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In one line
Bijalog is a decision log for working with AI: one line of plain text per decision, on your own machine, readable by any model.
In one paragraph
AI is extraordinarily capable and completely forgetful. Bijalog writes each real decision down once — when, a permanent ID, its status, and the decision in plain language — in a file on your own machine. Any AI reads it at the start of a session and begins from where you actually are, not from zero. You approve every line; nothing becomes true without you. Free and open source under the MIT licence.
In about 150 words
Every conversation with an AI starts empty. The reasoning behind a design change, the experiment that failed, the convention agreed three months ago — none of it survives unless you type it again. Most people solve this by repeating themselves; some paste in ever-longer summaries. Both are the same tax, charged daily.
Bijalog takes the other route: write each real decision down once, as a line of plain text you own. Five fields — when, a permanent ID, its status, tags, and the decision itself. That is the entire format. Any AI can read it, and so can you in twenty years, without the software that made it.
What separates it from the AI-memory tools is who wrote it. Those store what the agent experienced, extracted automatically, so nothing was ever approved by anyone. Bijalog is a record by a person, approved deliberately, held by you.
Free. Open. Yours.
Three things you can check
Portability, tested
On 18 September 2026 a log written with one company's AI was handed to another company's model in a clean chat — no plugin, no import, no explanation of the format. It answered correctly and quoted two 26-character identifiers, both real, both verified by searching the file. The result is published in the repository: https://github.com/JcCuddlybear/bijalog/blob/main/docs/PORTABILITY.md
The same test produced the sharper finding. Asked to write a plain text file back, that model produced a Google Doc: content in a provider's format, unreadable by the machine that asked for it, invisible to a backup, gone if the account closes. Told explicitly to write plain text, it complied. Reading is portable everywhere; writing is where the platform tries to take it back.
Identifiers cannot be delegated to a model
Across 43 projects, 1,681 lines carrying an identifier were checked on 18 September 2026. In the first month, 315 of 446 were malformed or duplicated. In the last month, with the minting moved into code, 0 of 666. A language model asked for a random identifier does not produce randomness — it produces something shaped like the identifiers it has just read, which is worse than a bad random number, because it looks right, sorts approximately right, and collides with a real one at some unknowable later date.
The integrity tooling is not behind a paywall
The format, the tools and the scripts that prove the log is intact are all free. A standard whose central claim only paying users can verify is not a standard.
What it does not do
It records decisions, not outcomes. No line says "and that turned out badly". It does not organise your files. It will not make you write things down. And it does not make a model truthful, aligned or wise — it makes the use of AI safer for the person doing the using, inside one clearly drawn surface.
Licence and terms
Free and open source under the MIT licence, code and documentation alike. There is no account and no server. Your files are yours.
The name Bijalog is coined and, on a web search of 14 August 2026, unique — no product, company, repository or domain collision. It is not trademark registered and no register search has been done.
The maker
Christian Jelen (pen name J.C. Cuddlybear) is a London and Hastings based senior VFX supervisor and multidisciplinary artist with around thirty years in film, games and creative technology. Credits include Wicked, Game of Thrones, Horizon Forbidden West, Aladdin and The Pirates!. He is an Epic Unreal Fellow and has taught at Westminster University, London Metropolitan and Citylit. Bijalog came out of his own production work, not out of a plan to make a product.
Where to find it
The code, the README and the licence: https://github.com/JcCuddlybear/bijalog
What else is built here: https://jayceee.com/ailab