Sebastián Ramírez
@tiangolo.com
Creator of @fastapi.tiangolo.com, Typer, SQLModel, Asyncer, etc 🚀
From 🇨🇴 in 🇩🇪
Open Source, APIs, and tools for data/ML 🤖
Building @fastapicloud.com ⚡️
From 🇨🇴 in 🇩🇪
Open Source, APIs, and tools for data/ML 🤖
Building @fastapicloud.com ⚡️
That's crazy!!! (as @marcelotryle.bsky.social would say)
It's always very fun seeing Marcelo live, don't miss it. 🤙
It's always very fun seeing Marcelo live, don't miss it. 🤙
What makes FastAPI fast, and how much faster can it get? ⚡
Come and learn from @marcelotryle.bsky.social, maintainer of Starlette and Uvicorn: surprising bottlenecks, Rust and Zig experiments, and what's next. 🤓
Join us at FastAPI Conf!
fastapiconf.com/speakers/#ma...
Come and learn from @marcelotryle.bsky.social, maintainer of Starlette and Uvicorn: surprising bottlenecks, Rust and Zig experiments, and what's next. 🤓
Join us at FastAPI Conf!
fastapiconf.com/speakers/#ma...
September 15, 2026 at 2:54 PM
That's crazy!!! (as @marcelotryle.bsky.social would say)
It's always very fun seeing Marcelo live, don't miss it. 🤙
It's always very fun seeing Marcelo live, don't miss it. 🤙
Reposted by Sebastián Ramírez
Want your FastAPI Conf T-shirt in your size? 👕
Get your ticket and select your size by September 20!
Tickets bought after that still include a T-shirt, but your size won't be guaranteed.
Join us in Amsterdam! 🚲
fastapiconf.com
Get your ticket and select your size by September 20!
Tickets bought after that still include a T-shirt, but your size won't be guaranteed.
Join us in Amsterdam! 🚲
fastapiconf.com
FastAPI Conf 2026 · Amsterdam
A day of FastAPI with the people who build it. October 28, 2026, at the Transformatorhuis in Amsterdam.
fastapiconf.com
September 10, 2026 at 3:44 PM
Want your FastAPI Conf T-shirt in your size? 👕
Get your ticket and select your size by September 20!
Tickets bought after that still include a T-shirt, but your size won't be guaranteed.
Join us in Amsterdam! 🚲
fastapiconf.com
Get your ticket and select your size by September 20!
Tickets bought after that still include a T-shirt, but your size won't be guaranteed.
Join us in Amsterdam! 🚲
fastapiconf.com
I'm still amazed that @fastapi.tiangolo.com helps scientists around the planet access space telescope data. ✨
I'm really looking forward to this talk. 🤩
I'm really looking forward to this talk. 🤩
How does FastAPI help deliver NASA's James Webb Space Telescope data around the world? 🔭
Come and learn from @ben-falk.bsky.social at FastAPI Conf: FastAPI and the tech stack used at the Space Telescope Science Institute. 🌠
fastapiconf.com/speakers/#be...
Come and learn from @ben-falk.bsky.social at FastAPI Conf: FastAPI and the tech stack used at the Space Telescope Science Institute. 🌠
fastapiconf.com/speakers/#be...
September 8, 2026 at 11:38 AM
I'm still amazed that @fastapi.tiangolo.com helps scientists around the planet access space telescope data. ✨
I'm really looking forward to this talk. 🤩
I'm really looking forward to this talk. 🤩
You really want to get more insights into how a mastermind like this thinks about code and AI. I definitely do.
Pydantic is the data building block of FastAPI. 🏯
In these past years, it became the data building block of AI... and virtually all Python data validation. 🐍
Come and learn directly from @sa.muelcolvin.com, the author of @pydantic.dev, how he uses AI to code.
fastapiconf.com/speakers/#sa...
In these past years, it became the data building block of AI... and virtually all Python data validation. 🐍
Come and learn directly from @sa.muelcolvin.com, the author of @pydantic.dev, how he uses AI to code.
fastapiconf.com/speakers/#sa...
