The AI Engineer that understands your product
Keystone joins your team, knows what your product is actually doing, and maintains your codebase like a human would.




Our Vision
Removing Civilizational Bottlenecks
The pace of software development is a civilizational bottleneck.
Tools like Cursor, Codex, and GitHub Copilot have enabled developers to build faster than ever before—but engineering productivity hasn't drastically improved.
Why? Because we've trapped human engineers in an endless loop of reviews, firefighting, debugging sessions, and pinging team members on Slack for missing context.
We've automated the writing of code, but not its maintenance.
The core problem here isn't speed or intelligence—it's lack of context. Current tools don't know your team's patterns, your infrastructure's constraints, your users' actual behavior. They don't understand what's happening in production, trace through your microservices, or understand the unwritten rules that make your system work. They're engineers operating with glasses made with lenses of lead.
Keystone is bridging the gap, closing the loop, that makes autonomous software development possible.
That makes a human engineer less of a coding agent's servant, gathering context from one system or another to put into a text box—and more of a designer specifying how their system should work technically.
Imagine armies of specialized agents at your command—not writing code, but operating your entire system. Intelligences that monitor production, reproduce issues, propose fixes, validate changes, and maintain your product.
These intelligences won't be external tools—they'll join your team and speak your language—standing at attention to bring your vision to life.
The next leap in human progress requires software that builds and maintains itself.
Every transformative technology—from the printing press to the internet—removed a bottleneck in human coordination. Software development is now that bottleneck. Every company is a software company, but engineers spend the bulk of their time just fixing.
Let's build a future where software never breaks.
The future of software maintenance
Join us in redefining what's possible with AI-assisted development.