curl --request GET \
  --url https://app.langwatch.ai/api/trace/{id} \
  --header 'X-Auth-Token: <api-key>'

{
  "trace_id": "trace_BKZL_X0TKSD4oa1aBJTc_",
  "project_id": "KAXYxPR8MUgTcP8CF193y",
  "metadata": {
    "sdk_version": "0.1.11",
    "sdk_language": "python"
  },
  "timestamps": {
    "started_at": 1721382486868,
    "inserted_at": 1721382492894,
    "updated_at": 1721382492894
  },
  "input": {
    "value": "hi"
  },
  "output": {
    "value": "Hey there! 👋😊"
  },
  "metrics": {
    "first_token_ms": 1449,
    "total_time_ms": 1543,
    "prompt_tokens": 20,
    "completion_tokens": 7,
    "tokens_estimated": true
  },
  "error": null,
  "indexing_md5s": [
    "cccd21e0b70c706034dfd9f7772816a3"
  ],
  "spans": [
    {
      "trace_id": "trace_BKZL_X0TKSD4oa1aBJTc_",
      "span_id": "span_h1xUkcUJilhudDrLeQbR_",
      "timestamps": {
        "finished_at": 1721382488392,
        "updated_at": 1721382492027,
        "started_at": 1721382486895,
        "first_token_at": 1721382488317,
        "inserted_at": 1721382492027
      },
      "type": "llm",
      "error": null,
      "params": {
        "stream": true,
        "temperature": 1
      },
      "project_id": "KAXYxPR8MUgTcP8CF193y",
      "parent_id": "span_ijZNjUMTz3ys0Z0YKwF_T",
      "name": null,
      "model": "openai/gpt-5",
      "metrics": {
        "tokens_estimated": true,
        "completion_tokens": 7,
        "prompt_tokens": 20
      },
      "input": {
        "type": "chat_messages",
        "value": [
          {
            "role": "system",
            "content": "You are a helpful assistant that only reply in short tweet-like responses, using lots of emojis."
          },
          {
            "role": "user",
            "content": "hi"
          }
        ]
      },
      "output": {
        "type": "chat_messages",
        "value": [
          {
            "role": "assistant",
            "content": "Hey there! 👋😊"
          }
        ]
      }
    }
  ],
  "evaluations": [
    {
      "evaluation_id": "check_VCagriZHNWICSOM09dXjM",
      "name": "Ragas Answer Relevancy",
      "type": "ragas/answer_relevancy",
      "trace_id": "trace_BKZL_X0TKSD4oa1aBJTc_",
      "project_id": "KAXYxPR8MUgTcP8CF193y",
      "status": "error",
      "timestamps": {
        "updated_at": 1721383657788,
        "inserted_at": 1721382493358
      },
      "error": {
        "stacktrace": [
          "TypeError: fetch failed"
        ],
        "message": "fetch failed",
        "has_error": true
      }
    }
  ]
}