AI agents in your process
Agents that watch listings, prices, inventory, ads, and supply chain — and act on rules you define. Plugged into the tools you already use.
SellerUp builds AI automation for Amazon and Allegro sellers: agents watch listings, prices, inventory, ads and supply chain — and act on rules you define. Not “another tool”, but part of your process.
Start with the role that hurts most. Add agents when the value is obvious.
What we build
End-to-end engineering for marketplace sellers — built around your data, your operations, your goals. Not a SaaS subscription. A system that becomes part of your team.
Agents that watch listings, prices, inventory, ads, and supply chain — and act on rules you define. Plugged into the tools you already use.
We map your operations, find the repetitive bottlenecks, and ship pipelines that run on their own — keeping your team focused on strategy.
Internal dashboards, server-side platforms, integrations with marketplaces and suppliers. Built specifically for how your business actually works.
Data sources
SellerUp AI agents
Who gets the reports
No — you are buying a build, not a licence. We design the automation around your business, it runs on your infrastructure, and the code and data belong to you. There is no per-seat fee and no dependency on a SellerUp product staying alive. After launch you either keep us on support or take the system over with documentation and training.
Amazon is the core, and Allegro is the second line, with a dedicated service track for the Polish market. Beyond those we build integrations for Kaufland, Castorama, Leroy Merlin, eMAG, Bol and other European platforms. If a platform publishes a usable API, an agent can read and write against it; if it does not, we will say so before you commit.
Exactly as autonomous as you make them. Every agent runs between two poles you choose: “notify only”, where it watches and reports, and “act within limits”, where it changes prices, budgets or listings inside boundaries you define. Critical decisions can always stay with a person, and the limits are settings you can tighten at any point.
The repetitive parts of marketplace operations. In practice that means listing and buy-box monitoring, repricing on your own margin and competitor logic, stock control with reorder points and out-of-stock risk, daily ad checks with stop-rules for money-losing targets, and review requests with drafted replies. Anything that is a judgement call stays with your team.
Through the marketplaces’ own documented APIs and the tools you already run. On Amazon that is the Selling Partner API; on Allegro the Allegro REST API. Agents reach your internal tools through the Model Context Protocol, which gives them scoped access rather than a blanket key. Every interface we use is linked above this FAQ.
Because marketplace APIs enforce rate limits. Amazon’s SP-API publishes usage plans that cap how often an application may call each endpoint, so an agent that hammered the API continuously would simply be throttled. We set polling frequency per task — prices and stock more often, settlement data less — so the important signals arrive early without burning your quota.
Automation work is quoted per project — we do not publish a rate, because the price is driven by how many processes are in scope, how many platforms and internal systems the agents have to reach, and whether you want us on support afterwards. Describe the task and we come back with a range within one business day.
If you are still weighing automation against a subscription, an agency or a hire, we put the four options side by side. Compare custom automation with SaaS, an agency and an in-house hire
Recent work
Each case is a production system shipped for a real seller. Short summaries below — full write-ups linked under each card.
Custom pipeline that predicts inbound timing, reorder windows, and out-of-stock risk across Amazon and other marketplaces — factoring supplier lead times, freight routing, and inventory burn rate.
Request
A short brief is enough. We reply within one business day with a clear yes/no and next steps.