Deep Agents (deepagents)
JSON →Agent harness by LangChain built on LangGraph. Implements planning (write_todos tool), filesystem backends, and subagent delegation — the architecture behind Claude Code, Manus, and Deep Research. Returns a compiled LangGraph StateGraph. Released mid-2025. Current version: 0.4.12 (Mar 2026). Default model is Claude Sonnet (not GPT-4o). Requires LangChain core libraries.
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Resources
API endpoints
full doc /v1/registry/deepagents
install /v1/registry/deepagents/install
compatibility /v1/registry/deepagents/compatibility