Check if affiliate code is free

GET https://api.fuul.xyz/api/v1/affiliates/codes/{code}

Checks if an affiliate code is free to use (does not exist).

This endpoint only checks if the code exists in the database. It does not consider usage limits (max_uses).

Returns free: true if the code does not exist (can be used). Returns free: false if the code exists (cannot be used).

For checking availability considering usage limits, use /v1/affiliates/codes/{code}/availability.