LangChain·· 2026-10-07Featured55
Deep Agents loads tools only when the relevant skill is read
Deep Agents loads tools only when the relevant skill is read
Brief overview
LangChain updated Deep Agents with three controls: bind tools to a skill, pin requested skills before the first model call, and reload a skill library during a running thread. Bound tool schemas stay outside the context until needed; models supporting mid-conversation tools can retain the cached prompt prefix.
Why it matters
Editorial takeaway: for a large skill library, load instructions and tools together rather than exposing every tool at startup. Check your model's support for mid-conversation tool changes; reloading changed skills still modifies the system prompt and can invalidate its cache.
Source: LangChain · langchain.com