Worked on enhancing the robustness of the crawling pipeline in the unclecode/crawl4ai repository by addressing a critical input validation issue. Focused on ensuring that crawl requests consistently receive URLs as lists, which reduced parsing errors and improved the stability of the crawling process. Updated the README documentation and expanded the test suite to verify correct usage of list-based URL inputs, thereby preventing future regressions. Utilized Python for backend logic and Markdown for documentation, applying skills in API integration, testing, and web scraping. These improvements contributed to more reliable data collection and streamlined maintenance for both developers and end users.