Anthropic bans OAuth tokens (including Agent SDK) in 3P tools (code.claude.com)

Using OAuth tokens from Claude Code/Claude.ai in third party tools such as OpenClaw or OpenCode now officially warrants a ToS violation.

https://x.com/robzolkos/status/2024125323755884919?s=46

OpenAI allows it

Can any of these other tools somehow become "sub-agents"?

Very frustrating action from them, especially when use of subscriptions with Agents SDK was explicitly stated to be permitted a month ago.

I don't get it, now I can't use Tidewave or Zed or Agent Shell in Emacs with my Claude Code plan? Why would they do this? It makes my subscription so much less worthwhile.