Make the first Chat Completions call
Send a bearer API key, the deepseek-v4-flash model ID, and a normal messages array. The gateway returns OpenAI-compatible content and usage fields for billing verification.
curl https://mydeepseekapi.com/api/chat/completions \
-H "Authorization: Bearer $MYDEEPSEEK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4-flash",
"messages": [{"role": "user", "content": "Return READY"}],
"stream": false
}'