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- ---
- title: "Pydantic is All You Need"
- description: "How Pydantic solved AI agent reliability."
- icon: "book"
- ---
- The idea of using Pydantic to validate tool calls and responses is not new. It was popularized by Jason Liu in his library called [Instructor](https://github.com/instructor-ai/instructor).
- To really understand why it's such a game changer, we recommend watching this video:
- <iframe
- width="100%"
- height="400"
- src="https://www.youtube.com/embed/yj-wSRJwrrc"
- title="YouTube video player"
- frameborder="0"
- allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
- allowfullscreen
- ></iframe>
- ## Learn more
- To take your tools to the next level, we highly recommend the following resources:
- - [Pydantic Models Documentation](https://docs.pydantic.dev/latest/concepts/models/)
- - [Instructor Concepts](https://python.useinstructor.com/concepts/)
- - [Instructor Tips & Tricks](https://python.useinstructor.com/tutorials/2-tips/)
- - [Instructor Cookbook](https://python.useinstructor.com/examples/)
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