Mirox is open to everyone.
The ten-seat Founding Beta Program has closed. Simulation Mode is free for 30 days with no card, Starter and Growth are self-serve, and the $5K/month qualification gate is gone. What the beta was for, and what changes today.
As of today, Mirox is open to every Amazon seller. Simulation Mode is free for 30 days and takes no card. Starter and Growth are self-serve — you fill in a form, Stripe takes the payment, and you are running a few minutes later. Scale still starts with a conversation, for reasons we will get to.
The waitlist is gone. The application form is gone. The $5,000/month ad-spend qualification gate is gone. If you sell on Amazon, you can use this.
What the beta was actually for
For the last stretch Mirox has been invite-only: a ten-seat Founding Beta Program, hand-picked, with a signed agreement and a weekly call. That was not scarcity marketing. There was a specific thing we could not learn any other way.
Simulation Mode exercises roughly half the code a paying customer touches. It reads the account, runs the agents, writes the traces — and moves nothing. The other half is the half that spends money: the SP-API write path, the kill switch under real pressure, the Shield circuit breakers, the post-bid telemetry, the billing stack. You cannot harden that with a staging account. You need real bids, on real budgets, with someone who will phone you if it goes wrong.
Ten sellers did that. The programme has closed, the seats were filled, and the live stack came out the other side with the write path, the breakers and the billing flow exercised on real money. That was the entire point, and keeping the door shut past it protected nobody.
What you get, and what it costs
Simulation Mode is free for 30 days, no card. It connects to your real Amazon Ads account read-only, watches your campaigns, and writes a full decision trace for every bid it would have placed — the Bayesian inputs, the alternatives it ruled out, and which of the seven safety gates it checked. Nothing moves. Five ASINs, one marketplace. Disconnecting OAuth stops it within seconds.
It is a tier, not a trial. There is no clock on it. Run it in parallel with whatever you use today for a month, and if the traces never show you a decision worth having, you have lost nothing but the OAuth click.
Starter and Growth add live bidding, more ASINs and more marketplaces, and you subscribe to them without talking to anyone. Flat monthly fee, month-to-month, cancel from the dashboard. Never a percentage of your ad spend — we wrote at length about why that model is broken and we are not going to quietly adopt it later.
Scale is the one thing you cannot buy with a card, and we want to be straight about why. It ships custom threshold tuning, a signed DPA and hands-on onboarding. Those are commitments made by people, not toggles flipped by a checkout page, so it starts with an email. The price is still on the pricing page — there is no demo wall and no "contact us for pricing."
What has not changed
Everything the pillars said. Every bid is traceable. The seller keeps the kill switch, per marketplace, per campaign, per ASIN. Simulation Mode stays free. Data is exportable as CSV with the original Amazon IDs intact, along with the traces that produced it, and it stays exportable if you leave. There is no annual lock and no data hostage clause.
The ten Founding Members keep the terms they signed. Nothing about their accounts changes today.
The honest part
Self-serve signup means there is no longer a human between a stranger's card and the product. We have taken that seriously in the places it matters: an entitlement claim on the Scale tier that described a feature we had not built was cut before launch rather than sold, and the two legacy registration paths are permanently closed so that opening the door could never quietly re-open three overlapping ways in.
It is still week one. Someone is watching the logs daily, and the refund policy is one we can honour without an argument. If something breaks on your account, write to support@mirox.pt — the reply target is the same working day and the hard ceiling is two.
If you would rather look before you decide anything, that is exactly what Simulation Mode is for. Start there, or read the tiers first at mirox.pt/pricing.