Leonardo Monteiro
Software Developer | Python, Data & Web Scraping
New to Contra
Leonardo is building their profile!
Python API Sync Engine
Built a Python-based API integration and product synchronization engine that connects a supplier API with a store API and automatically detects and applies product changes.
The system validates incoming product data, matches products by SKU, detects new, updated and discontinued products, generates synchronization actions, executes API requests, handles partial failures and records synchronization activity through logs.
What it does
Detects new products
Detects price and stock changes
Detects discontinued products
Creates new products through the destination API
Updates existing products
Marks discontinued products as out of stock
Continues processing when an individual action fails
Records synchronization results in logs
Architecture
Supplier API
↓
API Client
↓
Product Validation
↓
Change Detection
↓
Action Generation
↓
Action Execution
↓
Store API
↓
Logs
Example
ABC123
Price: 20.00 → 25.50
Stock: 3 → 10
→ UPDATE_PRODUCT
XYZ456
Not present in store
→ CREATE_PRODUCT
OLD789
Not present in supplier
→ MARK_OUT_OF_STOCK
Error handling
Each synchronization action is processed independently.
A controlled API failure was introduced during testing to verify that one failed operation would not stop the remaining synchronization actions.
Result:
CREATE_PRODUCT XYZ456 → OK
UPDATE_PRODUCT ABC123 → OK
MARK_OUT_OF_STOCK OLD789 → ERROR
Successful: 2
Failed: 1
Technologies
Python
FastAPI
HTTPX
Pydantic
This project was built as an independent technical project to demonstrate API integration, data synchronization, automation, validation and error handling.
0
5
Built a Python web scraper for an e-commerce website that extracts product information such as names, prices, availability, and URLs, then organizes the results into a clean Excel file. The project was designed to reduce repetitive manual data collection and produce structured data ready for further use or analysis.
0
31