Kitchen Nightmares: LangChain agents edition

📰 Medium · Python

Learn how to use LangChain and LangSmith to create and debug agents for a health application, and how to diagnose agent bugs using LangSmith

intermediate Published 24 Jun 2026

Action Steps

Implement agents using LangChain and LangSmith for agent observability
Use FastAPI and React to build a web app for the health application
Diagnose agent bugs using LangSmith
Test and refine the agents to improve their performance
Use the insights from LangSmith to optimize the agent's decision-making process

Who Needs to Know This

Developers and engineers working on AI-powered health applications can benefit from this article, as it provides a real-world example of how to implement and debug agents using LangChain and LangSmith

Key Insight

💡 Using LangSmith can help diagnose agent bugs and improve their performance, leading to a more effective health application

Key Takeaways

Learn how to use LangChain and LangSmith to create and debug agents for a health application, and how to diagnose agent bugs using LangSmith

Full Article

Title: Kitchen Nightmares: LangChain agents edition

URL Source: https://kristian-roopnarine.medium.com/kitchen-nightmares-langchain-agents-edition-ea86fcf64233?source=rss------python-5

Published Time: 2026-06-24T23:44:05Z

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# Kitchen Nightmares: LangChain agents edition

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[Kristian Roopnarine](https://kristian-roopnarine.medium.com/?source=post_page---byline--ea86fcf64233---------------------------------------)

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8 min read

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My agents are idiot sandwiches and its all my fault

![Image 3](https://miro.medium.com/v2/resize:fit:600/1*sG-C1zpFvHp8sf5I_Rl5GA.jpeg)

source: [https://makeameme.org/meme/wheres-the-lamb-5a052a](https://makeameme.org/meme/wheres-the-lamb-5a052a)

## TLDR?

* Health application to parse recipes, create meals and meal plans
* Implemented agents using LangChain and LangSmith for agent observability, FastAPI and React for web app
* How using LangSmith can help diagnose agent bugs
* I fired the idiot sandwich agent

## Who doesn’t love a good

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Kitchen Nightmares: LangChain agents edition

Key Takeaways

Full Article

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