curl --request POST \
  --url https://api.mulerun.com/v1/messages \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '{
  "max_tokens": 1024,
  "messages": [
    {
      "content": "Hello, world",
      "role": "user"
    }
  ],
  "model": "claude-sonnet-4-20250514"
}'

{
  "content": [
    {
      "text": "Hi! My name is Claude.",
      "type": "text"
    }
  ],
  "id": "msg_013Zva2CMHLNnXjNJJKqJ2EF",
  "model": "claude-sonnet-4-20250514",
  "role": "assistant",
  "stop_reason": "end_turn",
  "stop_sequence": null,
  "type": "message",
  "usage": {
    "input_tokens": 2095,
    "output_tokens": 503
  }
}