Principle 01
Trust is the product.
Not compliance theater. Not checkbox automation. The end goal is that people and organizations can rely on each other, and we build the tools that make that possible.
Read moreYour AI now acts in your name. Your reputation rides on what it does. We keep you in control of every move, and let anyone check the record.
We call it
Verifiable AI.
The one place we work
You can't see inside a model. So we work where it acts.
- 01
The model stays closed.
You will never fully see why a model produced what it did. It doesn't open up for inspection, and every product that pretends otherwise helped burn the trust the industry is now trying to win back.
- 02
The edge is where it gets real.
A model on its own changes nothing. The consequence arrives the instant it calls a tool, takes an action, moves data, or asks another system to rely on it. That crossing is the only place anyone can actually step in.
- 03
Guard the edge, and faith becomes proof.
Put your rules on every move a model makes past itself. Decide before it acts, not after. Turn each move into a record anyone can check. The reasoning stays closed; the behavior becomes something you can prove.
What we build
Stones AI works at that line and nowhere else. We put your rules on every move an AI makes beyond the model, and turn each one into evidence you can stand behind. VAiDR does it for the actions your agents take. trust.json does it for the trust two systems extend each other.
Who we build for
For companies whose AI now acts in their name.
Teams shipping their first AI agent into production. Regulated companies who have to answer for what their models do. Firms where a single AI decision can move money, deny a claim, or land in front of a regulator.
If that's any of you, we're building for all of you. Your reputation now rides on what your AI does in your name, and on whether you can prove it. Verifiable AI is for anyone serious about standing behind it.
Most of that work doesn't happen in Silicon Valley. We're a Texas company, and we build like it.
What we believe
Three principles. Every product we ship.
Principle 02
Humans always decide.
Every product we ship keeps the human in the seat that matters. We build assistants, not autopilots.
Read morePrinciple 03
Show your work.
Every claim cited, every recommendation grounded, every output traceable. Trust collapses the moment a buyer can't tell where an answer came from.
Read moreIn build · Design partner pilots H2 2026
The evidence layer for AI accountability. Audit-grade, verifiable, client-controlled records of what your AI agents actually did, credible to the regulators, courts, and insurers. Your policy runs before the model is called, and every decision becomes a signed, independently witnessed record.
In build · Design partners welcome
trust.json
Live, verifiable vendor trust. A SOC 2 PDF proves you were compliant at audit time. trust.json proves your posture is current right now, in a signal buyers and AI agents can check for themselves, and one that tells the truth the moment something slips.
Get in touch
Building something where trust is the product?
We'd love to hear from you, whether you're a customer, a potential collaborator, or someone building in the same space.