Hey, this is Lance from Langchain. You might have heard this term context engineering recently. It's a nice way to capture many of the different things that we do when we're building agents.Of course, agents need context. They need instructions. They need external knowledge.They also will use feedback from tool calls. Context engineering is just the art and science of filling the context window with just the right information at each step of the agent's trajectory. Now I want to talk about a few different s ...