MCPs › Dev tools › Seller Fees Calculator
Gumroad, Stripe, PayPal and Etsy seller fees, payouts and break-even prices. Local, no API key.
Computed from public signals only — stars, package downloads and how many registries list it. It measures how established a project is, not whether it is safe or right for you.
Not monetized yet
Turn Seller Fees Calculator’s tool calls into revenue: one disclosed sponsored slot, 70% revenue share, fail-open by design.
Want top placement in Lulu’s Choice? Get in touch.
Install Seller Fees Calculator
For anyone using Seller Fees Calculator — no Lulu account needed# stdio server — install per the repository README: https://github.com/narwhalthepong/seller-fees-mcp
Real-time weather for any city, built on the lulu-ads widget gallery. First-party, free forever.
View server →FAQ
Seller Fees Calculator installs from source — follow the repository README.
21 out of 100, computed from cross-registry traction signals (installs, stars, registry presence) — never influenced by sponsorship.
Works well together
Your server?
This is for the person who owns Seller Fees Calculator — adds Lulu Ads to your own code. Not the install steps above, those are for your users.
Copies a ready prompt: your coding agent installs the lulu-ads SDK, wires the slot, and applies the widget design guide.
or set up manually at getlulu.dev/publishers
Get verified so you can edit the page. Your badge is already live below — no claim needed for that.
Managed hosting with monetization built in — waitlist.
[](https://getlulu.dev/mcps/seller-fees-calculator)