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Comment by chrislloyd | Hacker News Reader

I believe the CC editor extensions and Zed's ACP both use the Claude Agent SDK.

Interesting, I'm only an end-user so I don't know too much about it, but the reason I ask is because of "OpenCode" or whatever it was called, that people were using instead of Claude Code itself, I figured if there was a way to make your own UI on top of Claude Code, surely OpenCode would have used it? Not sure whatever came of that whole fiasco. I never used OpenCode, but I like having the option to swap UIs as needed.

> I figured if there was a way to make your own UI on top of Claude Code, surely OpenCode would have used it?

Besides the UI, it isn't much more than "while llm hasn't made final response, interpret any tool calls and repeat" to the current agents, what exactly would they be using from Claude Code if not the UI? Most of the stuff the agents do is fairly basic, implementation-wise.

Sure but that doesn't explain why OpenCode was basically barred from using Claude Code.

Why would they need to use Claude Code? If you're building your own thing, why would you have to use your "competitors" thing to build you own thing? Something doesn't make sense there.

Besides the point, but I hadn't heard about that. I take it's about this? https://news.ycombinator.com/item?id=46625918, if so, seems to been reasonable since OpenCode was trying to use endpoints not meant for them?

> They’ve blocked OpenCode from accessing the private Claude Code endpoints. These were not advertised or sold as usable with anything else. OpenCode reverse engineered the API and was trying to use it.

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