Deterministic control for probabilistic AI
Lock the decision. Build from the record.
DatumLock is a control layer for AI-assisted projects. Brainstorm freely with the AI. Lock each decision as canon. From then on, the AI builds only from what you locked.
auth.methodemail and magic linkphase1.scopeweb only, no mobile appbillingdeferred to phase 2search.filtersunder discussionAI projects drift.
You agree on a design, then three sessions later the model forgets a decision, improvises a feature nobody asked for, or quietly rewrites something that was settled. Each fix costs more than the original build. The longer the project, the worse the drift.
The cause is simple. Nothing separates what was decided from what was merely discussed.
Discuss, lock, build.
Brainstorm
Chat with the AI to find the structure, edge cases, and functionality your project needs. Nothing is final yet.
Lock
When you agree on a piece, you lock it. Each locked piece becomes a canon document and cannot be changed by accident.
Build
The AI may only reference canon while it builds. New ideas get parked for after phase one instead of leaking in.
Every decision takes the same path.
Nothing reaches the record without passing four stages. Select a stage to see what happens.
Revise is available at any point before commit.
The rules are enforced, not suggested.
A router sits between you, the AI, and your records. It accepts eight actions and nothing else.
- The AI proposes. The router decides. The model drafts and explains, but it never changes the record on its own.
- Committed means immutable. A locked decision cannot be edited. Changing it takes a new, reviewed decision.
- Only a commit writes outside. Every write is read back and verified before it counts.
- Your tools stay yours. Committed decisions live in Notion. Tasks can be generated into ClickUp.
Where it stands.
As of September 2026. The control layer is the finished part. The chat interface on top of it is in build.
Get early access.
Tell me what you're building with AI. I'll write back when there is something to try.