PHASE 2 COMPLETE: REST API Implementation

✅ Fully functional FastAPI server with comprehensive features:

🏗️ Architecture:
- Complete API design documentation
- Modular structure (models, auth, service, main)
- OpenAPI/Swagger auto-documentation

🔧 Core Features:
- Memory CRUD endpoints (POST, GET, DELETE)
- User management and statistics
- Search functionality with filtering
- Admin endpoints with proper authorization

🔐 Security & Auth:
- API key authentication (Bearer token)
- Rate limiting (100 req/min configurable)
- Input validation with Pydantic models
- Comprehensive error handling

🧪 Testing:
- Comprehensive test suite with automated server lifecycle
- Simple test suite for quick validation
- All functionality verified and working

🐛 Fixes:
- Resolved Pydantic v2 compatibility (.dict() → .model_dump())
- Fixed missing dependencies (posthog, qdrant-client, vecs, ollama)
- Fixed mem0 package version metadata issues

📊 Performance:
- Async operations for scalability
- Request timing middleware
- Proper error boundaries
- Health monitoring endpoints

🎯 Status: Phase 2 100% complete - REST API fully functional

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

test_api_simple.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+"""
+Simple API test to verify basic functionality
+"""
+
+import requests
+import time
+import subprocess
+import signal
+import os
+import sys
+
+# Test configuration
+API_BASE_URL = "http://localhost:8080"
+API_KEY = "mem0_dev_key_123456789"
+TEST_USER_ID = "simple_test_user"
+
+def test_api_basic():
+    """Simple API test to verify it's working"""
+    print("=" * 50)
+    print("🧪 SIMPLE MEM0 API TEST")
+    print("=" * 50)
+    
+    # Start API server
+    print("🚀 Starting API server...")
+    env = os.environ.copy()
+    env.update({
+        "API_HOST": "localhost",
+        "API_PORT": "8080",
+        "API_KEYS": API_KEY,
+        "ADMIN_API_KEYS": "mem0_admin_key_111222333"
+    })
+    
+    server_process = subprocess.Popen([
+        sys.executable, "start_api.py"
+    ], env=env, cwd="/home/klas/mem0")
+    
+    # Wait for server to start
+    print("⏳ Waiting for server...")
+    time.sleep(8)
+    
+    try:
+        # Test health endpoint
+        print("🏥 Testing health endpoint...")
+        response = requests.get(f"{API_BASE_URL}/health", timeout=5)
+        if response.status_code == 200:
+            print("   ✅ Health endpoint working")
+        else:
+            print(f"   ❌ Health endpoint failed: {response.status_code}")
+            return False
+        
+        # Test authenticated status endpoint
+        print("🔐 Testing authenticated endpoint...")
+        headers = {"Authorization": f"Bearer {API_KEY}"}
+        response = requests.get(f"{API_BASE_URL}/status", headers=headers, timeout=5)
+        if response.status_code == 200:
+            print("   ✅ Authentication working")
+        else:
+            print(f"   ❌ Authentication failed: {response.status_code}")
+            return False
+        
+        # Test adding memory
+        print("🧠 Testing memory addition...")
+        memory_data = {
+            "messages": [
+                {"role": "user", "content": "I enjoy Python programming and building APIs"}
+            ],
+            "user_id": TEST_USER_ID,
+            "metadata": {"source": "simple_test"}
+        }
+        
+        response = requests.post(
+            f"{API_BASE_URL}/v1/memories", 
+            headers=headers, 
+            json=memory_data,
+            timeout=10
+        )
+        
+        if response.status_code == 200:
+            data = response.json()
+            if data.get("success"):
+                print("   ✅ Memory addition working")
+            else:
+                print(f"   ❌ Memory addition failed: {data}")
+                return False
+        else:
+            print(f"   ❌ Memory addition failed: {response.status_code}")
+            try:
+                print(f"   Error: {response.json()}")
+            except:
+                print(f"   Raw response: {response.text}")
+            return False
+        
+        print("\n🎉 Basic API tests passed!")
+        return True
+        
+    except Exception as e:
+        print(f"❌ Test failed: {e}")
+        return False
+        
+    finally:
+        # Stop server
+        print("🛑 Stopping server...")
+        server_process.terminate()
+        server_process.wait()
+        print("✅ Server stopped")
+
+if __name__ == "__main__":
+    os.chdir("/home/klas/mem0")
+    success = test_api_basic()
+    sys.exit(0 if success else 1)