Justus Jonas Otto

Computer Science · Kiel University · Kiel, Germany

I am Justus Otto, from Kiel, and a computer science student at Kiel University since 2023. On the side I study languages, at the moment Chinese (HSK 4) and Ukrainian (B2). I love languages and the cultures they come from, and most of what I build exists because I wanted study tools that work the way I learn. I want to work on the tools that let people get real work out of AI models, at one of the companies that make them, and I can start now. Most of what I built this year was practice for that.

Over the last year I have built those tools by directing Claude Code, and most of the code was written by the model. My part is to say precisely what I want and to decide whether what came back is good enough.

Atlas & Cursus

persistent memory and orchestration for coding agents · since May 2026

  1. Atlas is a knowledge vault, markdown files that every Claude Code session loads, holding the decisions and the mistakes of every session before it.

  2. Each session declares in a file which part of the vault it may write, and a commit hook stages nothing outside that declaration.

  3. When a session ends it writes down what it did and what is still open, and the next one reads that back.

  4. Cursus is the orchestration layer, a managing seat that plans the work, hands it to other sessions and judges what comes back, together with the lanes, write partitions and review loops those sessions run under.

  5. Pharos is the interface layer above both, where sessions and queues are shown, notes and braindumps come in and get sorted, and sessions are started.

  6. The public part is Gedächtnis, a Claude Code plugin that gives a vault of your own the memory and the enforcement, the hooks that load it and refuse what breaks its rules, at github.com/justusotto/gedaechtnis.

  7. The orchestration and the interface above it are private, with over 3,600 test cases.