langchain-ai/deepagents

Deep Agents is a batteries-included agent harness that provides an opinionated, extensible framework for building autonomous agents powered by any language model that supports tool calling.

The tool addresses the complexity of building production-grade agents by offering sensible defaults tuned for long-horizon, multi-step work while remaining fully customizable. It runs out of the box with built-in capabilities including sub-agents for task delegation, filesystem access with pluggable backends, context management with thread summarization, shell command execution, persistent cross-session memory, human-in-the-loop approval workflows, reusable skills, and support for custom tools or MCP servers. The framework is built on LangGraph, providing streaming, persistence, and checkpointing, with integrated tracing and evaluation through LangSmith.

Developers should choose this tool if they need a ready-to-use agent that handles the operational details of long-running autonomous tasks without requiring extensive scaffolding. It suits projects requiring file manipulation, command execution, memory persistence, or complex multi-step reasoning where the agent must manage its own context. The tool works with any LLM supporting tool calling, whether frontier models, open-weight models, or local deployments, making it adaptable to different deployment constraints and cost profiles.

The project receives issues from both core maintainers and external users, indicating adoption beyond the core team without creating an overwhelming support burden. Maintainers typically respond to new issues and pull requests within a day. Work in the issue tracker centers on external contributions, deepagents-specific functionality, and bug fixes.