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LangChain Samples is a collection of code examples, cookbooks, reference implementations, and workshop materials created by customer facing teams at LangChain. These resources are designed purely for educational and demonstration purposes, helping developers explore patterns, integrations, and best practices when building with LangChain and related tooling.

All code and materials published here are provided as-is, without official support. Any assistance is offered strictly on a best-effort basis, and users should not expect production-grade support or long-term maintenance.

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  1. cicd-pipeline-example cicd-pipeline-example Public

    🤖🚀 CI/CD pipeline for LangSmith deployments and evals 🦜

    Python 28 11

  2. assistants-demo assistants-demo Public

    > **📹 Coming from the YouTube video?** This repository has been **updated for LangGraph V1** (released October 2025). The core concepts remain the same, but th…

    Python 19 8

  3. deepagent-gen-ui deepagent-gen-ui Public

    A demonstration of with a DeepAgent that generates CSV and PDF reports in custom React components.

    Python 2

  4. deepagent-coder deepagent-coder Public

    A deepagent-based coding assistant

    Python 2

  5. planner-agent-workshop planner-agent-workshop Public

    A progressive workshop showcasing LangChain v1 capabilities, building from a simple agent to a sophisticated multi-agent system with memory, middleware, and MC…

    Jupyter Notebook 2 2

  6. inbox-demo inbox-demo Public

    This project demonstrates the powerful capabilities of LangChain's Agent Inbox by implementing a sophisticated web search and research agent. The system showca…

    Python 1

Repositories

Showing 10 of 49 repositories
  • eval-ci-cd Public

    Demonstrates a CI/CD lifecycle for an online evaluation

    langchain-samples/eval-ci-cd’s past year of commit activity
    Jupyter Notebook 0 MIT 0 0 0 Updated Mar 2, 2026
  • evals-cicd Public

    A minimal example showing how to run LangSmith evaluations for a **multi-agent system** as part of your CI/CD pipeline. When you open a PR, the workflow automa…

    langchain-samples/evals-cicd’s past year of commit activity
    Jupyter Notebook 0 0 0 1 Updated Feb 19, 2026
  • langsmith-in-code Public

    This repository contains comprehensive tutorials and examples for implementing evaluations and tracing in code for LangSmith.

    langchain-samples/langsmith-in-code’s past year of commit activity
    Jupyter Notebook 0 MIT 3 0 0 Updated Feb 19, 2026
  • a2a-cross-workspace-tracing Public

    Demonstrates how to get unified distributed traces when two LangGraph agents communicate via the A2A protocol running on LangSmith's Agent Server.

    langchain-samples/a2a-cross-workspace-tracing’s past year of commit activity
    Python 0 0 0 0 Updated Feb 19, 2026
  • ADK-langsmith Public

    This repo demonstrates how to trace a Google ADK agent to LangSmith using two approaches: LangSmith's native integration and OTel (uses ADK's built-in OTel instrumentation)

    langchain-samples/ADK-langsmith’s past year of commit activity
    Python 0 0 0 0 Updated Feb 17, 2026
  • chat-demo Public

    Demo showing LangSmith threads and insights using a customer support KB agent.

    langchain-samples/chat-demo’s past year of commit activity
    Python 0 MIT 1 0 1 Updated Feb 17, 2026
  • lsd-custom-route-react-ui Public template

    A demo showcasing LangSmith Deployments custom routes, a deep agent and a React chat UI served from a single deployment. The frontend is built with Vite and uses the `useStream` hook from `@langchain/langgraph-sdk/react`

    langchain-samples/lsd-custom-route-react-ui’s past year of commit activity
    TypeScript 0 0 0 0 Updated Feb 16, 2026
  • planner-agent-workshop Public

    A progressive workshop showcasing LangChain v1 capabilities, building from a simple agent to a sophisticated multi-agent system with memory, middleware, and MC…

    langchain-samples/planner-agent-workshop’s past year of commit activity
    Jupyter Notebook 2 2 0 0 Updated Feb 16, 2026
  • cicd-pipeline-example Public

    🤖🚀 CI/CD pipeline for LangSmith deployments and evals 🦜

    langchain-samples/cicd-pipeline-example’s past year of commit activity
    Python 28 MIT 11 0 3 Updated Feb 11, 2026
  • eval-concepts Public

    A hands-on guide to evaluating LLM agents with [LangSmith](https://smith.langchain.com). This cookbook walks through four evaluation patterns — **final respons…

    langchain-samples/eval-concepts’s past year of commit activity
    Jupyter Notebook 0 MIT 0 0 0 Updated Feb 12, 2026

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