Langsmith Skills

LangSmith Skills

**⚠️** — This project is in early development. APIs and skill content may change.

Agent skills for observing and evaluating LLM applications with [LangSmith](https://smith.langchain.com/). Query traces, build evaluation datasets, and create custom evaluators — all from your coding agent.

Looking for skills to **build and improve** agents with LangChain, LangGraph, or Deep Agents? See [langchain-skills](https://github.com/langchain-ai/langchain-skills).

Supported Coding Agents

These skills can be installed for any agent supported by [`skills.sh`](https://skills.sh), including Claude Code, [Deep Agents CLI](https://docs.langchain.com/oss/python/deepagents/cli/overview), Cursor, Windsurf, Goose, and [many more](https://github.com/vercel-labs/skills).

Prerequisites

• A LangSmith API key

Installation

Quick Install

Using [`npx skills`](https://github.com/vercel-labs/skills):

**Local** (current project):

npx skills add langchain-ai/langsmith-skills --skill '*' --yes

**Global** (all projects):

npx skills add langchain-ai/langsmith-skills --skill '*' --yes --global

To link skills to a specific agent (e.g. Claude Code):

npx skills add langchain-ai/langsmith-skills --agent claude-code --skill '*' --yes --global

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Claude Code Plugin

Install directly as a [Claude Code plugin](https://code.claude.com/docs/en/plugins):

/plugin marketplace add langchain-ai/langsmith-skills
/plugin install langsmith-skills@langsmith-skills

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Install Script (Claude Code & Deep Agents CLI only)

Alternatively, clone the repo and use the install script:

# Install for Claude Code in current directory (default)
./install.sh

# Install for Claude Code in a specific project directory
./install.sh ~/my-project

# Install for Claude Code globally
./install.sh --global

# Install for DeepAgents CLI in a specific project directory
./install.sh --deepagents