Samuel Colvin
sa.muelcolvin.com
Samuel Colvin
@sa.muelcolvin.com
Building Pydantic Logfire - uncomplicated observability for Python. Sequoia Scout.
Some personal (very belated*) news, I've moved to the bay area!

Let me know if you're in SF or Palo Alto and want to get coffee.

Also, last reminder that we have the inaugural Py AI meetup with @pydantic.dev in SF on Tuesday. Register now: luma.com/gjtfecc7

* I actually got here in the summer.
November 10, 2025 at 2:38 AM
Just putting this here. Not much more to say.

@pydantic.dev
October 15, 2025 at 8:17 PM
Pull request to add support for OpenAI's Agent SDK is already up in @logfire.pydantic.dev.

github.com/pydantic/log...
March 11, 2025 at 5:32 PM
Amazing week in the US at AI Engineer and in SF.

Interest in @pydantic.dev AI and @logfire.pydantic.dev was phenomenal

Turns out developers want to take a bet on Pydantic's track record of developer experience, engineering correctness and open standards, not lock-in and crazy expression languages!
February 26, 2025 at 11:59 PM
New starter project just landed in @logfire.pydantic.dev

Uses pydantic.run to let you send data to logfire without leaving your browser.

(and yes, I deleted that write token before posting this 😉)
February 7, 2025 at 7:15 PM
Do I know anyone from @github.com who can help with something urgent?

We moved to github enterprise, which seems to have introduced a $1k billing limit for actions runners which I can't change without support.

Right now that means the entire @pydantic.dev team is blocked.
February 6, 2025 at 2:27 PM
I forgot to mention when introducing pydantic.run:

* it's open source and MIT licensed
* you can run it yourself with just @cloudflare.social workers
* obviously it's based on the amazing work of Pyodide to run Python in the browser

github.com/pydantic/pyd...
January 31, 2025 at 1:57 PM
Example of generating mermaid diagrams directly from graphs.
January 15, 2025 at 8:35 PM
I'm shocked by how easy it is to run PydanticAI with a model running logically.

Here we have Ollama running llama3.2 locally, being used by @pydantic.dev AI extracting structured data from an input.
December 6, 2024 at 9:27 PM
I take enormous pleasure in this: "uv run" is 6 characters same as "python", so you can switch between them and there's no jump.

One of uv's best features.

ai.pydantic.dev/examples/
December 3, 2024 at 4:40 PM