---
title: "Cancel Subscription"
method: POST
path: "/api/v1/payments/cancel-subscription"
tags: ["payments"]
---

# Cancel Subscription

`POST /api/v1/payments/cancel-subscription`

## Request

- Base URL: `https://api.slidemaster.tw` (the document declares no server; this is the origin it was published from)
- URL: `https://api.slidemaster.tw/api/v1/payments/cancel-subscription`
- Auth: none declared

取消訂閱：自動判斷 Oen 或 ECPay，呼叫對應金流 API 終止訂閱，再更新 Firestore。
判斷規則：有 oen_subscription_id → Oen；否則 → ECPay legacy。

## Headers

- `Authorization` string, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/slidemaster/apis/slidemaster-ai-api.md) · [All operations](https://skmtc.dev/slidemaster/apis/slidemaster-ai-api/llms.txt) · [OpenAPI document](https://skmtc.dev/slidemaster/apis/slidemaster-ai-api/revisions/a964c005977e?raw)