---
title: "Redeem Coupon"
method: POST
path: "/api/billing/coupon/redeem"
tags: ["billing", "billing"]
---

# Redeem Coupon

`POST /api/billing/coupon/redeem`

## Request

- Base URL: `https://api.dialogbrain.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.dialogbrain.com/api/billing/coupon/redeem`
- Auth: none declared

Redeem a promotional coupon code to add credits to workspace balance.

Validates:
- Coupon exists and is active
- Not expired
- Workspace hasn't already redeemed
- Global usage limit not exceeded

Rate limited to 10 attempts per workspace per minute.

## Request body

- RedeemCouponRequest
  - `code` string, required

## Response `200`

Successful Response

- RedeemCouponResponse
  - `message` string, required
  - `amount_usd` number, required
  - `new_balance_usd` number, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/dialogbrain/apis/dialogbrain-v2-api-gateway.md) · [All operations](https://skmtc.dev/dialogbrain/apis/dialogbrain-v2-api-gateway/llms.txt) · [OpenAPI document](https://skmtc.dev/dialogbrain/apis/dialogbrain-v2-api-gateway/revisions/77bef09a9209?raw)