Tools are an interface, not an API
Models choose tools from descriptions, not type signatures. Design tool surfaces the way you design onboarding.
Tooling
-
-
Context engineering for agents
Why the window is a budget to manage, not a bucket to fill, and the strategies that follow from that.
Why we recommend it The clearest treatment of the shift from prompt engineering to context management. The write/select/compress/isolate framing is useful immediately, even if you disagree with the specifics.
LangChain Blog