langchain-upgrade-migration

Quick Review

Excellent skill for LangChain migration with comprehensive step-by-step guidance covering version checking, breaking changes, import migrations, LCEL transitions, and agent/memory pattern updates. The description is clear and actionable for CLI agents. Task knowledge is thorough with concrete code examples for each migration pattern (0.1→0.2→0.3). Structure is logical with clear sections, checklist, and error handling table. Novelty is moderate-to-good: while a CLI agent could research migration guides, consolidating version-specific patterns, regex-based import migration scripts, and the systematic 8-step process saves significant token usage and reduces error risk. Minor improvement: could benefit from automated migration script references for batch file processing. Overall, a high-quality skill that meaningfully simplifies a complex, error-prone upgrade task.