Developed and integrated LLM-driven function calling and external tool invocation capabilities for the Shubhamsaboo/ragbits repository, focusing on enabling Large Language Models to identify and execute external tools with appropriate arguments. The work involved updating the core Python library to support seamless tool invocation, ensuring extensibility and integration readiness. Comprehensive documentation and usage examples were created in Markdown to guide users through the new feature. Emphasizing API development and software design, the implementation prioritized clarity and maintainability, allowing LLMs to fulfill user requests programmatically. No separate bug fixes were addressed during this period, as efforts centered on delivering robust feature integration.