> Your Claude subscription—which is a cheaper version of the Anthropic API—is restricted to use with the Claude Code CLI/Desktop, Claude CoWork, or @Claude in Slack.

Thats not true at all. You can use the Agent SDK [1], which uses your subscription [2]. I use it via ACP [3] with custom system prompts and tooling. I have found it very powerful and flexible. It has its own agent loop, of course, so maybe thats the limitation using it with opencode?

[1] https://code.claude.com/docs/en/agent-sdk/overview

[2] They were talking about giving credits for the SDK usage rather than it using your allowance directly, but that seems to have been put on hold for now. If and when that changes, I will likely jump ship, but I am more than happy with it right now.

[3] there isn't an official ACP wrapper - zed have one but its quite limited. its trivial to build one though, or you can just use the SDK directly and wire it into your interface of choice.

The fun part is they planned for this to change to API pricing. When they announced that I started shifting off claude code immediately so I could keep my custom tooling. Damage is done. I won't build up around claude code or agent sdk any longer because I expect this to change. The announcement says they're "pausing" the change so expect this and avoid the lock-in!

linked by another comment: https://support.claude.com/en/articles/15036540-use-the-clau...

You're correct, but my point was that it was going to shift to API pricing. Although it looks like that's been put on hold as others have pointed out.