---
title: "Change Plan"
method: POST
path: "/billing/change-plan"
---

# Change Plan

`POST /billing/change-plan`

## Request

- Base URL: `https://api.specproof.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.specproof.ai/billing/change-plan`
- Auth: none declared

## Headers

- `X-Org-Id` string, nullable
- `authorization` string

## Request body

- ChangePlanRequest
  - `new_plan` string, required

## Response `200`

Successful Response

- ChangePlanResponse
  - `success` boolean, required
  - `previous_plan` string, nullable
  - `new_plan` string, nullable
  - `prorated_amount` integer, nullable
  - `effective_date` string, nullable
  - `message` string, nullable

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/specproof/apis/specproof-portal-api.md) · [All operations](https://skmtc.dev/specproof/apis/specproof-portal-api/llms.txt) · [OpenAPI document](https://skmtc.dev/specproof/apis/specproof-portal-api/revisions/228b03caa929?raw)