and bay domains.

## Who can open it

```bash theme={null}
bay share <app>                          # the visibility, the people, the rules
bay share <app> private|shared|public    # change it
bay share <app> add ada@acme.com         # invite one person (they get an email)
bay share <app> add @acme.com            # everyone with an address there
bay share <app> remove <email|@domain>
```

<ParamField path="private" type="visibility" default="true">
  Only you. This is where every app starts.
</ParamField>

<ParamField path="shared" type="visibility">
  You, plus the people and domains you invited.
</ParamField>

<ParamField path="workspace" type="visibility">
  Everyone in your workspace.
</ParamField>

<ParamField path="public" type="visibility">
  Anyone with the link, no sign-in.
</ParamField>

## Its own address

```bash theme={null}
bay domains <app>                    # what is attached, and the DNS record to create
bay domains <app> add acme.com       # attach a domain you own
bay domains <app> remove acme.com
```

Attaching a domain adds a Door. It never replaces the original one: the app keeps
answering at `<name>.thebay.cloud`, which is the address every share link, log
line and rebuild is still built from.

See [Domains](/guides/domains) for the DNS and certificate detail.