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Learn more about how to build agents with LangChain products.

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New in LangSmith Agent Builder: all new agent chat, file uploads, and tool registry

New in LangSmith Agent Builder: all new agent chat, file uploads, and tool registry LangChain

2.1K views - 5 days ago

Observability and Evals for AI Agents: A Simple Breakdown

Observability and Evals for AI Agents: A Simple Breakdown LangChain

6.1K views - 6 days ago

The Future of Agent UIs: Streaming Subagents in Real Time

The Future of Agent UIs: Streaming Subagents in Real Time LangChain

9.1K views - 6 days ago

Interrupt26 is back May 13-14 in San Francisco

Interrupt26 is back May 13-14 in San Francisco LangChain

855 views - 1 week ago

Building Better AI Agents: Observability and Evaluation

Building Better AI Agents: Observability and Evaluation LangChain

4.1K views - 2 weeks ago

The Only Way to Debug AI Agents

The Only Way to Debug AI Agents LangChain

8.6K views - 2 weeks ago

The Secret to Scalable AI Agents: Virtual Filesystems with Deep Agents

The Secret to Scalable AI Agents: Virtual Filesystems with Deep Agents LangChain

8.2K views - 2 weeks ago

What AI Agents Talk About on Moltbook

What AI Agents Talk About on Moltbook LangChain

4.8K views - 3 weeks ago

Introducing: LangSmith Agent Builder

Introducing: LangSmith Agent Builder LangChain

4.6K views - 1 month ago

Introducing /remember: Teaching Agents to Learn from Experience

Introducing /remember: Teaching Agents to Learn from Experience LangChain

9.5K views - 1 month ago

LangChain Academy New Course: LangSmith Agent Builder

LangChain Academy New Course: LangSmith Agent Builder LangChain

5.1K views - 1 month ago

LangSmith Agent Builder Technical Highlights

LangSmith Agent Builder Technical Highlights LangChain

1.5K views - 1 month ago

3 Hidden Features That Make AI Agents Production-Ready

3 Hidden Features That Make AI Agents Production-Ready LangChain

7.3K views - 1 month ago

Building with Subagents: Design Decisions

Building with Subagents: Design Decisions LangChain

8.8K views - 1 month ago

Choosing the Right Multi-Agent Architecture

Choosing the Right Multi-Agent Architecture LangChain

13.7K views - 1 month ago

Build Better Agent UX: Streaming Progress, Status, and File Ops with LangChain

Build Better Agent UX: Streaming Progress, Status, and File Ops with LangChain LangChain

3.9K views - 1 month ago

How I built an AI agent to automate my emails with LangSmith Agent Builder

How I built an AI agent to automate my emails with LangSmith Agent Builder LangChain

5K views - 1 month ago

Streaming Typed Agent Messages in LangChain and React

Streaming Typed Agent Messages in LangChain and React LangChain

3.2K views - 1 month ago

LangSmith Agent Builder: On the street in San Francisco

LangSmith Agent Builder: On the street in San Francisco LangChain

3.4K views - 1 month ago

How Cursor Builds the Future of AI Coding Tools

How Cursor Builds the Future of AI Coding Tools LangChain

3.8K views - 1 month ago

Ralph Mode for Deep Agents: Running an Agent Forever

Ralph Mode for Deep Agents: Running an Agent Forever LangChain

10.6K views - 1 month ago

Learning Skills with Deepagents

Learning Skills with Deepagents LangChain

13.9K views - 2 months ago

Tracing Claude Code to LangSmith

Tracing Claude Code to LangSmith LangChain

3.9K views - 2 months ago

Approaches for Managing Agent Memory

Approaches for Managing Agent Memory LangChain

6.6K views - 2 months ago

LangChain Academy New Course: Introduction to LangChain - Python

LangChain Academy New Course: Introduction to LangChain - Python LangChain

15.5K views - 2 months ago

Build an MCP Agent with Claude: Dynamic Tool Discovery Across Cloudflare MCP Servers

Build an MCP Agent with Claude: Dynamic Tool Discovery Across Cloudflare MCP Servers LangChain

4.8K views - 2 months ago

The agent development loop with LangSmith + Claude Code / Deepagents

The agent development loop with LangSmith + Claude Code / Deepagents LangChain

5.6K views - 2 months ago

I Let an AI Control My Browser to Play Tic-Tac-Toe - LangChainJS Tutorials

I Let an AI Control My Browser to Play Tic-Tac-Toe - LangChainJS Tutorials LangChain

