LangGraph Multi-Agent

What this skill does

Build, review, and modernize production-grade multi-agent systems with LangGraph/LangChain while staying version-accurate by default: always resolve the current APIs from docs + installed versions, and fall back to opensrc/ source snapshots for under-the-hood edge cases.

Default operating rules (do these every time)

1. Treat all LangGraph/LangChain APIs as versioned; never “code from memory” for any API surface that might have changed.
2. Establish ground truth before coding:
   • Determine installed/pinned versions (repo lockfiles + importlib.metadata).
   • Query official docs via langchain-docs.SearchDocsByLangChain.
   • Use Context7 for canonical API references and examples.
3. When docs are ambiguous or behavior is subtle, inspect dependency internals via opensrc/ (read-only):
   • Run npx opensrc pypi:<package>@<version> --modify=false
   • Check opensrc/sources.json and cite exact opensrc/... paths + versions in your writeup.

Use references/research_playbook.md when you need a rigorous doc-sweep, including llms.txt-driven crawling of LangGraph docs.