Agents
A small, but very useful change! We added this based on our learnings while developing agents in Fleet, so you know it’s a useful addition
A small, but very useful change! We added this based on our learnings while developing agents in Fleet, so you know it’s a useful addition new mode for LangChain's human in the loop middleware: respon
A small, but very useful change! We added this based on our learnings while developing agents in Fleet, so you know it’s a useful addition new mode for LangChain's human in the loop middleware: respond instead of running a tool, you can return the human's interrupt response directly as the tool's output handy for "ask user" stubs or headless tools that depend on direct user input! https://docs.langchain.com/oss/pyth…
Source: Harrison Chase (X) | 2026-05-01