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Build a Stock Portfolio AI Agent (Fullstack, Pydantic AI + AG-UI)

Bonnie on October 02, 2025

TL;DR In this guide, you will learn how to build fullstack AI agents with Pydantic AI with the AG-UI protocol. Also, we will cover how t...
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Nathan Tarbert CopilotKit

Awesome job @the_greatbonnie, bringing the Pydantic AI agents to the frontend so the user can collaborate with them directly is amazing!

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Bonnie CopilotKit

Thanks, Nathan.

I am happy to hear that.

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Sammy Scolling

I definitely want to try this one, thanks!

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Bonnie CopilotKit

Try it out and let me know how you find it.

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John Cook

We've switched to Pydantic. Where it really shines where most agent frameworks struggle like predictable, structured outputs that actually validate against your data set.

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Bonnie CopilotKit

That's awesome, John.

I am happy to hear, that.

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johnwoods12

This is sick!
I know what I'm coding out this weekend

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Bonnie CopilotKit

Hope you find it helpful.

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henryjohn21

Great tutorial, thanks for sharing!

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Bonnie CopilotKit

You are welcome, Henry.

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Henry Willz

This is cool

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Bonnie CopilotKit

Thanks

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Morgan

This is a great project to try! Definitely doing this next, thanks

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Bonnie CopilotKit

I am happy to hear that, Morgan.

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Ferguson

So glad this integration came out! Pydantic AI and AG-UI

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Bonnie CopilotKit

I am happy to hear that, Ferguson.

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William

I started building this recently and this guide helped me fly through it, thanks!

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Bonnie CopilotKit

I am happy to hear that, William.

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Steven

Saved this for later :)

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Bonnie CopilotKit

That sounds awesome, Steven.