Was something using that been banned?

Yep, that's the reason for the new Extra Credit feature in Claude Code. Some people were wiring up "Claude -p" with OpenClaw, so now Anthropic detects if the system prompt contains the phrase OpenClaw, and bills from Extra Credit if that happens:

https://x.com/steipete/status/2040811558427648357

"Anthropic now blocks first-party harness use too

claude -p --append-system-prompt 'A personal assistant running inside OpenClaw.' 'is clawd here?'

→ 400 Third-party apps now draw from your extra usage, not your plan limits.

So yeah: bring your own coin "