---
title: "Start Stripe Checkout at the sales-led custom flat monthly price"
method: POST
path: "/companies/{companyId}/checkout/custom-offer-session"
tags: ["Checkout"]
---

# Start Stripe Checkout at the sales-led custom flat monthly price

`POST /companies/{companyId}/checkout/custom-offer-session`

## Request

- Base URL: `https://api.medianfi.com/api/v1`
- URL: `https://api.medianfi.com/api/v1/companies/{companyId}/checkout/custom-offer-session`
- Auth: HTTP bearer

Creates a Stripe Checkout session billing the customer's agreed flat
monthly price (locked indefinitely), looked up by the authenticated
email and never trusted from the client. Adds a 30-day trial when the
offer grants the first month free. The price attaches to the shared
Median catalog product, like the usage-based subscription.

## Response `200`

Stripe Checkout URL

- object
  - `success` true, required
  - `data` object, required
    - `url` string, nullable, required

## Other responses

- `400`: Request failed validation
- `401`: Authentication required
- `403`: Insufficient permissions or not a company member

---

[API](https://skmtc.dev/medianfi/apis/median-api.md) · [All operations](https://skmtc.dev/medianfi/apis/median-api/llms.txt) · [OpenAPI document](https://skmtc.dev/medianfi/apis/median-api/revisions/20090ea32b0d?raw)