Partners And Stack

We Build The System.
These Run
Underneath It.

Custom does not mean built from nothing. Payments, identity, email and hosting are solved problems, handled by companies whose entire business is getting them right and who employ security teams larger than most of our clients. We build the part that is genuinely yours on top of them, and we tell you exactly what runs where.

Every account is opened in your name, not ours. You can change studios without changing platforms.
Scroll
// Federation

Agents That Can Prove
What They Did.

ROSÉ
Federation
The execution primitive for AI
// Sister Company

ROSÉ Federation is enterprise infrastructure that proves what an AI agent actually did. Cryptographic execution records, trusted ordering and tamper proof timestamps, produced at the moment a decision is taken rather than reconstructed afterwards under pressure. Six specialist systems operating as one federation.

It matters here because we put autonomous agents inside the software we build. The moment an agent takes a consequential action on your behalf, the question stops being whether it worked and becomes whether you can show what it did. ROSÉ is the difference between telling a regulator, an insurer or a customer what your software does and proving it.

Immutable Execution RecordsTrusted OrderingTamper Proof TimestampsEU AI Act Evidence
Visit the federation →
// The Stack

Boring Where It Should Be.
Custom Where It Counts.

Nobody should be inventing a payment processor in 2026. These are the pieces we deliberately do not build, chosen because they are proven, documented, and can be handed over to you intact on the day the work is done.

// The Part That Matters

The Accounts Are
Opened In Your Name.

This is the detail that separates a studio from a platform. Your Square account is yours. Your Firebase project is yours. Your domain, your data, your billing relationship, all of it in your name from the first day, with us added as a collaborator you can remove.

It means the software keeps running whatever happens to us, and it means switching studios never means switching platforms or migrating your customers again. Nothing about the way this is set up depends on you staying.

// Free Assessment

Tell Us What Your
Software Is Not Doing.

Send us what you are running today and where customers are falling through. You will get a straight answer on what is recoverable, what it would take to fix, and whether it is worth doing. If your setup is already fine we will tell you that instead of selling you something.

LinkedInlinkedin.com/company/five-thirty-eight
BuildingLocal and small businesses nationwide
ResponseWithin one business day, from a person
CostThe assessment is free with no pitch attached

The form is taking a moment to load.

Open it in a new tab
Close ×