September 3, 2026 at 3:47 PM
You really want to get more insights into how a mastermind like this thinks about code and AI. I definitely do.
Reposted by Sebastián Ramírez
The FastAPI full-stack template now comes with the agent skills (uvx library-skills) for FastAPI and SQLModel built in.
You can create your project, point your agent to it, and it will be able to write modern and correct code with the libararies.
github.com/fastapi/full...
You can create your project, point your agent to it, and it will be able to write modern and correct code with the libararies.
github.com/fastapi/full...
GitHub - fastapi/full-stack-fastapi-template: Full-stack web application template with FastAPI, React, SQLModel, PostgreSQL, Vite, Tailwind CSS, shadcn/ui, FastAPI Cloud, and Docker Compose.
Full-stack web application template with FastAPI, React, SQLModel, PostgreSQL, Vite, Tailwind CSS, shadcn/ui, FastAPI Cloud, and Docker Compose. - fastapi/full-stack-fastapi-template
github.com
September 1, 2026 at 11:55 AM
The FastAPI full-stack template now comes with the agent skills (uvx library-skills) for FastAPI and SQLModel built in.
You can create your project, point your agent to it, and it will be able to write modern and correct code with the libararies.
github.com/fastapi/full...
You can create your project, point your agent to it, and it will be able to write modern and correct code with the libararies.
github.com/fastapi/full...
Reposted by Sebastián Ramírez
Come and learn how typing.Annotated works underneath from François Voron at FastAPI Conf. 🤓
Learn things you won't learn anywhere else.
Join us in Amsterdam! 🚲️
fastapiconf.com/speakers/#fr...
Learn things you won't learn anywhere else.
Join us in Amsterdam! 🚲️
fastapiconf.com/speakers/#fr...
August 31, 2026 at 5:17 PM
Come and learn how typing.Annotated works underneath from François Voron at FastAPI Conf. 🤓
Learn things you won't learn anywhere else.
Join us in Amsterdam! 🚲️
fastapiconf.com/speakers/#fr...
Learn things you won't learn anywhere else.
Join us in Amsterdam! 🚲️
fastapiconf.com/speakers/#fr...
Reposted by Sebastián Ramírez
A few days ago, the Early Bird tickets for FastAPI Conf got officially SOLD OUT! 🐦️
The response has been incredible. 🚀
If you’ve been thinking about joining us, don’t wait too long. 🏃♀️
Get your ticket: fastapiconf.com
The response has been incredible. 🚀
If you’ve been thinking about joining us, don’t wait too long. 🏃♀️
Get your ticket: fastapiconf.com
FastAPI Conf 2026 · Amsterdam
A day of FastAPI with the people who build it. October 28, 2026, at the Transformatorhuis in Amsterdam.
fastapiconf.com
August 28, 2026 at 1:20 PM
A few days ago, the Early Bird tickets for FastAPI Conf got officially SOLD OUT! 🐦️
The response has been incredible. 🚀
If you’ve been thinking about joining us, don’t wait too long. 🏃♀️
Get your ticket: fastapiconf.com
The response has been incredible. 🚀
If you’ve been thinking about joining us, don’t wait too long. 🏃♀️
Get your ticket: fastapiconf.com
Finally, I can guide you to build a proper full-stack app, from scratch, until it's deployed to your users, in minutes. 🤏🚀
I've been working towards this for the past 10+ years. 😅
Now it's about continuous improvements and more planned features. 😎
I've been working towards this for the past 10+ years. 😅
Now it's about continuous improvements and more planned features. 😎
The FastAPI full-stack template now comes with @fastapicloud.com ✨
Create your account, set settings, done. It deploys on merge. ⚡️
You can also still self-host it instead, using the guide and following all the steps.
github.com/fastapi/full...
Create your account, set settings, done. It deploys on merge. ⚡️
You can also still self-host it instead, using the guide and following all the steps.
github.com/fastapi/full...
