Seller Fee API

Marketplace and payment fees for Gumroad, Etsy, Stripe and PayPal with net payout breakdowns.

Seller Fee API is a free Business API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.

Authentication: None required
HTTPS: Yes
CORS: Yes
Category: Business
Uptime (30 days): 100%

Visit documentation ↗seller-fee-api.narwhalapis.workers.dev

Online · 1566 msTested Nov 15, 2026 · checked dailyIs it down? Status & uptime

Key facts

No API key needed
100% uptime (30 days)
Returns JSON at its URL
Callable from the browser (CORS)
HTTPS

Quick start

Seller Fee API returns JSON at seller-fee-api.narwhalapis.workers.dev with no API key. Verified by our health check on Nov 15, 2026.

Bash

curl -s "https://seller-fee-api.narwhalapis.workers.dev"

JavaScript

const res = await fetch("https://seller-fee-api.narwhalapis.workers.dev");
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const data = await res.json();
console.log(data);

Python

import requests

res = requests.get("https://seller-fee-api.narwhalapis.workers.dev", timeout=10)
res.raise_for_status()
data = res.json()
print(data)

Example response

Trimmed from the live response on Nov 15, 2026.

JSON

{
  "name": "Seller Fee API",
  "description": "Fees, net payout and effective rate for Gumroad, Etsy, Stripe and PayPal, plu...",
  "endpoints": [
    "/v1/platforms",
    "/v1/fee",
    "/v1/price"
  ],
  "example": "/v1/compare?amount=20",
  "links": {
    "docs": "https://narwhalthepong.github.io/gumroad-license-check/free-tax-finance-api",
    "rapidapi": "https://rapidapi.com/narwhalapis/api/seller-fee-api-gumroad-etsy-stripe-paypa...",
    "openapi": "/openapi.json",
    "spreadsheet": "https://payhip.com/b/6tHXR"
  },
  "free": "Free to use; please keep request rates reasonable.",
  "version": "1.1.0"
}

Step-by-step guides: Python · JavaScript · Node.js · PHP · Java · Go · Ruby · C#

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Seller Fee API FAQ

Is the Seller Fee API free?

Yes. The Seller Fee API is listed in the Business category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.

Does the Seller Fee API require an API key?

No. The Seller Fee API requires no authentication, so you can start making requests without signing up.

Can I call the Seller Fee API from the browser?

Yes. The Seller Fee API supports CORS, so front-end JavaScript can call it directly.

Does the Seller Fee API support HTTPS?

Yes. The Seller Fee API is served over HTTPS, so it's safe to use in production.

Maintain the Seller Fee API? Add a badge

Show that Seller Fee is listed on Public APIs. The badge displays its developer rating once it has one.

Markdown

[![Seller Fee on Public APIs](https://publicapis.lol/badge/seller-fee.svg)](https://publicapis.lol/apis/seller-fee)

HTML

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