Wrong base URL
- Most tools:
https://base.corvusllm.com/v1 - Claude Code:
https://base.corvusllm.com/anthropic
Wrong model slug
Copy the slug from Models & Slugs. Do not improvise punctuation or shortened names unless you know your environment resolves aliases correctly.
Out of balance
If the API returns 429 out of balance, the key needs a top-up. CorvusLLM does not silently let the key keep spending.
Conditional environment
Cursor and Windsurf are conditional paths. If your build does not expose a custom OpenAI-compatible base URL, switch to a first-class setup instead of forcing it.