Most people skip over the server-side relay part.

That’s where Q402 quietly does the heavy lifting.

After the user signs:

→ Your backend sends the signed payload to Q402

→ API key verifies who you are

→ Q402 checks your gas tank (before anything breaks)

→ Then you don’t broadcast — Q402 does

Why this matters:

No direct chain interaction from the user

No fragile frontend execution

No failed tx because gas ran out mid-flow

Everything is routed through a controlled layer.

So instead of: User → Wallet → Chain (and hope it works)

You get: User → Signature → Backend → Q402 relay → Guaranteed execution

It’s not just infrastructure.

It’s reliability engineered into the flow.