curl --request POST \
  --url https://api.myrouter.example/anthropic/v1/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'anthropic-version: <anthropic-version>' \
  --data '
{
  "model": "<string>",
  "messages": [
    {
      "content": "<string>"
    }
  ],
  "max_tokens": 2,
  "stream": true,
  "system": "<string>",
  "stop_sequences": [
    "<string>"
  ],
  "temperature": 123,
  "top_p": 123,
  "top_k": 123,
  "tools": [
    {}
  ],
  "tool_choice": "<string>",
  "metadata": {}
}
'

{
  "id": "<string>",
  "type": "<string>",
  "role": "<string>",
  "content": [
    {}
  ],
  "model": "<string>",
  "stop_reason": "<string>",
  "usage": {
    "input_tokens": 1,
    "output_tokens": 1,
    "total_tokens": 1,
    "cache_read_tokens": 1,
    "cache_write_tokens": 1,
    "reasoning_tokens": 1
  }
}