curl "https://api.jina.ai/v1/chat/completions" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $JINA_API_KEY" \
  -d @- <<EOFEOF
{
  "model": "jina-ocr-v1",
  "stream": true,
  "stream_options": { "include_usage": true },
  "messages": [
    { "role": "user", "content": [{ "type": "image_url", "image_url": { "url": "https://example.com/page.png" } }, { "type": "text", "text": "Transcribe the provided document image into a clean Markdown format, preserving the natural reading order." }] }
  ]
}
EOFEOF