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LangChain releases AI coding agent skills, boosting Claude Code performance from 29% to 95%
· featuresdkopen-sourceplatform · blog.langchain.com ↗

Overview

LangChain is releasing its first set of skills—specialized instruction packages designed to improve AI coding agent performance on ecosystem-specific tasks. These skills bridge the gap between general-purpose coding agents and domain expertise, enabling them to build and work with LangChain, LangGraph, and DeepAgents more effectively.

What Are Skills?

Skills are collections of curated instructions, scripts, and resources that enhance agent capabilities in specialized domains. Rather than overwhelming agents with all available tools at once (which historically degrades performance), skills use progressive disclosure—agents dynamically retrieve only the skills relevant to their current task. This targeted approach improves both accuracy and efficiency.

Skills are portable and shareable, consisting of markdown files and scripts that can be retrieved on demand. LangChain is open-sourcing its skill set so they can be ported to any coding agent platform that supports skill functionality.

The LangChain Skills Set

The langchain-skills repository contains 11 skills organized across three categories:

  • LangChain skills: Guidance on create_agent(), middleware patterns, and tool calling fundamentals
  • LangGraph skills: Instruction on working with LangGraph primitives, Human-in-the-Loop workflows, and durable execution
  • DeepAgents skills: Resources for the open-source Deep Agents package, including prebuilt middleware and filesystem integration

Performance Impact

The impact is substantial. Testing with Claude Code (Sonnet 4.6) showed dramatic improvement:

  • Without Skills: 25–29% pass rate on LangChain-related tasks
  • With Skills: 95% pass rate on the same tasks

Results were validated using LangSmith evaluations; LangChain plans to open-source the testing benchmark.

Installation & Integration

Skills can be installed locally or globally using the npx skills CLI:

# Local installation
npx skills add langchain-ai/langchain-skills --skill '*' --yes

# Global installation
npx skills add langchain-ai/langchain-skills --skill '*' --yes --global

# Link to Claude Code agent
npx skills add langchain-ai/langchain-skills --agent claude-code --skill '*' --yes --global

What's Next

LangChain plans to expand the skills library as new capabilities are added to its open-source projects and LangSmith platform. A complementary set of LangSmith skills is also being released simultaneously. The team is seeking community feedback for additional skills and improvements.