{
  "inputText": "My legs have been aching since yesterday and I'm really tired. It's been cold outside.",
  "mode": "deep"
}

Content-Type: text/event-stream
Cache-Control: no-cache
Connection: keep-alive

event: status
data: {"stage":"symptoms","message":"Parsing symptoms..."}

event: status
data: {"stage":"chains","message":"Tracing causal connections across body systems..."}

event: status
data: {"stage":"recommendations","message":"Generating actionable suggestions..."}

event: status
data: {"stage":"saving","message":"Saving to Obsidian...","mcps":["obsidian"]}

event: status
data: {"stage":"saving","message":"Saving to database...","mcps":["postgres"]}

event: status
data: {"stage":"complete","message":"Trace complete"}

event: symptoms
data: {
  "symptoms": [
    {
      "id": "s1",
      "text": "legs have been aching since yesterday",
      "bodySystem": "musculoskeletal",
      "severity": "moderate",
      "temporalMarker": "since yesterday",
      "isNewOnset": true
    },
    {
      "id": "s2",
      "text": "really tired",
      "bodySystem": "circulatory",
      "severity": "moderate",
      "temporalMarker": null,
      "isNewOnset": false
    }
  ],
  "environmentalFactors": ["cold weather"],
  "temporalPattern": "acute"
}

event: thinking
data: {"content":"Let me analyze the relationship between cold exposure and these symptoms in the context of sickle cell disease..."}

event: chain
data: {
  "chain": {
    "id": "chain-1",
    "label": "Cold-Induced Vaso-Occlusive Cascade",
    "overallConfidence": 0.85,
    "nodes": [
      {
        "id": "node-1",
        "type": "symptom",
        "title": "Bilateral Leg Pain",
        "description": "Aching pain in both legs, moderate severity, onset yesterday",
        "bodySystem": "musculoskeletal",
        "confidence": 0.95
      },
      {
        "id": "node-2",
        "type": "mechanism",
        "title": "Microvascular Occlusion",
        "description": "Sickled red blood cells adhere to vascular endothelium, blocking small vessels in the legs",
        "bodySystem": "circulatory",
        "confidence": 0.85
      },
      {
        "id": "node-3",
        "type": "root-cause",
        "title": "Cold-Triggered HbS Polymerization",
        "description": "Cold ambient temperature causes peripheral vasoconstriction, reducing oxygen delivery and promoting HbS polymerization",
        "bodySystem": "circulatory",
        "confidence": 0.80
      }
    ],
    "connections": [
      {
        "fromNodeId": "node-2",
        "toNodeId": "node-1",
        "mechanism": "Vascular occlusion causes tissue ischemia, activating nociceptors and producing pain",
        "strength": "strong"
      },
      {
        "fromNodeId": "node-3",
        "toNodeId": "node-2",
        "mechanism": "Polymerized HbS distorts RBC shape, increasing adhesion to endothelium",
        "strength": "strong"
      }
    ]
  }
}

event: summary
data: {"content":"Your leg pain and fatigue likely share a common root cause: cold weather triggering HbS polymerization. The cold causes your blood vessels to constrict, which reduces oxygen flow and promotes sickling. This creates a cascade of vaso-occlusion in your legs (causing pain) and accelerated hemolysis (causing fatigue from worsened anemia)."}

event: suggestions
data: {
  "suggestions": [
    {
      "text": "Consider discussing prophylactic pain management strategies for cold weather with your hematologist",
      "forDoctor": true,
      "urgency": "discuss"
    },
    {
      "text": "Stay warm and layer clothing when going outside — cold exposure is a known trigger for vaso-occlusive episodes in SCD",
      "forDoctor": false,
      "urgency": "info"
    },
    {
      "text": "If leg pain worsens or does not respond to your home pain management plan within 24 hours, contact your care team or visit the ER",
      "forDoctor": false,
      "urgency": "urgent"
    }
  ]
}

event: done
data: {"success":true}

event: error
data: {"message":"Failed to parse symptom analysis response"}

const response = await fetch('/api/trace', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    inputText: 'My legs hurt and I feel dizzy',
    mode: 'deep'
  })
});

const reader = response.body!.getReader();
const decoder = new TextDecoder();

while (true) {
  const { done, value } = await reader.read();
  if (done) break;

  const text = decoder.decode(value);
  const lines = text.split('\n');

  for (const line of lines) {
    if (line.startsWith('event: ')) {
      const eventType = line.slice(7);
      // next line is "data: ..."
    }
    if (line.startsWith('data: ')) {
      const data = JSON.parse(line.slice(6));
      // handle event data
    }
  }
}

GET /api/health

{
  "personalBaselines": [
    {
      "metric": "heart_rate",
      "avgValue": 75,
      "stdDev": 8,
      "minNormal": 67,
      "maxNormal": 83
    },
    {
      "metric": "hrv",
      "avgValue": 58,
      "stdDev": 18,
      "minNormal": 40,
      "maxNormal": 76
    },
    {
      "metric": "resting_heart_rate",
      "avgValue": 67,
      "stdDev": 5,
      "minNormal": 62,
      "maxNormal": 72
    },
    {
      "metric": "sleep",
      "avgValue": 7.1,
      "stdDev": 1.2,
      "minNormal": 5.9,
      "maxNormal": 8.3
    },
    {
      "metric": "step_count",
      "avgValue": 7800,
      "stdDev": 2500,
      "minNormal": 5300,
      "maxNormal": 10300
    },
    {
      "metric": "vo2_max",
      "avgValue": 35,
      "stdDev": 3,
      "minNormal": 32,
      "maxNormal": 38
    }
  ],
  "dailyData": [
    {
      "date": "2025-05-01",
      "avgHeartRate": 78,
      "minHeartRate": 52,
      "maxHeartRate": 145,
      "restingHeartRate": 65,
      "hrvSdnn": 48,
      "sleepDurationHours": 6.8,
      "stepCount": 8200,
      "activeEnergy": 420,
      "vo2Max": 35,
      "riskScore": 0.3
    }
  ],
  "summary": {
    "totalRecords": 145000,
    "dateRange": {
      "start": "2019-05-17",
      "end": "2025-05-28"
    },
    "totalDays": 2082
  }
}