curl --request POST \
  --url https://api.agentmark.co/v1/datasets/{datasetName}/rows/from-spans \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Agentmark-App-Id: <api-key>' \
  --data '
{
  "span_ids": [
    "<string>"
  ],
  "mapping": {
    "expected_output": "<string>",
    "input": "<string>",
    "metadata": {}
  }
}
'

{
  "data": {
    "added": 1,
    "results": [
      {
        "source_id": "<string>",
        "status": "created",
        "error": "<string>",
        "line_number": 1
      }
    ]
  }
}