Alejandroao launches Tau, an open-source Python framework for building AI agent harnesses and TUIs from scratch

here’s the inspiration behind the name btw https://twotimespi.dev/why-tau/

introducing tau τ — an educational agent harness that teaches you how to build agent harnesses

i will be publishing tutorials and demos on how to use it to create your own TUIs, harnesses, extensions, etc.

Happy Tau Day!! 🤓

👉 https://twotimespi.dev/

@omaclaren thanks! let me know which ones so i can give them a shoutout

ah, you committed a sin here, @_alejandroao should have used tau to build tau after week 2 :)

good stuff!

@badlogicgames has me considering a TS version

from an engineer continuing education standpoint this is an excellent substrate

i cant with python personally (it's a great language) and think about of folks would like a TS version

@badlogicgames whoopsie 😅 it's just that the automated PRs run at night and in the morning i go over them with tau. will hook tau as a cron job from now on 😅

@_alejandroao interesting

@_alejandroao Beautiful. There's so much nuance and rough edges yo have to handle building a production harness (learned a lot the hard way building @usetoyo).

@_alejandroao @dylayed awesome educational resource ty for putting this out!! love the simply laid out abstractions

The educational focus is awesome. I've been building something similar over the past month after watching your agentic harness videos. Learned a ton about context engineering, memory, tools, etc. along the way.

Curious: are you thinking about generalizing Tau beyond coding tasks? That's the piece I'm currently wrestling with (profiles, user-configurable tools, hooks, skills, etc.). Would love to hear your take.

If you're interested: https://github.com/Sagnnik/liteharness

@_alejandroao this is great!

@_alejandroao Damn this is great stuff dude!

@_alejandroao Great job my friend! I should probably start my own and name it Eta :)

@_alejandroao This is super cool Alejandro, I've been banging on about understanding and controlling agents for ages now and this sort of tool is perfect for that! Love it!

@Vtrivedy10 @dylayed means a lot viv! i'm a huge fan of your work btw!

@_alejandroao How does it fail in production?

@_alejandroao tell me more

@_alejandroao Looks very cool! Although not a pi extension I feel a bit bad for all the people who’ve already made things called ‘tau’ based on pi tho.

@badlogicgames @marlene_zw tau is a separate mathematicaly symbol, it's not like anyone invented that symbol from pi lol

@dctanner @usetoyo great stuff! best way to learn is by doing 💪 i wont stop until we have more agent harnesses than js frameworks :P