Recursive AI

We build open tools for software that agents and people use.

Open-source libraries, APIs that agents can call, and free tools that run in your browser.

What we’re building

Open-source libraries

Available

Focused libraries for documents, data, scripting, machine learning, graphics, sound, games and simulation. Most are C# for .NET; oneyaml is also native to Rust and Go. One more is in progress and eight are queued.

Documents and data
oneyaml, onepdf, onehtml, onerender, onearchive, onemail, onecrypto

Scripting
oneecma

AI and machine learning
onemodel, oneocr

Graphics and sound
oneimage, onefont, oneshader, oneaudio, onemedia

Games and simulation
onegame, onemath, onepath, onephysics

All libraries What’s next

APIs for agents and apps

Coming soon

Hosted APIs for documents and data, designed for AI agents to call. Pay as you go, with a free allowance first.

See the APIs

Free web tools

Coming soon

Everyday file and data tools that run in your browser. Free, no account.

See the tools

Built by one person and a fleet of agents

Recursive AI is Kurtis Welch and a fleet of AI agents working on Alera, the system he built for making software with agents. Agents write, test and ship the code; Kurtis decides what to build. Sponsorship helps fund the open-source work it produces.

How Alera works About Kurtis

What we built this week

A public log of what we finish each day. Highlights:

    Read the full devlog

    Want to know more about Alera, how you can sponsor our work, or how Alera might accelerate your own projects?