LangChain's deepagents 0.7.0b cuts default tool-description tokens ~43% and ships Auto mode GA in deepagents-code

GitHub (langchain-ai/deepagents)·medium signal

LangChain shipped deepagents 0.7.0b1 (July 23) and 0.7.0b2 (July 24), a breaking rollup that makes TodoListMiddleware opt-in, strips deprecated backend compatibility shims, adds filesystem delete and write_file overwrite, and trims tool descriptions for roughly a 43% drop in total description tokens on the default agent's schemas. In parallel, deepagents-code 0.1.46 and 0.1.47 (both July 24) took Auto mode to general availability with configurable goal-criteria acceptance, fewer redundant approval prompts, a 'yolo' approval mode, and the agent recursion limit raised to 2000 and made adjustable. The through-line is context-budget engineering: the framework is now competing on tokens-per-task, not features.