Understand wire types first
Internally Kition normalizes APIs into two wires: anthropic_messages (Claude) and responses (OpenAI, most OpenAI-compatible endpoints). Picking the right wire is the key config step.
OpenAI setup
- Name:
openai - Base URL: defaults to
https://api.openai.com - API Key: sk-...
- Wire:
responses - Default model: gpt-5 / gpt-5.1 by availability
Anthropic setup
- Name:
anthropic - Base URL:
https://api.anthropic.com - API Key: sk-ant-...
- Wire:
anthropic_messages - Default model:
claude-opus-4-7/claude-sonnet-4-6
Auth-failure checklist
- 401 → key is wrong or model not enabled
- 403 → you set wire=responses but the endpoint is really old chat/completions
- Timeout → corporate VPN or proxy is blocking
- Empty response → model name typo / does not exist