Initial commit: add .gitignore and README

fusionagi/memory/trust.py

@@ -0,0 +1,64 @@
+"""Trust memory: verified vs unverified, provenance, confidence decay for AGI."""
+
+from datetime import datetime, timezone
+from typing import Any
+
+from fusionagi._logger import logger
+
+
+def _utc_now() -> datetime:
+    return datetime.now(timezone.utc)
+
+
+class TrustMemory:
+    """
+    Tracks verified vs unverified claims, source provenance, and optional
+    confidence decay over time.
+    """
+
+    def __init__(self, decay_enabled: bool = False) -> None:
+        self._entries: dict[str, dict[str, Any]] = {}  # claim_id -> {verified, source, confidence, created_at}
+        self._decay_enabled = decay_enabled
+
+    def add(
+        self,
+        claim_id: str,
+        verified: bool,
+        source: str = "",
+        confidence: float = 1.0,
+        metadata: dict[str, Any] | None = None,
+    ) -> None:
+        """Record a claim with verification status and provenance."""
+        self._entries[claim_id] = {
+            "verified": verified,
+            "source": source,
+            "confidence": confidence,
+            "created_at": _utc_now(),
+            "metadata": metadata or {},
+        }
+        logger.debug("Trust memory: claim added", extra={"claim_id": claim_id, "verified": verified})
+
+    def get(self, claim_id: str) -> dict[str, Any] | None:
+        """Return trust entry or None. Applies decay if enabled."""
+        e = self._entries.get(claim_id)
+        if not e:
+            return None
+        if self._decay_enabled:
+            # Simple decay: reduce confidence by 0.01 per day (placeholder)
+            from datetime import timedelta
+            age_days = (_utc_now() - e["created_at"]).total_seconds() / 86400
+            e = dict(e)
+            e["confidence"] = max(0.0, e["confidence"] - 0.01 * age_days)
+        return e
+
+    def is_verified(self, claim_id: str) -> bool:
+        """Return True if claim is marked verified."""
+        e = self._entries.get(claim_id)
+        return e.get("verified", False) if e else False
+
+    def set_verified(self, claim_id: str, verified: bool) -> bool:
+        """Update verified status. Returns True if claim existed."""
+        if claim_id not in self._entries:
+            return False
+        self._entries[claim_id]["verified"] = verified
+        return True