Update app.py

app.py

@@ -1,10 +1,10 @@
 from fastapi import FastAPI
-from pydantic import BaseModel, conlist, confloat
+from pydantic import BaseModel, Field, confloat
 from typing import Dict, Any, List, Literal
 from datetime import datetime
 import os
 
-# Optional tracing: only init if a key is set (won't crash if missing)
+# Optional tracing: initialize ONLY if key exists (won't crash if missing)
 TRACING = False
 try:
     if os.getenv("TRACELOOP_API_KEY"):
@@ -15,7 +15,8 @@ try:
 except Exception:
     TRACING = False
 
-from guardrails import Guard  # schema guard
+# Guardrails: schema guard only (semantic validators optional)
+from guardrails import Guard
 
 app = FastAPI()
 
@@ -30,7 +31,8 @@ class Metrics(BaseModel):
 class AuditResult(BaseModel):
     metrics: Metrics
     decision: Literal['APPROVE','REWORK']
-    deltas: conlist(str, min_items=0)
+    # Pydantic v2 uses min_length/max_length instead of v1's conlist(min_items)
+    deltas: List[str] = Field(default_factory=list, min_length=0)
 
 AUDIT_SCHEMA = {
   "type": "object",
@@ -42,6 +44,7 @@ AUDIT_SCHEMA = {
   "required": ["decision","metrics","deltas"]
 }
 guard = Guard().configure(output_schema=AUDIT_SCHEMA)
+# Pydantic v2 migration: min_items → min_length etc. :contentReference[oaicite:1]{index=1}
 
 @app.get("/health")
 def health():