mongrl is the API under your marketplace: sellers, listings, search, checkout, messaging and payouts, in any currency. You build the storefront. We run everything behind it, and your team runs the marketplace from the console or by asking Claude.
Cards, Klarna and vouchers. Nothing sells twice.
Set your cut. Sellers are paid automatically once the buyer has the listing.
Sign-up, email sign-in links and payout setup in one short form.
Buyers pay in their currency. Sellers get paid in theirs.
Slow listings get cheaper on a schedule you set.
Delivery priced by size and zone, with bookable delivery times.
Buyers and sellers message your team. You answer from the console inbox.
Your own fields and categories, with an approval queue.
+ much more. Search in any language, valuations, sales reports, Slack alerts, an MCP server for AI assistants, showrooms and warehouses…
One basket across sellers. Buyers pay once, and each seller gets their own order and payout.
Headless usually means building your own back office. mongrl comes with one: the console. From day one, your team values and approves listings, ships orders, answers buyers and sellers, and sees what sold.
mongrl is an MCP server. Connect Claude, ChatGPT or Cursor in a minute, and your team reviews listings, chases orders, answers support and reads the numbers in plain words. It works as the person who connected it, within their role, and checks with them before it emails a customer or changes the shop.
Point your coding agent at one spec and it can build the whole shop. Every endpoint is typed and documented, so it codes against real types, not guesses.
// "Add search to the shop, in the buyer's currency" // Your agent, from the spec: import { listListings } from './api/generated' import { mongrl } from './server/mongrl' const { data } = await listListings({ client: mongrl(), query: { q: 'lounge chair', currency: 'EUR', sort: 'newest' }, })
You bring the niche. We run everything under it.
Pick currencies and languages, set your commission, and decide what a listing needs and how it ships.
Your design, your stack, your domain. Your coding agent builds it from our spec, or you do.
Add the first ones yourself, then let sellers sign up and list on their own. You approve what goes live.
Buyers pay, sellers get paid, and your team follows it all in the console, on Slack and from Claude.
We're onboarding a small group of founders before we open up. You get the whole platform, hands-on setup and a direct line to the people building it. We set your price together, based on what you sell and how much.