Gumroad License Keys

https://api.gumroad.com/v2/licenses/verify

When a customer receives a refund, Gumroad automatically invalidates their license key. Ensure your software checks the key status periodically (e.g., once a week or upon every launch) to catch revoked access. Handling Lost Keys gumroad license keys

Gumroad’s verify endpoint returns valid: false after a refund or chargeback. Your app should deactivate the key accordingly. https://api

To verify a key, you typically send a POST request with the following: The unique identifier for your product. license_key: The string provided by the customer. gumroad license keys