# Redeem coupon Endpoint: POST /api/user/v1/projects/{project_id}/redeem_coupon Version: 2.0 Security: projectUserJwtAuth ## Path parameters: - `project_id` (integer, required) ## Request fields (application/json): - `code` (string) Coupon code Example: "abcde" ## Response 200 fields ## Response 400 fields ## Response 500 fields