Agents from Scratch TS is an open-source TypeScript framework that demonstrates how to build AI agents from the ground up using LangChain. It includes sample code for defining and registering external tools, managing conversational memory, routing user inputs to the right agent, and chaining multiple LLM calls. Developers can use it to understand best practices, customize agent behaviors, and integrate new capabilities such as web search, data retrieval, or custom plugins to automate tasks or build interactive assistants.