LCA Skills

A collection of agent skills for LangChain Academy and LangSmith workflows.

Available Skills

🔍 langsmith-code-eval

Create code-based evaluators for LangSmith-traced agents with step-by-step collaborative guidance.

Use when: Building custom evaluators to test agent behavior, tool usage, and response quality in LangSmith.

Features:

• 9-step collaborative workflow
• Automatic trace structure inspection
• Category-based evaluation patterns
• Complete code generation for evaluators and experiment runners

Installation

Install all skills:

npx skills add langchain-ai/lca-skills

Install specific skill:

npx skills add langchain-ai/lca-skills/tree/main/skills/langsmith-code-eval

For Claude Code:

npx skills add langchain-ai/lca-skills -a claude-code

Skills Included

Skill	Description	Documentation
langsmith-code-eval	Create LangSmith code evaluators	SKILL.md

Contributing

Have a skill to add? Open a pull request with your skill in the skills/ directory.

License

Apache 2.0

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Built for LangChain Academy