Your FastAPI is safe 🔒 Today, FastAPI was incorrectly flagged as malicious by automated tooling from a large company, among several other packages. FastAPI was not compromised. It was a false positive. We were not contacted before publication. This should not happen to OSS.

Big Typer release 0.26.0 🚀 Typer now vendors Click instead of depending on it as a third-party package Easier to maintain for both teams, solves compatibility issues, future features, etc. Massive job by @oxykodit.bsky.social 🙌 Thanks for everything, Click! 🙇 typer.tiangolo.com/tutorial/cli...

Asking the thing if it thinks the thing it did is a good thing

Who would have guessed it! 😱

It seems @fastapi.tiangolo.com 's downloads have more than doubled since early this year 📈 From 8M to 19M per DAY 💥 Maybe because coding agents are so good at writing Python and FastAPI, don't really know 🤔

Codex with /goal is quite good for the things it claims to be good. The FastAPI docs setup with translations is quite complex. The migration was not trivial. I was not expecting it to be doable. But codex got it right (with some extra tweaks after, but mostly just right).

I just finished migrating all the open source docs from MkDocs to @zensical.org 🚀 @fastapi.tiangolo.com was the last one. The iteration (build) speed makes the developer / author experience so much nicer, so much more productive.

Go check it! Looks nice 😎

Heck yeah! 🤘

You can fully close the lid on Linux laptops and keep them running, in case you didn't know.

FastAPI's massive global community now has a space where the people building it and the people running it in production can meet and talk directly 🎙️ Some of the best insights come from these in-person chats ☕️ Join the FastAPI Conf waiting list 📩 fastapiconf.com

We wanted FastAPI Conf to be stellar. ✨ So we brought in Matteo Benci, one of the main people behind @pyconit.bsky.social, an event among the most renowned Python conferences in the world. This is going to be good. Join the ticket waitlist. 🎟️ fastapiconf.com

Typer 0.25.1 comes with its own Library Skills for AI coding agents bundled ✨ Very cool things coming to Typer, your agent should know how to use them 🍰 Thanks @oxykodit.bsky.social ! 🙌 github.com/fastapi/typer

Install the library skills bundled with your dependencies (like FastAPI) for your coding agent 🤖 In Python or Node.js, both versions support both ecosystems ✨ github.com/tiangolo/lib...

Go to your @fastapi.tiangolo.com project and run: uvx library-skills Teach your AI coding agents to use FastAPI properly. 😎 library-skills.io

IT'S HAPPENING!!! 💃 People have asked me for an official @fastapi.tiangolo.com Conference for years. Here we go, let's meet in Amsterdam. ☕️

Typer 0.25.0 with a bug fix, thanks YuriiMotov! 🐛 github.com/fastapi/typer

Now there's autocompletion and docs in pyproject.toml for FastAPI 🎉 [tool.fastapi] entrypoint = "main:app" Make sure you have a modern editor and TOML plugin, like @vscode.dev with Tombi 🤓

Small FastAPI bug fix release 0.136.1 🐛 github.com/fastapi/fast...

Startup tip: if you're hiring in the US, don't use Remote, go straight to Gusto, even if you use Remote for other countries.

Here's Typer 0.24.2 with a small bug fix, thanks @oxykodit.bsky.social ! 🙌 typer.tiangolo.com

So, @thoughtworks.com thinks you should adopt Typer, and I agree 😎 CLIs are key for AI stuff, Python is the language where you (and agents) can build things the fastest, and Typer is how you build CLIs in Python 🤘 www.thoughtworks.com/radar/langua...

Free-threaded Python with @fastapi.tiangolo.com 🧵🚀 (this is not a thread, just a threads emoji)

The FastAPI VS Code extension just shipped "go to tests" ✨ Thanks @savannah.dev ! 🙌

March 2026 update of The Diff & The Merge, my substack about OS maintenance. oxykodit.substack.com/p/march-2026... - free-threaded Python in FastAPI - ty as type checker - triaging nanochat PRs - nanochat's little brother "autoresearch" - publishing LLM-readable skills files

All my Python projects are now using ty for type checks 🎉 @fastapi.tiangolo.com, Typer, SQLModel, Asyncer, etc. Thank you @oxykodit.bsky.social 🙌 ty is great, try it docs.astral.sh/ty/

Here's SQLModel 0.0.38 🍫 🐛 @carljm.me from the Astral team implemented a typing fix to improve correctness and compatibility with the next ty 🙌 sqlmodel.tiangolo.com

Now @fastapi.tiangolo.com is a fully AI agentic framework. This is the future. 🚀 Thank you alejsdev, @patrick.wtf, malvex 🙌

Some universities in at least two countries are asking students to get a CVE number assigned in an open source project to verify their academic results. Please don't do this, completely wrong incentive. This damages open source. It's a DDoS attack on maintainer attention.