August 27, 2026 at 7:01 AM
Finally, I can guide you to build a proper full-stack app, from scratch, until it's deployed to your users, in minutes. 🤏🚀
I've been working towards this for the past 10+ years. 😅
Now it's about continuous improvements and more planned features. 😎
I've been working towards this for the past 10+ years. 😅
Now it's about continuous improvements and more planned features. 😎
I didn't see this coming. 👀
I always thought @fastapi.tiangolo.com should have more followers than me individually, but it hadn't happened yet. This makes more sense to me. 😅
I always thought @fastapi.tiangolo.com should have more followers than me individually, but it hadn't happened yet. This makes more sense to me. 😅
At some point recently FastAPI passed 100k followers on LinkedIn 💯
Thank you! 🙌
www.linkedin.com/company/fast...
There's also:
X: x.com/fastapi
Bluesky: bsky.app/profile/fast...
Thank you! 🙌
www.linkedin.com/company/fast...
There's also:
X: x.com/fastapi
Bluesky: bsky.app/profile/fast...
August 26, 2026 at 3:05 PM
I didn't see this coming. 👀
I always thought @fastapi.tiangolo.com should have more followers than me individually, but it hadn't happened yet. This makes more sense to me. 😅
I always thought @fastapi.tiangolo.com should have more followers than me individually, but it hadn't happened yet. This makes more sense to me. 😅
One of the few friends I asked if it would make sense to build a cloud for @fastapi.tiangolo.com, in 2023 was @dynamicwebpaige.bsky.social
She said "you have to, not only for humans, but for agents"
This was way before we all used agents for coding
And now at FastAPI Conf! So cool. Full circle. 💃
She said "you have to, not only for humans, but for agents"
This was way before we all used agents for coding
And now at FastAPI Conf! So cool. Full circle. 💃
FastAPI Conf speaker! 📢
@dynamicwebpaige.bsky.social is constantly making sure Google DeepMind AI tools are great for developers. Used to do that at GitHub, TensorFlow, and more. 🤓
Amazing speakers. FastAPI maintainers. An incredible community. Lots of Python.
fastapiconf.com
@dynamicwebpaige.bsky.social is constantly making sure Google DeepMind AI tools are great for developers. Used to do that at GitHub, TensorFlow, and more. 🤓
Amazing speakers. FastAPI maintainers. An incredible community. Lots of Python.
fastapiconf.com
August 25, 2026 at 3:51 PM
One of the few friends I asked if it would make sense to build a cloud for @fastapi.tiangolo.com, in 2023 was @dynamicwebpaige.bsky.social
She said "you have to, not only for humans, but for agents"
This was way before we all used agents for coding
And now at FastAPI Conf! So cool. Full circle. 💃
She said "you have to, not only for humans, but for agents"
This was way before we all used agents for coding
And now at FastAPI Conf! So cool. Full circle. 💃
Reposted by Sebastián Ramírez
The full-stack FastAPI template now serves the React - TanStack frontend with FastAPI ✨
One single app, one single deployment, one single domain. No CORS fights and debugging.
github.com/fastapi/full...
One single app, one single deployment, one single domain. No CORS fights and debugging.
github.com/fastapi/full...
August 24, 2026 at 8:34 AM
The full-stack FastAPI template now serves the React - TanStack frontend with FastAPI ✨
One single app, one single deployment, one single domain. No CORS fights and debugging.
github.com/fastapi/full...
One single app, one single deployment, one single domain. No CORS fights and debugging.
github.com/fastapi/full...
Reposted by Sebastián Ramírez
A bunch of improvements in development workflows and style for emails from Alejandra in the full-stack-fastapi-template, so you can create your app with the best baseline. ✨
The FastAPI Full Stack Template now uses React Email for email templates and Mailpit for local email testing! 📬️
Develop emails with React Email, test them locally with Mailpit, generate and commit the templates, and use them from FastAPI as always. ⚡️
github.com/fastapi/full...
Develop emails with React Email, test them locally with Mailpit, generate and commit the templates, and use them from FastAPI as always. ⚡️
github.com/fastapi/full...