2.6K views - 2 months ago

Building & Observing a Deep Agent for Email Triage with LangSmith

Building & Observing a Deep Agent for Email Triage with LangSmith LangChain

4.2K views - 2 months ago

Observing & Evaluating Deep Agents Webinar with LangChain

Observing & Evaluating Deep Agents Webinar with LangChain LangChain

3.7K views - 2 months ago

Trace OpenRouter Calls to LangSmith — No Code Changes Needed

Trace OpenRouter Calls to LangSmith — No Code Changes Needed LangChain

1.2K views - 2 months ago

LangSmith Fetch: CLI tool to debug agents from your terminal

LangSmith Fetch: CLI tool to debug agents from your terminal LangChain

2.3K views - 2 months ago

Polly: The AI Assistant for AI Engineering in LangSmith

Polly: The AI Assistant for AI Engineering in LangSmith LangChain

3.5K views - 2 months ago

How to debug voice agents with LangSmith

How to debug voice agents with LangSmith LangChain

2.3K views - 2 months ago

Build a voice agent with LangChain

Build a voice agent with LangChain LangChain

16.1K views - 2 months ago

Production-Ready Agents: Automatic Tool Retries with Exponential Backoff

Production-Ready Agents: Automatic Tool Retries with Exponential Backoff LangChain

2.8K views - 2 months ago

Building a Linear issue agent with Langsmith Agent Builder

Building a Linear issue agent with Langsmith Agent Builder LangChain

2.6K views - 2 months ago

Building a Market Research Assistant with Langsmith Agent Builder

Building a Market Research Assistant with Langsmith Agent Builder LangChain

3.7K views - 2 months ago

Building an Email Assistant with Langsmith Agent Builder

Building an Email Assistant with Langsmith Agent Builder LangChain

2.4K views - 2 months ago

Summarization Middleware (Python)

Summarization Middleware (Python) LangChain

6K views - 2 months ago

LangSmith Agent Builder Now Available in Public Beta

LangSmith Agent Builder Now Available in Public Beta LangChain

10.9K views - 2 months ago

Anthropic-Style Context Editing… Now for Every LLM in LangChainJS!

Anthropic-Style Context Editing… Now for Every LLM in LangChainJS! LangChain

3.8K views - 2 months ago

Product Evals (for AI Applications) in Three Simple Steps

Product Evals (for AI Applications) in Three Simple Steps LangChain

5.1K views - 2 months ago

AI Agents in Production: Lessons from Rippling and LangChain

AI Agents in Production: Lessons from Rippling and LangChain LangChain

5.1K views - 2 months ago

Using skills with Deep Agents CLI

Using skills with Deep Agents CLI LangChain

15.2K views - 2 months ago

Managing Agent Context with LangChain: Summarization Middleware Explained

Managing Agent Context with LangChain: Summarization Middleware Explained LangChain

5.1K views - 2 months ago

What are Deep Agents?

What are Deep Agents? LangChain

22.4K views - 3 months ago

Build a Research Agent with Deep Agents

Build a Research Agent with Deep Agents LangChain

23.6K views - 3 months ago

Model Call Limit Middleware (Python)

Model Call Limit Middleware (Python) LangChain

2.4K views - 3 months ago

Agents Gone Wild? Use Tool Call Limits in LangChainJS to Keep Them in Check!

Agents Gone Wild? Use Tool Call Limits in LangChainJS to Keep Them in Check! LangChain

1.1K views - 3 months ago

Building a Research Agent with Gemini 3 + Deep Agents

Building a Research Agent with Gemini 3 + Deep Agents LangChain

27.7K views - 3 months ago

Model Fallback Middleware (Python)

Model Fallback Middleware (Python) LangChain

2.3K views - 3 months ago

Stop Endless Back-and-Forth — Add Model Call Limits in LangChainJS

Stop Endless Back-and-Forth — Add Model Call Limits in LangChainJS LangChain

833 views - 3 months ago

LangChain Academy New Course: LangSmith Essentials

LangChain Academy New Course: LangSmith Essentials LangChain

6.8K views - 3 months ago

To-Do List Middleware (Python)

To-Do List Middleware (Python) LangChain

7.5K views - 3 months ago

Why Most AI Agents Fail — and How a Simple Todo List Fixes It

Why Most AI Agents Fail — and How a Simple Todo List Fixes It LangChain

10.1K views - 3 months ago

Execute code with sandboxes for Deep Agents

Execute code with sandboxes for Deep Agents LangChain

7.3K views - 3 months ago

Add a Human-in-the-Loop to Your LangChain Agent (Next.js + TypeScript Tutorial)

Add a Human-in-the-Loop to Your LangChain Agent (Next.js + TypeScript Tutorial) LangChain

3.6K views - 3 months ago

Tool Call Limit Middleware (Python)

Tool Call Limit Middleware (Python) LangChain

4.8K views - 3 months ago

How Agents Use Context Engineering

How Agents Use Context Engineering LangChain

24.5K views - 3 months ago