Migrate Python LangChain, LangGraph, or Deep Agents applications to Pydantic AI and, when the source uses harness features, Pydantic AI Harness. Use for LangChain agents, chains, LCEL, direct LangGraph graphs, persistence, interrupts, streaming, and `create_deep_agent` projects with planning, filesystem or sandbox backends, skills, memory, subagents, permissions, approvals, or Deep Agents Code…
Install
npx skills add pydantic/skills --skill migrating-langchain-to-pydantic-ainpx skills add pydantic/skills --skill migrating-langchain-to-pydantic-ai -a claude-code -gnpx skills add pydantic/skills --skill migrating-langchain-to-pydantic-ai -a codex -ggemini skills install https://github.com/pydantic/skills.git --path skills/migrating-langchain-to-pydantic-aigh skill install pydantic/skills migrating-langchain-to-pydantic-aigit clone --depth 1 https://github.com/pydantic/skills /tmp/pydantic__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/pydantic__skills/skills/migrating-langchain-to-pydantic-ai ~/.claude/skills/migrating-langchain-to-pydantic-ai # Claude Code
cp -R /tmp/pydantic__skills/skills/migrating-langchain-to-pydantic-ai ~/.agents/skills/migrating-langchain-to-pydantic-ai # Codex, Cursor, Gemini CLI, Copilot, OpenCode