August 21, 2026 at 11:59 AM
A bunch of improvements in development workflows and style for emails from Alejandra in the full-stack-fastapi-template, so you can create your app with the best baseline. ✨
Did you see the famous talk "Pydantic is all you need"?
And how that ended up in AI Labs providing structured output?
It seems Jason Liu is all you need! 🙌
(And we'll all keep making references to the Transformers paper until morale improves).
And how that ended up in AI Labs providing structured output?
It seems Jason Liu is all you need! 🙌
(And we'll all keep making references to the Transformers paper until morale improves).
FastAPI Conf speaker news! 📢
Jason Liu, creator of Instructor, the person that convinced AI Labs to provide structured output with Pydantic (automatic compatibility with FastAPI).
He's bringing us some insights directly from the Codex team at OpenAI 🤖
fastapiconf.com
Jason Liu, creator of Instructor, the person that convinced AI Labs to provide structured output with Pydantic (automatic compatibility with FastAPI).
He's bringing us some insights directly from the Codex team at OpenAI 🤖
fastapiconf.com
August 20, 2026 at 10:57 AM
Did you see the famous talk "Pydantic is all you need"?
And how that ended up in AI Labs providing structured output?
It seems Jason Liu is all you need! 🙌
(And we'll all keep making references to the Transformers paper until morale improves).
And how that ended up in AI Labs providing structured output?
It seems Jason Liu is all you need! 🙌
(And we'll all keep making references to the Transformers paper until morale improves).
Reposted by Sebastián Ramírez
This is the last week to get your early bird tickets for FastAPI Conf, hurry! 🏃
Prices increase next week. 📈
Do you need to convince your boss? Use our convincifyinator: fastapiconf.com/convince-you...
Prices increase next week. 📈
Do you need to convince your boss? Use our convincifyinator: fastapiconf.com/convince-you...
Convince Your Boss · FastAPI Conf 2026
Generate a personalized, business-focused letter to get your manager's approval to attend FastAPI Conf 2026 in Amsterdam.
fastapiconf.com
August 18, 2026 at 10:38 AM
This is the last week to get your early bird tickets for FastAPI Conf, hurry! 🏃
Prices increase next week. 📈
Do you need to convince your boss? Use our convincifyinator: fastapiconf.com/convince-you...
Prices increase next week. 📈
Do you need to convince your boss? Use our convincifyinator: fastapiconf.com/convince-you...
I'm from Colombia 🇨🇴
It was hit by a heavy earthquake these past days. The damage is overwhelming, the loss unmeasurable.
Many places I remember are now destroyed.
Wishing strength for those who lost, and those helping others.
Can you donate too? ⛑️ ayuda.cruzrojacolombiana.org
It was hit by a heavy earthquake these past days. The damage is overwhelming, the loss unmeasurable.
Many places I remember are now destroyed.
Wishing strength for those who lost, and those helping others.
Can you donate too? ⛑️ ayuda.cruzrojacolombiana.org
Emergencia Colombia Sismo
Emergencia Colombia Sismo
ayuda.cruzrojacolombiana.org
August 14, 2026 at 4:47 PM
I'm from Colombia 🇨🇴
It was hit by a heavy earthquake these past days. The damage is overwhelming, the loss unmeasurable.
Many places I remember are now destroyed.
Wishing strength for those who lost, and those helping others.
Can you donate too? ⛑️ ayuda.cruzrojacolombiana.org
It was hit by a heavy earthquake these past days. The damage is overwhelming, the loss unmeasurable.
Many places I remember are now destroyed.
Wishing strength for those who lost, and those helping others.
Can you donate too? ⛑️ ayuda.cruzrojacolombiana.org
It was great to get a sense of how GitHub's security experts think, including how to react, when to act, where to draw the line.
Even more important now that there's an overwhelming flood of AI generated reports consuming maintainer human effort.
tiangolo.com/open-source/...
Even more important now that there's an overwhelming flood of AI generated reports consuming maintainer human effort.
tiangolo.com/open-source/...
