FastAPI

Hello World! 👋 This is the new official FastAPI Twitter account! 🎉 (Tweets by @tiangolo 🤓)

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

Big news: the first-ever ✨ FastAPI Conf ✨ is coming! 📍 Amsterdam 📅 October 28 Meet the FastAPI team, connect with developers ☕️ 🎟️ Join the waitlist for early ticket access: fastapiconf.com

@RainzeeWang @code @tombi_toml Yes 😎

@FastAPI @code @tombi_toml so with entrypoint i can just fastapi dev to run ？

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 @code with @tombi_toml 🤓

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

FastAPI 0.136.0 officially supports: ✨ free-threaded Python 🐍 ✨ (this announcement has no GIL puns) Thanks @OxyKodit, @patrick91, Nathan Goldbaum, @NucleonJohn 🙌 github.com/fastapi/fastapi

The FastAPI VS Code extension just shipped "go to tests" ✨ Thanks Savannah! 🙌

Here's FastAPI 0.135.3, adding support for fully vibe-coded apps ✨ Use the new app.vibe() decorator, embrace the AI future 🤖 Read the new docs: fastapi.tiangolo.com/advanced/vibe/

I usually read docs when learning a new technology, and @FastAPI has one of the most comprehensible docs.

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

@yezz123 🥲

This 1$ partnership made me do that, unfortunately 😔

I don’t like @FastAPI anymore

Are you using @antigravity as your editor? ☄️ Now you can install the official FastAPI Extension open-vsx.org/extension/Fast… 🎁

@gauthampai You had to do everything by hand, now it's as easy as it could be. 🤓

@FastAPI Are you telling me there was no SSE in FastAPI all this while? I recently vibe coded a prototype using Codex and asked it to implement SSE in a FastAPI based app. Need to see how it has done it. 🤨

FastAPI 0.135.0, with Server-Sent Events: fastapi.tiangolo.com/tutorial/serve… ✨

Sneak peek, that's it: response_class and yield ⚡️

Fawad! Just pushed FastAPI to its limits with 1,000 concurrent mixed-speed clients on our production-grade stack. Results are solid: 100% success rate with zero dropped connections. Even with 50% slow clients (simulating high backpressure), async handled it perfectly. Zero RAM spikes observed—buffering is truly a thing of the past. It’s rock solid under heavy p95 load

FastAPI 0.134.0 is fire! 🚀 Streaming thousands of items via the new JSON streaming feature has made our inventory system faster than ever. Stable RAM and low latency thanks to Pydantic's Rust core. Kudos to @tiangolo @FastAPI 🔥

@fantparl @pydantic If they suppored this they would, automatically: tiangolo.com/ideas/library-…

@FastAPI @pydantic Fastapi is great. I wonder if gemini 3 pro knows about newer features like this lol

Big features in FastAPI 0.134.0 ✨ 🌊 Stream JSON Lines with yield: fastapi.tiangolo.com/tutorial/strea… 🦀 @pydantic serializes each item to JSON (on Rust) for max perf 📦️Stream binary data with yield: fastapi.tiangolo.com/advanced/strea… 🤖 Library Agent Skill updated with this 🥚 Easter egg

Build APIs, use @FastAPI