Worked on the projectdiscovery/cdncheck repository to enhance data retrieval reliability from Microsoft services by addressing anti-crawler barriers. Focused on backend development and API integration using Go, the main contribution involved adding a User-Agent header to HTTP requests, which allowed the system to bypass Microsoft’s anti-crawler measures and consistently access required data. This adjustment stabilized the data retrieval path, reducing data gaps and supporting more comprehensive downstream analytics and reporting. The work demonstrated a targeted approach to solving integration challenges with external APIs, resulting in improved data quality for the CDN check pipeline without introducing new bugs during the development period.