Quality PR reviews I receive 🤓

If the Python core team started a weekly/monthly newsletter, what would y'all want out of it? What would make you excited to see the notification in your inbox? @emmatyping.dev and I were brainstorming a bit on this the other day, inspired a bit by @thisweekinrust.bsky.social.

Since it's now linked in the What's New for Python 3.15, I decided to migrate doesjitgobrrr.com to proper cloud hosting and out of my closet RPi cluster. The once unofficial JIT benchmarking site is now *official*, has a new look, and hosted on the very best @fastapicloud.com 🖤!

Do you code with Cursor? ↗️ Try the official (and verified ✅) FastAPI Extension from the marketplace ✨ open-vsx.org/extension/Fa...

Are you using Google Antigravity as your editor? ☄️ Now you can install the official FastAPI Extension open-vsx.org/extension/Fa... 🎁

Long-awaited, Server-Sent Events in @fastapi.tiangolo.com ✨

This @fastapi.tiangolo.com feature has been cooking in my mind for 2 years or so. 😅 So happy it's finally out there. And I think the developer experience is just right (minimal and simple). ✨

I've been working on something very cool for the past few months and today, it's finally yours! The *official* @fastapi.tiangolo.com extension for VS Code has launched! 🎉 Install: marketplace.visualstudio.com/items?itemNa... GitHub: github.com/fastapi/fast...

There's a @vscode.dev extension for @fastapi.tiangolo.com now! 🤯 It's so enjoyable to use, try it! @savannah.dev did an amazing job with it. 🙌

Libraries should be able to provide their own official AI Agent Skills, in sync with new versions and features. So I'm starting by shipping this in FastAPI. Next, Typer, SQLModel, etc. 🚀 Now it's time to ask your favorite coding agent to support it. 😎 tiangolo.com/ideas/librar...

FastAPI 0.132.0 adds strict Content-Type checking for JSON requests 🏰 This would solve a CSRF risk in local-network apps (apps intended to run on users' machines, on localhost) 🔒️ If your clients don't send a Content-Type, you can also disable it: fastapi.tiangolo.com/advanced/str...

You get so many features from @fastapi.tiangolo.com when you declare a return type - response model... And now you also get the best performance possible 😎🚀

🐛 Here's FastAPI 0.129.1 with a bug fix in the JSON Schema for binary data and file uploads. 📝 And a new guide to use base64 binary data in JSON payloads: fastapi.tiangolo.com/advanced/jso...

Asyncer 0.0.15 drops support for Python 3.9 🪓 github.com/fastapi/asyn...

SQLModel 0.0.35 drops support for Python 3.9 🪓 github.com/fastapi/sqlm...

Typer 0.24.0 just released, dropping support for Python 3.9 (that reached End of Life some months ago) 🪓 typer.tiangolo.com

I've been dreaming of this day since around one year ago when I started the LLM translations setup. ✨ Actually since the first translations years ago, LLMs made it actually feasible now. I like when technology makes things easier and more accessible to all humans. 🌐

Here's Typer 0.23.1 with a small bug fix 🐛 Thanks Brian Kohan! 🙌 ...and soon, dropping support for Python 3.9 🪓 typer.tiangolo.com

You can't imagine how happy I am to finally be able to use the vertical bar (|) for type unions in the internal code 😁

In Typer 0.23.0 (just released 🍫), when there are errors, by default it no longer shows local variables, but you can opt-in to enable it typer.tiangolo.com/tutorial/exc...

Typer 0.22.0 is out, dropping support for typer-slim, now it's all just typer, with Rich by default 🚀 If you don't know, don't worry, just keep using Typer 😎 If your app depends on typer-slim, change the dependency to typer 🔁 typer.tiangolo.com