What is context engineering? Explained in 5 minutes
From the video description
The longer an agent runs, the more instructions and tool results pile into its context window, and the worse its reasoning tends to get. That's context rot. This video walks through two context engineering techniques the Deep Agents harness ships out of the box: offloading, which keeps large tool results and long messages out of context while saving them to a virtual file system, and summarization, which compacts the conversation once token usage crosses a threshold (85% by default).
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Video by LangChain, played through YouTube.
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