GalaxyBrain launches local-first info OS

This is a strong take on personal knowledge management: less note app, more programmable local data layer. The MCP hook makes it especially interesting for AI developers who want their workspace to be both human-editable and machine-addressable.

• –Variables and formulas turn notes into a lightweight computation model, which is more useful than plain backlinks for structured workflows
• –Local JSON storage is a real differentiator for portability, inspection, and automation, especially compared with opaque cloud-first PKM tools
• –The built-in HTTP API plus MCP support lowers the friction for agent workflows and custom integrations
• –The main risk is complexity: this kind of power only sticks if the editing experience stays simple enough for non-technical users
• –The product sits at the intersection of notes, spreadsheets, and agent tooling, which is a crowded space but still underexplored when it comes to local-first architecture