---
title: "Change Subscription Interval"
method: POST
path: "/api/subscription/change-interval"
---

# Change Subscription Interval

`POST /api/subscription/change-interval`

## Request

- Base URL: `https://api.openpaper.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.openpaper.ai/api/subscription/change-interval`
- Auth: API key in header `Authorization`

Schedule a billing interval change at the end of the current billing period
using Stripe Subscription Schedules. No immediate charge or proration.

## Query parameters

- `new_interval` 'month' | 'year', required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/openpaper/apis/open-paper.md) - [All operations](https://skmtc.dev/openpaper/apis/open-paper/llms.txt) - [OpenAPI document](https://skmtc.dev/openpaper/apis/open-paper/revisions/c2ad03216101?raw)