I Built ContextFabric: One Private Memory Layer Across Claude, ChatGPT, Cursor, and More with Local Gemma 4

This is a submission for the Gemma 4 Challenge: Build with Gemma 4

AI tools remember now, but they remember in separate silos. Claude has projects, ChatGPT has personalization, Cursor indexes your codebase, and somehow you still end up re-explaining the same decisions, constraints, preferences, and project state every time you move between tools.

That felt backwards to me.

If memory is becoming part of the AI operating system, then personal context should not be trapped inside one vendor's product. It should be portable, permissioned, local-first, and owned by the user.

So I built ContextFabric: a local AI memory layer powered by Gemma 4.