---
title: "Extend a reserved rental"
method: POST
path: "/v2/on-demand/extend-reserved"
tags: ["rentals"]
---

# Extend a reserved rental

`POST /v2/on-demand/extend-reserved`

Extend a reserved rental

## Request body

- object
  - `rentalId` number, required
  - `termPeriodDays` integer, required
  - `expectedTotalPriceCents` integer, required
  - `expectedReservedUntil` string, date-time, required

## Response `200`

Successful response

- object
  - `rentalId` number, required
  - `reservedUntil` string, required
  - `amountChargedCents` number, required

## Other responses

- `400` — Invalid input data
- `401` — Authorization not provided
- `403` — Insufficient access
- `500` — Internal server error

## Changes

- **2026-09-16** `1875a16896e1` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/hyperbolic/apis/castle-api/changes/v2/on-demand/extend-reserved/post.md)

---

[API](https://skmtc.dev/hyperbolic/apis/castle-api.md) · [All operations](https://skmtc.dev/hyperbolic/apis/castle-api/llms.txt) · [OpenAPI document](https://skmtc.dev/hyperbolic/apis/castle-api/revisions/6b22302ea98a?raw)