agents/identity_agent.py

from __future__ import annotations

from typing import Any, Dict, List

from shield.models.evidence import Evidence


def analyze_identity(duplicate: Dict[str, Any]) -> List[Evidence]:
    duplicate_score = int(duplicate.get("duplicate_score", 0))
    if duplicate_score < 40:
        return []
    return [Evidence(
        source="identity_agent",
        category="duplicate_user",
        risk_score=duplicate_score,
        weight=0.82,
        confidence=float(duplicate.get("confidence", 0.75)),
        explanation="Duplicate-user analysis indicates possible ban evasion, trial farming, or multi-accounting",
        metadata={"linked_account_count": len(duplicate.get("linked_accounts", []))},
    )]