---
title: "Billing Start Subscription"
method: POST
path: "/v1/billing/subscriptions/start"
tags: ["billing", "subscriptions"]
---

# Billing Start Subscription

`POST /v1/billing/subscriptions/start`

Assign a subscription to a customer.

Note: Currently, subscriptions can't be upgraded nor downgraded

## Request body

- SubscriptionData
  - `price_id` string, required — The StripeID `price_xxx` that will be added to the subscription
  - `cycle` 'monthly' | 'yearly', required
  - `tier` '_NONE_' | '_TRIAL_' | '_INTERNAL_' | 'STARTUP' | 'GROWTH' | 'SCALE' | 'ENTERPRISE', required

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/pulze/apis/pulze-ai-api.md) · [All operations](https://skmtc.net/pulze/apis/pulze-ai-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/pulze/pulze-ai-api/revisions/a5e0b539abc5/schema)