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Building & Observing a Deep Agent for Email Triage with LangSmith

Building & Observing a Deep Agent for Email Triage with LangSmith

LangChain December 15, 2025
In this video, we walk through how to build and observe a deep agent using LangSmith. We’ll build a simple …
 
Observing & Evaluating Deep Agents Webinar with LangChain

Observing & Evaluating Deep Agents Webinar with LangChain

LangChain December 12, 2025
Explore the unique challenges of observing and evaluating Deep Agents in production. Deep Agents represent a shift in how AI …
 
Trace OpenRouter Calls to LangSmith — No Code Changes Needed

Trace OpenRouter Calls to LangSmith — No Code Changes Needed

LangChain December 11, 2025
OpenRouter's new Broadcast feature lets you send all your traces directly to LangSmith with no code changes required — whether …
 
LangSmith Fetch: CLI tool to debug agents from your terminal

LangSmith Fetch: CLI tool to debug agents from your terminal

LangChain December 10, 2025
Learn how to debug agents from your terminal using LangSmith Fetch, the new CLI that brings LangSmith trace data directly …
 
Polly: The AI Assistant for AI Engineering in LangSmith

Polly: The AI Assistant for AI Engineering in LangSmith

LangChain December 10, 2025
See how Polly, the AI assistant for AI engineering in LangSmith, helps you understand long-running agent executions by analyzing traces, …
 
How to debug voice agents with LangSmith

How to debug voice agents with LangSmith

LangChain December 9, 2025
Learn how to debug and improve a AI voice agent using LangSmith. We’ll walk through tracing conversations, spotting failures, and …
 
Build a voice agent with LangChain

Build a voice agent with LangChain

LangChain December 9, 2025
Learn how to build a speech-to-text voice agent using LangChain. We break down the two methods of building voice agents …
 
Production-Ready Agents: Automatic Tool Retries with Exponential Backoff

Production-Ready Agents: Automatic Tool Retries with Exponential Backoff

LangChain December 4, 2025
Tools fail. APIs time out. Services throw random 500s. If your agent can’t recover, your entire workflow collapses. In this …
 
Building a Linear issue agent with Langsmith Agent Builder

Building a Linear issue agent with Langsmith Agent Builder

LangChain December 3, 2025
Learn how to build an agent that can create and edit Linear issues using our no-code Agent Builder. Try it …
 
Building a Market Research Assistant with Langsmith Agent Builder

Building a Market Research Assistant with Langsmith Agent Builder

LangChain December 3, 2025
Learn how to quickly create a research agent in LangSmith using our no-code Agent Builder. Try it for free today: …
 
Building an Email Assistant with Langsmith Agent Builder

Building an Email Assistant with Langsmith Agent Builder

LangChain December 3, 2025
Learn how to quickly create an email assistant in LangSmith using our no-code Agent Builder. Try it for free today: …
 
Summarization Middleware (Python)

Summarization Middleware (Python)

LangChain December 2, 2025
Learn about how to use LangChain's summarization middleware as a key component of your context engineering pipeline. This middleware is …
 
LangSmith Agent Builder Now Available in Public Beta

LangSmith Agent Builder Now Available in Public Beta

LangChain December 2, 2025
LangSmith Agent Builder is now in Public Beta, enabling anyone to create production ready agents without writing code. Learn what's …
 
Anthropic-Style Context Editing… Now for Every LLM in LangChainJS!

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

LangChain December 2, 2025
Learn how to bring Anthropic’s powerful Context Editing capabilities — like tool result clearing — to any LLM using LangChainJS. …
 
Product Evals (for AI Applications) in Three Simple Steps

Product Evals (for AI Applications) in Three Simple Steps

LangChain December 1, 2025
Eugene Yan wrote a GREAT blogpost on how to build product evals (for AI applications) in three simple steps: https://eugeneyan.com/writing/product-evals/ …
 
AI Agents in Production: Lessons from Rippling and LangChain

AI Agents in Production: Lessons from Rippling and LangChain

LangChain November 26, 2025
How does a company deploy AI agents across HR, payroll, IT, and finance products used by thousands of companies? Ankur …
 
Using skills with Deep Agents CLI

Using skills with Deep Agents CLI

LangChain November 25, 2025
Anthropic recently introduced the idea of agent skills, a directory of folders that an agent can access to perform different …
 
Managing Agent Context with LangChain: Summarization Middleware Explained

Managing Agent Context with LangChain: Summarization Middleware Explained

LangChain November 25, 2025
Long-running agents eventually hit context overload — leading to context poisoning, distraction, confusion, and degraded performance. In this video, Christian …
 
What are Deep Agents?

What are Deep Agents?

LangChain November 24, 2025
Deep Agents is a term we coined to describe agents capable of handling complex, open-ended tasks over long time horizons. …
 
Build a Research Agent with Deep Agents

Build a Research Agent with Deep Agents

LangChain November 20, 2025
Deepagents is a simple, open source agent harness built by LangChain. It uses some common principle seen in popular agents …
 
Model Call Limit Middleware (Python)

Model Call Limit Middleware (Python)

LangChain November 20, 2025
Learn about how to use LangChain's model call limit middleware as a guardrail for agents. This middleware can be used …
 
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 November 20, 2025
In this tutorial, Christian Bromann will show you how to prevent runaway tool usage using the Tool Call Limit Middleware …
 
Building a Research Agent with Gemini 3 + Deep Agents

Building a Research Agent with Gemini 3 + Deep Agents

LangChain November 19, 2025
Google's eagerly anticipated Gemini 3 Pro release shows state-of-the-art performance across a wide range of agentic evaluations. Here, we show …
 
Model Fallback Middleware (Python)

Model Fallback Middleware (Python)

LangChain November 18, 2025
Learn about how to use LangChain's new model fallback middleware to add resilience to your applications. Automatically switch between models …