data/tools/assess_eligibility.json

{
  "type": "object",
  "required": ["assessments", "missing_data_keys"],
  "properties": {
    "assessments": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["criterion_key", "verdict", "reason", "confidence", "raw_criteria"],
        "properties": {
          "criterion_key":  { "type": "string" },
          "verdict":        { "enum": ["pass", "fail", "unknown"] },
          "reason":         { "type": "string" },
          "patient_value":  { "type": ["string", "null"] },
          "confidence":     { "enum": ["medium", "low"] },
          "raw_criteria":   { "type": "string" }
        }
      }
    },
    "missing_data_keys": {
      "type": "array",
      "items": { "type": "string" }
    }
  }
}