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Gumroad

Payments Dev Free key (no card)

AuthenticationFree key (no card)
Rate limitGumroad publishes no fixed API quota; avoid polling and use webhooks for sale notifications instead.

Documentation: gumroad.com ยท Checked Sep 13, 2026

About

Gumroad is a platform for selling digital products, and its free API lets developers verify software license keys, fetch product and sale data, and manage resources programmatically. Any free Gumroad account can generate an API token from Settings, Advanced, and there is no monthly cost to use the API. The license verification endpoint is the most popular, letting desktop and web apps check that a customer's key is valid. Gumroad takes a transaction fee on sales, but the API itself is free.

Details

Free to start. You may need a free key, but no credit card.

Auth: Free key (no card)

Rate limit: Gumroad publishes no fixed API quota; avoid polling and use webhooks for sale notifications instead.

Verified: 2026-09-13

Best for: license verification digital sales creator tools

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Setup

  1. Create a free Gumroad account and add a product.
  2. Enable license key generation on the product.
  3. Go to Settings, Advanced to create an API access token.
  4. Store the token securely on your server.
  5. Call the license verification endpoint from your app.
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