Build on Optimlister

You own the frontend completely - every page, every pixel, every price. Your customers pay you through your own billing, and we never see them, their cards or their refunds. You pay one subscription: the Agency tiers are the wholesale tiers, and whether you spend that capacity in our dashboard or through the API is up to you. There is nothing to apply for and nobody to talk to first.

The wholesale tiers top out at 2,520 listings a month. The agencies that pass that do not get pushed onto a bigger flat plan - they move to Agency Partner and keep growing on a metered rate that falls as they scale. You keep the $399 base and its 2,520 listings, and everything above is billed monthly against real usage, at a per-listing rate that drops in bands as your volume grows - so the bigger you get, the less each listing costs. We set the numbers with you by hand.

1. Sign up free. Email in, click the link we send, your account exists. No card.
2. Copy your key from your account page. One string - it is how our engine knows a call is yours.
3. Keep the key on your server. Never paste it into your web page - page code is public, and anyone who reads it could spend your listings. Your pages talk to your server; your server talks to us.
4. Make one call. Copy the example below, swap in your key, run it. Then swap the tool name for any of the 71 in the docs.
5. Build your product around it. Your pages, your brand, your prices, your checkout. Your customers pay you and never see us.
6. Upgrade when real volume arrives. Free is for building and demoing; the wholesale tiers are for operating. The gate tells you the moment you need one.

curl -X POST https://optimlister.ai/api/v1/tools/roast_listing \
    -H "Authorization: Bearer YOUR_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{"listing_text": "Bamboo cutting board set of 3..."}'

Capacity is metered by tier: your monthly listings are the business limit, daily caps keep single tools honest, and hard spend ceilings - scaled to each tier - make a runaway loop our problem, not your invoice. Outgrow a ceiling and a reply to any Optimlister email raises it; on a paid plan the answer is almost always yes. Bulk runs and catalog import open at Studio and above. Publishing runs through exports and the publish tools today; a Chrome extension that fills marketplace forms in the seller's own browser session is in review. Optimlister writes and checks listings; it does not sync stock or orders between marketplaces, and it will not pretend to.