Pydantic

AG-UI - Pydantic AI Agent Framework / shim to use Pydantic with LLMs

Pydantic AI now supports AG-UI - an open protocol for building chat agents, meaning you can use existing frontend apps to interact with @pydantic.dev AI agents.

ai.pydantic.dev/ag-ui/#agent...

Agentic analytics in Slack with ClickHouse, MCP, and PydanticAI Let’s build a self-service analytics agent that we can talk to directly in Slack, that transparently queries our ClickHouse data warehouse.

Is Slack the new BI layer for the AI era?

It's now possible to build custom, self-service agentic analytics experiences in a single afternoon thanks to Slack, @pydantic.dev @anthropic.com MCP and ClickHouse

Podcast with @sa.muelcolvin.com on Software Engineering Radio is out!

Covers the @pydantic.dev ecosystem including Pydantic Validation, Pydantic AI and @logfire.pydantic.dev. Well worth a listen.

se-radio.net/2025/07/se-r...

It's so pleasant to start any data project by defining the @pydantic.dev models ❤️

GitHub - fastapi/fastapi: FastAPI framework, high performance, easy to learn, fast to code, ready for production FastAPI framework, high performance, easy to learn, fast to code, ready for production - fastapi/fastapi

Here's FastAPI 0.115.14 🚀

@patrick.wtf fixed support for unions of @pydantic.dev models in Form data. 🐛🎉

(This will make it easier to implement single sign-on 😉)

github.com/fastapi/fast...

Working on a number of AI Agent Boilerplates using #pydantic @pydantic.dev

I’ll give a talk about @pydantic.dev AI and Logfire today 12:25 at @pyconit.bsky.social 🙏

YouTube video by MeeTechnically Creating AI Agents with Pydantic AI

Created a video on agents with @pydantic.dev ai
- Creating bare bones agents
- Adding tools
- Using different llm models (local and cloud)
- Running agent in different ways (a
sync/async, streamed, graph)

youtu.be/_m2YpvsdxSA

Well done to whoever came up with the name for @pydantic.dev - it’s perfect

Building AI Applications the Pydantic Way (Sponsor: Pydantic) - PyCon US 2025 PyCon US 2025

At @pycon.us today @sa.muelcolvin.com is talking about Pydantic AI and Pydantic Logfire.

Room 316, 11.30 today.

There will be code.

us.pycon.org/2025/schedul...

@pydantic.dev's FastA2A! (A2A is Google's Agent2Agent Protocol, which complements MCP (developers.googleblog.com/en/a2a-a-new...).

ai.pydantic.dev/a2a/

Daily Startup Spotlight: Pydantic Recently recognised in the 𝗥𝗢𝗦𝗦… | AI World Daily Startup Spotlight: Pydantic Recently recognised in the 𝗥𝗢𝗦𝗦 𝗜𝗻𝗱𝗲𝘅 for its contributions to open-source software, Pydantic was founded in December 2022 (although the project dates back to 2017) ...

Daily Startup Spotlight: @pydantic.dev

Recently recognised in the 𝗥𝗢𝗦𝗦 𝗜𝗻𝗱𝗲𝘅, the company develops open-source tools and observability solutions, with a mission focused on improving developer experience through transparency and data validation.

Find out more: www.linkedin.com/posts/ai-wor...

YouTube video by Pydantic Pydantic, Jason Liu & MCP Meetup - April 8, 2025

The recording of last week's meetup with Jason Liu, David Soria Parra (Anthropic), OpenAI and @sa.muelcolvin.com is now live on youtube.

Notably this includes David's plan for the future of MCP.

youtu.be/GqufkaLJV44

I love @pydantic.dev, it makes things so much easier and more elegant it almost makes me cry🥺

As an alternative to the Console, I also deployed a variant on @pydantic.dev 's pydantic.run : sweatstack.run

Python devs building AI (agents): Can we chat about your experience? My name is Greg Kogan and I'm conducting user research with experienced Python developers who build AI applications, particularly agent-based systems. If selected, we'll do a 45-minute Zoom interview ...

Are you building agents, or building with AI more generally?

Double win:

* Help make @logfire.pydantic.dev better
* Get $100 Amazon voucher

Sign up for a short interview with the amazing Greg Kogan:

docs.google.com/forms/d/e/1F...

THE EVAL HAS LANDED. 🦅

pydantic-evals has been a major piece of work from David Montague over the last month.

I'm pretty excited to see it move the dial on how easily Python developers can benchmark and improve AI code.

Evals - PydanticAI Agent Framework / shim to use Pydantic with LLMs

Pydantic Evals is a powerful evaluation framework designed to help you systematically test and evaluate the performance and accuracy of the systems you build, especially when working with LLMs.

More info here: ai.pydantic.dev/evals/

Pydantic Logfire EU Data Region Announcement | Pydantic Logfire now offers data residency in the EU region

Pydantic Logfire now supports dedicated EU data residency!

If you need your data in the EU for compliance, or just want to keep your data physically within the EU, this new region makes it easy.

Announcement blog post: pydantic.dev/articles/eu-...

The new Logfire JavaScript/TypeScript SDK is here! Built on @opentelemetry.io , it supports @cloudflare.social Workers, @vercel.com , & Node.js/Express. Check out the details:
pydantic.dev/articles/log...

I feel that! Many tools are just infuriatingly bad, making very easy things slightly easier and supposedly easy things very hard.

The exception: PydanticAI by @pydantic.dev. It's still relatively fresh, but it's built by people who know how to write production code for people who know.

I just opened a PR on @hf.co's Transformers repo for @pydantic.dev's Logfire integration as TrainerCallback 🤗

This integration facilitates real-time logging and monitoring, offering enhanced visibility into training metrics and events ⚙️

Pydantic Logfire Enterprise | Pydantic Logfire Self Hosting Is Available

Pydantic Logfire Enterprise is here!

We now offer both self-hosted Logfire and Cloud enterprise @logfire.pydantic.dev.

pydantic.dev/articles/log...

Logfire's MCP server could fundamentally change how people complete the software development feedback loop: development -> runtime errors -> bug fix.

Unlike other observability platforms, @logfire.pydantic.dev let's the model (or you!) write full SQL to find the relevant data.

YouTube video by Pydantic Pydantic Logfire MCP Server with Cursor Demo

Pydantic Logfire MCP Server is here! Easily hook your AI agents into observability data and supercharge debugging in real time.

For Cursor integration, just update .cursor/mcp.json to use Logfire and you’re set: www.youtube.com/watch?v=lCda...

Full details: pydantic.dev/articles/mcp...

Pydantic Logfire Rust SDK Announcement | Pydantic Our Logfire Rust SDK Is Now Available

Our new Logfire Rust SDK is out! It's a drop-in addition to your existing Rust instrumentation. Not all Python SDK features are there yet, let us know what you want us to tackle first: pydantic.dev/articles/rus...

Pydantic is Hiring Again | Pydantic The Pydantic team has new open roles

We're hiring, come join the team and work on AI, observability and databases.

pydantic.dev/articles/hir...

👍 It'll land next week.

Have you worked with Pydantic AI from @pydantic.dev yet?

I received a report that the last FastAPI release broke some use cases.

The report had a short and clear explanation of expected behavior and a minimal reproducible example. Love those. ✨

The use case was valid, it should be supported as it was standard @pydantic.dev.