---
title: "Apply Promo"
method: POST
path: "/v1/organizations/billing/apply-promo"
tags: ["Organization Billing"]
---

# Apply Promo

`POST /v1/organizations/billing/apply-promo`

## Request

- Base URL: `https://api.mixpeek.com`
- URL: `https://api.mixpeek.com/v1/organizations/billing/apply-promo`
- Auth: HTTP bearer

Apply a promo code to the organization's active subscription.

Every failure carries a reason (invalid / expired / exhausted / product
mismatch / no subscription) — never a silent no-op.

## Request body

- ApplyPromoRequest
  - `code` string, required

## Response `200`

Successful Response

- ApplyPromoResponse
  - `applied` boolean, required
  - `code` string, required
  - `percent_off` number, nullable
  - `amount_off_cents` integer, nullable
  - `duration` string, nullable
  - `duration_in_months` integer, nullable
  - `expires_at` integer, nullable

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `422`: Unprocessable Entity
- `429`: Too Many Requests
- `500`: Internal Server Error
- `503`: Service Unavailable

## Changes

- **2026-10-09** `61a175e8eb9a`: 1 warning, 5 info
  - removed the optional property `detail` from the response with the `422` status
  - added the non-success response with the status `429`
  - added the non-success response with the status `503`
  - added the optional property `success` to the response with the `422` status
  - …2 more
- **2026-08-09** `5d4c905106b4`: 1 info
  - the endpoint scheme security `BearerAuth` was added to the API

[Operation history](https://skmtc.dev/mixpeek/apis/mixpeek-api/changes/v1/organizations/billing/apply-promo/post.md)

---

[API](https://skmtc.dev/mixpeek/apis/mixpeek-api.md) - [All operations](https://skmtc.dev/mixpeek/apis/mixpeek-api/llms.txt) - [OpenAPI document](https://skmtc.dev/mixpeek/apis/mixpeek-api/revisions/790bc16455f6?raw)