The AI that shows its work.
Built in Europe, on purpose.

Your CPC is up 15.5% year over year. Industry surveys put 30 to 40 percent of seller ad spend on poorly-optimised campaigns — and the tools you pay to fix it cannot tell you which 30 to 40 percent. The category answer has been more AI, less explanation. Spend more, trust harder, hope the algorithm is on your side.

We do not think that is good enough. Mirox is the answer in the other direction: sixteen specialised agents that each leave a trace next to the bid they propose, seven safety layers between the AI and your ad budget, and a free Simulation Mode that runs on your real account so you can read every decision the system would have made before any cent moves.

Multi-marketplace native from day one — because cross-border campaigns without localisation cost sellers 28% in ACoS and 42% in CTR, and the data has been on the record for two years. Per-marketplace thresholds, currencies, rate limits and multilingual semantic — first-class architecture, not flags on a single global product.

We ran a private Founding Beta Program with ten Founding Members through 2026 Q2 to make sure the trust curve and the case-study curve travelled together. That programme has closed with its seats filled, and Mirox is now open to every seller.

Most of the category charges 3% of ad spend on top of a base fee. That makes the vendor's revenue rise with the bill it is supposed to lower. We took the percentage out of the model. €149, €399, or €899 a month — the price is on the page; the price is the price.

Simulation Mode is free for 30 days. You connect Amazon Ads, the system runs on your real account in read-only, and you watch what every bid would have been — for a full month, before any cent moves. There is no demo wall and no card on file, so nothing converts on its own when the month is up. We picked 30 days rather than no limit because a number we honour is worth more than a promise we quietly walk back, and because two weeks is already enough to judge the traces.

The master line — "The AI that shows its work." — is what we hold ourselves to. If a bid changes and we cannot tell you why, we have not built the feature yet.

We are a small founder-led team. Our infrastructure runs on managed VPS hosting in Castelo Branco, Portugal, with Hostinger International Ltd. Our cap table, our staff and our compliance posture are EU-resident on purpose — the GDPR alignment is not a tax we pay, it is the architecture we already preferred.

We kept that first programme to ten seats on purpose — we would rather over-deliver to ten sellers than under-serve a hundred. Mirox is open to every seller now, and every account is still a direct line to the team that ships the code.

If you want to talk to us — about a fit, a feature, a comparison row that reads wrong, a vulnerability, or a job — write to info@mirox.pt. We reply.