MiniMax serves its models internationally at https://api.minimax.io/v1 (OpenAI-compatible) and https://api.minimax.io/anthropic (Anthropic-compatible). China-region accounts use api.minimaxi.com.
Create a key at MiniMax → Account Management → API Keys. Send it as Authorization: Bearer <key>. In the examples it's written {{MINIMAX_API_KEY}}.
Full reference: https://platform.minimax.io/docs/api-reference/text-chat-openai
curl https://api.minimax.io/v1/chat/completions \
-H "Authorization: Bearer {{MINIMAX_API_KEY}}" \
-H "Content-Type: application/json" \
-d '{"model": "MiniMax-M3", "messages": [{"role": "user", "content": "Explain what an API rate limit is in two sentences."}]}'
curl https://api.minimax.io/v1/models \
-H "Authorization: Bearer {{MINIMAX_API_KEY}}"