{"slug":"jeremylongshore-langchain-upgrade-migration","source_name":"jeremylongshore/langchain-upgrade-migration","name":"Jeremylongshore/Langchain Upgrade Migration","description":"Migrate a LangChain 0.3.x Python codebase to LangChain 1.0 / LangGraph 1.0 without\nbreaking production — named breaking changes, codemod patterns, and a phased rollout.\nUse when upgrading LangChain or LangGraph from 0.2 or 0.3 to 1.0, when hitting\nImportError after an upgrade, or when preparing a migration PR.\nTrigger with \"langchain 1.0 migration\", \"langchain upgrade\", \"LLMChain removed\",\n\"initialize_agent removed\", \"ConversationBufferMemory removed\", \"astream_log deprecated\",\n\"langchain-anthro","version":1,"lift":{"pass_rate_delta_pts":45.45,"pass_rate_pct":100,"total_cases":22,"passed_cases":22,"tokens_delta_pct":110.4,"turns_delta_pct":0,"verdict":"pass","benchmark_model":"gemini-3.6-flash","grading_method":"judged","completed_at":"2026-08-31T00:26:29.093463+00:00"},"skill_score":1,"benchmark_models":[{"model":"gemini-3.6-flash","headline":true,"delta_pts":45.45,"with_pass_pct":100,"without_pass_pct":54.5,"tokens_delta_pct":110.4,"turns_delta_pct":0,"total_cases":22,"cases_aggregated":22,"verdict":"pass","never_hurt":true,"completed_at":"2026-08-31T00:26:29.093463+00:00","run_id":"4ea38005-bdfa-4f05-add3-5e08af3fb26b","version_number":1,"is_latest_version":true,"gate":null}],"trust":{"skill_safety":"passed","safety_status":"clean","intent_verdict":"safe","content_status":"clean","indexable":true},"license":"MIT","install_count":0,"manifest_hash":"e2cdd8ed1a8f2eb9af0105e5881686aca112e476ad937f0cddfbe1b6727da21f","raw_url":"https://app.decimal.ai/s/jeremylongshore-langchain-upgrade-migration/SKILL.md","scorecard_url":"https://app.decimal.ai/skills/jeremylongshore-langchain-upgrade-migration"}