FastAPI was part of the @github.com Secure Open Source Fund. 🔒
It helped us ensure we follow best practices securing FastAPI and friends for everyone, including the code and open source management. 🙌
github.blog/open-source/...
It helped us ensure we follow best practices securing FastAPI and friends for everyone, including the code and open source management. 🙌
github.blog/open-source/...
What 50 open source projects taught us about security in the AI era
See how the projects in the GitHub Secure Open Source Fund combined AI-assisted workflows, maintainer expertise, and more to improve project security.
github.blog
August 13, 2026 at 4:46 PM
It was great to get a sense of how GitHub's security experts think, including how to react, when to act, where to draw the line.
Even more important now that there's an overwhelming flood of AI generated reports consuming maintainer human effort.
tiangolo.com/open-source/...
Even more important now that there's an overwhelming flood of AI generated reports consuming maintainer human effort.
tiangolo.com/open-source/...
Reposted by Sebastián Ramírez
FastAPI Conf news! 📢
@marcelotryle.bsky.social , maintainer of Starlette and Uvicorn, the web components behind FastAPI, will join us as a speaker in Amsterdam! 🙌
Get your tickets: fastapiconf.com
@marcelotryle.bsky.social , maintainer of Starlette and Uvicorn, the web components behind FastAPI, will join us as a speaker in Amsterdam! 🙌
Get your tickets: fastapiconf.com
August 13, 2026 at 1:27 PM
FastAPI Conf news! 📢
@marcelotryle.bsky.social , maintainer of Starlette and Uvicorn, the web components behind FastAPI, will join us as a speaker in Amsterdam! 🙌
Get your tickets: fastapiconf.com
@marcelotryle.bsky.social , maintainer of Starlette and Uvicorn, the web components behind FastAPI, will join us as a speaker in Amsterdam! 🙌
Get your tickets: fastapiconf.com
Reposted by Sebastián Ramírez
Here's the full-stack-fastapi-template 0.12.0 🎁
More modern, simpler, easier.
Too many improvements to fit here, but let's start:
You can now simply click the "Use this template" button in GitHub to create a new repo, possibly private. ✨
github.com/fastapi/full...
More modern, simpler, easier.
Too many improvements to fit here, but let's start:
You can now simply click the "Use this template" button in GitHub to create a new repo, possibly private. ✨
github.com/fastapi/full...
August 12, 2026 at 10:08 AM
Here's the full-stack-fastapi-template 0.12.0 🎁
More modern, simpler, easier.
Too many improvements to fit here, but let's start:
You can now simply click the "Use this template" button in GitHub to create a new repo, possibly private. ✨
github.com/fastapi/full...
More modern, simpler, easier.
Too many improvements to fit here, but let's start:
You can now simply click the "Use this template" button in GitHub to create a new repo, possibly private. ✨
github.com/fastapi/full...
Python is the most reviewable language 🐍
August 11, 2026 at 7:29 AM
Python is the most reviewable language 🐍
Remember this image from the James Webb space telescope?
Wanna know how the science data here is transferred to scientists around the world using @fastapi.tiangolo.com ?
And also the images we will see in January from The Roman Telescope (about to be launched).
Come to FastAPI Conf. 🌠
Wanna know how the science data here is transferred to scientists around the world using @fastapi.tiangolo.com ?
And also the images we will see in January from The Roman Telescope (about to be launched).
Come to FastAPI Conf. 🌠
August 10, 2026 at 10:29 AM
Remember this image from the James Webb space telescope?
Wanna know how the science data here is transferred to scientists around the world using @fastapi.tiangolo.com ?
And also the images we will see in January from The Roman Telescope (about to be launched).
Come to FastAPI Conf. 🌠
Wanna know how the science data here is transferred to scientists around the world using @fastapi.tiangolo.com ?
And also the images we will see in January from The Roman Telescope (about to be launched).
Come to FastAPI Conf. 🌠
Coding agent thingies extending what you can research and build combined with giving them FastAPI Cloud to deploy feels like such a superpower.
