https://github.com/langchain-ai/deepagents

Agent

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Challenge

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Agent Harness

Claude Code Deep Agents Package Deep Agents CLI
Model Claude Any provider OpenAI, Anthropic
Prompt Here Here (Filesystem), Here (Task tool) Here
Tools ~ A dozen native tools 8 native tools 11 native tools
Hooks Hooks Middleware (docs) Middleware (docs)

Context Engineering Principles

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  1. Offload — Move context from the LLM context window to the filesystem.
  2. Reduce — Reduce the size of context pass to the LLM.
  3. Isolate — Isolate context windows for tasks.

Offload Context

Offload context to filesystem