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From Traces to Insights: Understanding Agent Behavior at Scale

From Traces to Insights: Understanding Agent Behavior at Scale

Visibility is the easiest piece. The hard part is analyzing and understanding what you’re observing. I’ve spoken to teams recording 100k+ traces every

Harrison's In the Loop Series 5 min read
How Remote uses LangChain and LangGraph to onboard thousands of customers with AI

How Remote uses LangChain and LangGraph to onboard thousands of customers with AI

Guest post written by José Mussa (Staff Software Engineer @ Remote) Remote is a fast-growing startup helping companies hire, manage, and pay employees globally from a

Case Studies 5 min read
Choosing the Right Multi-Agent Architecture

Choosing the Right Multi-Agent Architecture

In this post, we’ll explore when multi-agent architectures become necessary, the four main patterns we’ve observed, and how LangChain empowers you to effectively build multi-agent systems.

7 min read
LangSmith Agent Builder Now Generally Available

Now GA: LangSmith Agent Builder

LangSmith Agent Builder is now generally available—enabling anyone to build agents for complex daily tasks, without writing code.

agents 2 min read
In software, the code documents the app. In AI, the traces do.

In software, the code documents the app. In AI, the traces do.

TL;DR * In traditional software, you read the code to understand what the app does - the decision logic lives in your codebase * In AI

Harrison's In the Loop Series 5 min read
Fastweb + Vodafone: Transforming Customer Experience with AI Agents using LangGraph and LangSmith

Fastweb + Vodafone: Transforming Customer Experience with AI Agents using LangGraph and LangSmith

See how Fastweb + Vodafone revolutionized customer service and call center operations with their agents, Super TOBi and Super Agent.

Case Studies 7 min read
Debugging Deep Agents with LangSmith

Debugging Deep Agents with LangSmith

Debugging is the process of finding and fixing errors. This is a critical step in software engineering, and even more critical in agent engineering. One

5 min read
Introducing LangSmith Fetch: Debug agents from your terminal

Introducing LangSmith Fetch: Debug agents from your terminal

⚠️ DEPRECATION NOTICE: This repository is no longer actively maintained and will not receive further updates. The project has been deprecated and users are advised to

4 min read
Introducing Polly: Your AI Agent Engineer

Introducing Polly: Your AI Agent Engineer

Today, we're launching Polly: an AI-powered assistant built directly into LangSmith that helps you debug, analyze, and improve your agents. And yes, we

4 min read
Agent Engineering: A New Discipline

Agent Engineering: A New Discipline

If you’ve built an agent, you know that the delta between “it works on my machine” and “it works in production” can be huge.

5 min read
Evaluating Deep Agents CLI on Terminal Bench 2.0

Evaluating Deep Agents CLI on Terminal Bench 2.0

By Vivek Trivedy and Eugene Yurtsev Deep Agents CLI is a coding agent built on top of the Deep Agents SDK, providing an interactive terminal

3 min read
Evaluating Deep Agents: Our Learnings

Evaluating Deep Agents: Our Learnings

Over the past month at LangChain, we shipped four applications on top of the Deep Agents harness: * DeepAgents CLI: a coding agent * LangSmith Assist: an

By LangChain 7 min read

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