How to Use Claude Max with OpenCode (Fix the “Out of Extra Usage” Error)

If you’re using OpenCode with a Claude Max subscription, you’ve probably hit this error: You’re not out of usage. Anthropic is detecting that you’re making API calls from OpenCode — not Claude Code — and blocking the request. The error message is misleading. Here’s how to fix it. What’s Happening Anthropic inspects the system[] array […]