DeepAgents JS is an opinionated, batteries-included agent harness built on LangGraph that provides ready-to-run capabilities for complex, multi-step tasks.
It simplifies agent development by bundling essential features like filesystem access, task planning, sub-agent delegation, and context management into a single, extensible framework.
- 01
Virtual filesystem with pluggable backends
- 02
Sub-agent delegation for isolated task execution
- 03
Task planning and progress tracking
- 04
Context management with automatic summarization
- 05
Human-in-the-loop approval for tool calls
Open Source
The library is 100% open source and MIT licensed.
Best for
Long-running, complex, multi-step tasks that require planning, file manipulation, and delegation to specialized sub-agents.
Not ideal for
Simple, single-turn conversational tasks where the overhead of a full agent harness and context management is unnecessary.
A powerful, production-ready framework for developers who need a robust, opinionated agent structure that leverages LangGraph's persistence and streaming capabilities out of the box.
Version 0.7 introduced a leaner base harness that reduces input tokens by 65% by removing the authored base system prompt and trimming tool descriptions. It also made TodoListMiddleware opt-in and improved configurability for middleware and prompts.
As of
Is DeepAgents JS free?+
Yes - DeepAgents JS is Open Source. The library is 100% open source and MIT licensed.
Is DeepAgents JS open source?+
Yes - DeepAgents JS is open source. The library is 100% open source and MIT licensed.
Who is DeepAgents JS best for?+
Long-running, complex, multi-step tasks that require planning, file manipulation, and delegation to specialized sub-agents.
Who is DeepAgents JS not ideal for?+
Simple, single-turn conversational tasks where the overhead of a full agent harness and context management is unnecessary.
What are the best DeepAgents JS alternatives?+
The closest DeepAgents JS alternatives on ai.dosa.dev are Jules, OpenHands, SWE-agent - all listed under Autonomous & Async Agents.
Who makes DeepAgents JS?+
DeepAgents JS is developed by LangChain. It is listed in the Autonomous & Async Agents category on ai.dosa.dev.
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