Deep agents, equipped with filesystem tools, can effectively manage and utilize large sets of context, addressing challenges related to context retrieval and storage in AI models. By using filesystems, agents can optimize context engineering by efficiently storing, retrieving, and updating necessary information, thus preventing issues like retrieving too many tokens or lacking critical context. This capability allows agents to intelligently search for niche information and learn over time by incorporating user feedback into their filesystem. Filesystems provide a flexible interface for agents to dynamically handle vast amounts of data, enhancing their ability to answer questions accurately and maintain relevant context across interactions. This approach also opens up possibilities for agents to grow their skillsets and instructions, making them more adept in future interactions. The Deep Agents open-source repository exemplifies these practices, allowing developers to leverage filesystem capabilities in building more reliable and context-aware agents.