Who We Are

Engineers and builders who've lived the pain of navigating AI-assisted work. We've shipped AI products at scale, led technical communications at major tech companies, and experienced the frustration of AI development with inadequate tools.

So we built the fix.

We believe

Documentation is Core Infrastructure

Context Belongs in Git, Not SaaS

AI Needs Understanding, Not Just Speed

The .alexandria/ Folder

Living Documentation is the Key to Context Engineering

Other tools store context in the cloud. We store it in Git. That's not a feature difference—it's architectural. Architecture diagrams, API specs, decision records—all version-controlled with your code. When implementation changes, documentation is flagged for review. Context that stays current.

"Context versioned with code, not buried in Confluence."

# Your Repository
repo-root/
├─ src/
├─ tests/
├─ package.json
└─ .alexandria/
├─ app.mdMain entry point
├─ api_gateway.mdAPI layer
├─ database.mdData schema
├─ auth_service.mdAuthentication
└─ metadata.yamlKeeps it current

How Teams Use Principal AI

Visual Code Understanding

See what Agents are actually building

Quality Radar

Know when things are off

Living Documentation

Keep intent and code aligned

Optimized for Agents

Built for agent-written software

Multi-Project Workspaces

Agents reason across all repos

Live Team Collaboration

See who's working where

As software becomes autonomous, understanding becomes the bottleneck. Principal removes it.

Perfect for:

Solo Developers

Your Personal Time Machine

The 'why' behind every decision, timestamped and searchable. Context returns when you do.

Small Teams

Shared Memory Without Meetings

Team knowledge lives in git. New devs read decision history. Context outlasts turnover.

Engineering

Architecture as Context

Architecture decisions inform future code. Agents check docs before proposing changes.

Product

Specs That Reflect Reality

Specs stay synchronized. Code changes flag specs. Intent flows from research to implementation.

Communications

Brand as Code

Brand voice is versioned, not out of sync. Agents reference messaging when writing copy.

Leadership

Strategy That Cascades

Strategy informs every line of code. OKRs connect to features. One query, not archaeology.

A picture is worth a thousand lines of code.

Join the Alpha

Explore real codebases in the Gallery. Or download the full ADE and try it on your own projects.

Frequently Asked Questions

Principal AI works with any Git-based project. Living Documentation supports all major languages including JavaScript/TypeScript, Python, Java, Go, Rust, and more. Framework-agnostic—works with React, Next.js, Django, Spring, and any codebase structure.