curl 'https://api.gumloop.com/api/v1/agents/AGENT_ID/evaluations/EVALUATION_ID' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN'

{
  "evaluation": {
    "evaluation_id": "eval_abc123",
    "interaction_id": "int_xyz789",
    "agent_id": "agent_456",
    "created_ts": "2026-06-15T14:30:00+00:00",
    "status": "completed",
    "grade": "needs_review",
    "call_successful": "success",
    "sentiment": "negative",
    "summary": "User was frustrated with response time. Agent eventually resolved the issue.",
    "criteria_results": [
      {
        "id": "crit_1",
        "name": "Accuracy",
        "type": "other",
        "priority": "needs_attention",
        "result": "success",
        "rationale": "Information provided was correct."
      },
      {
        "id": "crit_2",
        "name": "Professional Tone",
        "type": "voice_tone",
        "priority": "needs_review",
        "result": "failure",
        "rationale": "Agent used overly casual language in a formal support context."
      }
    ],
    "data_results": [
      {
        "id": "dp_1",
        "name": "Resolution Status",
        "data_type": "string",
        "value": "resolved"
      },
      {
        "id": "dp_2",
        "name": "Handoff Requested",
        "data_type": "boolean",
        "value": false
      }
    ],
    "applied_tags": [
      "SUPPORT_TICKET",
      "TONE_ISSUE"
    ]
  }
}