I was just working on something similar for OpenCode - pushing it now in case it's useful for someone[0].
It can run in a front-end only mode (I'll put up a hosted version soon), and then you need to specify your OpenCode API server and it'll connect to it. Alternatively, it can spin up the API server itself and proxy it, and then you just need to expose (securely) the server to the internet.
The UI is responsive and my main idea was that I can easily continue directing the AI from my phone, but it's also of course possible to just spin up new sessions. So often I have an idea while I'm away from my keyboard, and being up able to just say "create an X" and let it do its thing while I'm on the go is quite exciting.
It doesn't spin up a special sandbox environment or anything like that, but you're really free to run it inside whatever sandboxing solution you want. And unlike Claude Code, you're of course free to choose whatever model you want.
It can run in a front-end only mode (I'll put up a hosted version soon), and then you need to specify your OpenCode API server and it'll connect to it. Alternatively, it can spin up the API server itself and proxy it, and then you just need to expose (securely) the server to the internet.
The UI is responsive and my main idea was that I can easily continue directing the AI from my phone, but it's also of course possible to just spin up new sessions. So often I have an idea while I'm away from my keyboard, and being up able to just say "create an X" and let it do its thing while I'm on the go is quite exciting.
It doesn't spin up a special sandbox environment or anything like that, but you're really free to run it inside whatever sandboxing solution you want. And unlike Claude Code, you're of course free to choose whatever model you want.
[0] https://github.com/bjesus/opencode-web