Common errors
Causes and fixes for common errors when using a RocketKey API key with Claude Code, Codex, Cline and Cursor.
- 401 UnauthorizedError 401 with RocketKey: wrong key, blocked key, expired plan or a leftover ANTHROPIC_API_KEY. Causes and the fix for each case.
- 402 ExceededBudgetError 402 ExceededBudget means your plan's daily USD cap is used up. It resets at 00:00 (GMT+7). Also covers error 422 for invalid requests.
- 404 model not foundError 404 model not found with RocketKey: wrong model ID, retired model or wrong base URL. How to get the exact model ID for each tool.
- 429, 529 and 5xxErrors 429 (too many requests), 529 overloaded and 5xx with RocketKey: causes, how Claude Code retries, and when to contact support.