First print("hello world") vibes ✨
I just replaced 50 GitHub personal access tokens with 3 apps, while making everything more secure.
First print("hello world") vibes ✨
I just replaced 50 GitHub personal access tokens with 3 apps, while making everything more secure.
August 9, 2026 at 9:22 AM
Coding agent thingies extending what you can research and build combined with giving them FastAPI Cloud to deploy feels like such a superpower.
First print("hello world") vibes ✨
I just replaced 50 GitHub personal access tokens with 3 apps, while making everything more secure.
First print("hello world") vibes ✨
I just replaced 50 GitHub personal access tokens with 3 apps, while making everything more secure.
Reposted by Sebastián Ramírez
Early Bird tickets for FastAPI Conf are still available, but only until August 23 🐓
Get yours before prices go up! 🎟️
You don't want to miss what we'll announce there 🤫
fastapiconf.com
Get yours before prices go up! 🎟️
You don't want to miss what we'll announce there 🤫
fastapiconf.com
FastAPI Conf 2026 — Amsterdam
The premier conference for FastAPI developers. October 28, 2026 — Amsterdam.
fastapiconf.com
August 6, 2026 at 12:20 PM
Early Bird tickets for FastAPI Conf are still available, but only until August 23 🐓
Get yours before prices go up! 🎟️
You don't want to miss what we'll announce there 🤫
fastapiconf.com
Get yours before prices go up! 🎟️
You don't want to miss what we'll announce there 🤫
fastapiconf.com
Two hard problems in computer science:
1. cache invalidation
2. naming things
@nucleonjohn.bsky.social is (very cleverly) taking care of the cache invalidation for you, so you can focus on naming your app. 🤓
You code. We cloud. ⚡️
1. cache invalidation
2. naming things
@nucleonjohn.bsky.social is (very cleverly) taking care of the cache invalidation for you, so you can focus on naming your app. 🤓
You code. We cloud. ⚡️
Static assets are now smartly cached on FastAPI Cloud, powered by Cloudflare. ⚡️
Most are served directly by the high-performance CDN, without reaching your Python app.
The cache resets automatically on every deployment.
Just use standard @fastapi.tiangolo.com . Zero config. 😎
Most are served directly by the high-performance CDN, without reaching your Python app.
The cache resets automatically on every deployment.
Just use standard @fastapi.tiangolo.com . Zero config. 😎
August 5, 2026 at 10:48 AM
Two hard problems in computer science:
1. cache invalidation
2. naming things
@nucleonjohn.bsky.social is (very cleverly) taking care of the cache invalidation for you, so you can focus on naming your app. 🤓
You code. We cloud. ⚡️
1. cache invalidation
2. naming things
@nucleonjohn.bsky.social is (very cleverly) taking care of the cache invalidation for you, so you can focus on naming your app. 🤓
You code. We cloud. ⚡️
Reposted by Sebastián Ramírez
New FastAPI Conf speaker! 📢
@sa.muelcolvin.com , creator and founder of @pydantic.dev ✨
FastAPI is built on top of Pydantic and the two ecosystems are a perfect match. Of course we had to have him! 🤝
Early bird ending soon, got your tickets? fastapiconf.com
@sa.muelcolvin.com , creator and founder of @pydantic.dev ✨
FastAPI is built on top of Pydantic and the two ecosystems are a perfect match. Of course we had to have him! 🤝
Early bird ending soon, got your tickets? fastapiconf.com
August 4, 2026 at 10:12 AM
New FastAPI Conf speaker! 📢
@sa.muelcolvin.com , creator and founder of @pydantic.dev ✨
FastAPI is built on top of Pydantic and the two ecosystems are a perfect match. Of course we had to have him! 🤝
Early bird ending soon, got your tickets? fastapiconf.com
@sa.muelcolvin.com , creator and founder of @pydantic.dev ✨
FastAPI is built on top of Pydantic and the two ecosystems are a perfect match. Of course we had to have him! 🤝
Early bird ending soon, got your tickets? fastapiconf.com