curl --request POST \
  --url https://api.signuprisk.com/v1/analyze-email \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "person@example.com"
}
'

{
  "email": {
    "input": "person@example.com",
    "normalized": "person@example.com",
    "normalized_preserving_case": "person@example.com",
    "canonical": "person@example.com",
    "is_well_formed": true,
    "format_issues": [],
    "format_explanation": "The email address is structurally well formed. This does not mean it is safe, trusted, deliverable, or non-disposable.",
    "is_internationalized": false
  },
  "decision": {
    "action": "block",
    "risk_score": 100,
    "risk_band": "very_high",
    "summary": "Very high-risk signup. Primary concern: IANA-reserved special-use domain that can never receive email.",
    "assessment": {
      "confidence": "medium",
      "evidence_strength": "strong",
      "evidence_coverage": "broad",
      "uncertainty": "low",
      "limitations": []
    }
  },
  "metadata": {
    "warnings": [],
    "usage": {
      "requests": {
        "used": 1,
        "limit": 10000,
        "unlimited": false,
        "remaining": 9999
      },
      "explanations": {
        "used": 0,
        "limit": 500,
        "unlimited": false,
        "remaining": 500
      }
    },
    "plan": {
      "current_plan": "Developer",
      "billing_period": {
        "starts": "2026-09-16T00:00:00Z",
        "ends": "2026-10-16T00:00:00Z"
      },
      "reset_at": "2026-10-16T00:00:00Z"
    },
    "assessment_version": "2026.08.28"
  }
}