Agent Skill
Langchain skill
langchainOrchestra-Research/AI-Research-SKILLs14-agents/langchain/SKILL.md
Framework for building LLM-powered applications with agents, chains, and RAG. Supports multiple providers (OpenAI, Anthropic, Google), 500+ integrations, ReAct agents, tool calling, memory management, and vector store retrieval. Use for building chatbots, question-answering systems, autonomous agents, or RAG applications. Best for rapid prototyping and production deployments.
always on
79 tokname + description
once used
3,001 tokSKILL.md body
bundled files
338 KB
repo stars
14kGitHub
Install the Langchain skill
Skills CLI (Claude Code, Codex, Cursor and others)
npx skills add https://github.com/Orchestra-Research/AI-Research-SKILLs --skill langchain
Claude Code, by hand (all projects)
git clone --depth 1 https://github.com/Orchestra-Research/AI-Research-SKILLs.git /tmp/AI-Research-SKILLs mkdir -p ~/.claude/skills cp -R /tmp/AI-Research-SKILLs/14-agents/langchain ~/.claude/skills/langchain
For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.
What it costs your context
Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.
| When | What loads | Cost |
|---|---|---|
| Every session | Name and description | 79 tok |
| When the agent uses it | The SKILL.md instructions | 3,001 tok |
| Only if opened | 3 bundled files (38 KB) | varies |
Until it is used, langchain costs about 17× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 98 skills from Orchestra-Research/AI-Research-SKILLs would load 6,174 tokens of descriptions. Skills vs MCP study
Checks
Our checks found nothing to flag: it follows the Agent Skills specification's naming and size guidelines and doesn't pipe downloads into a shell.
Checked 2026-10-22 · method
What's inside
The headings of its SKILL.md. Read the full file on GitHub.
- LangChain - Build LLM Applications with Agents & RAG
- When to use LangChain
- Quick start
- Installation
- Basic LLM usage
- Create an agent (ReAct pattern)
- Core concepts
- 1. Models - LLM abstraction
- 2. Chains - Sequential operations
- 3. Agents - Tool-using reasoning
- 4. Memory - Conversation history
- RAG (Retrieval-Augmented Generation)
- Basic RAG pipeline
- Conversational RAG with memory
- Advanced agent patterns
- Structured output
- Parallel tool execution
- Streaming agent execution
- Common patterns
- Multi-document QA
- Custom tools with error handling
- LangSmith observability
- Vector stores
- Chroma (local)
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