---
title: "Create add-ons"
method: POST
path: "/add-ons"
tags: ["Add-Ons"]
---

# Create add-ons

`POST /add-ons`

Create one or more add-ons to link to payment plans and subscriptions.

## Headers

- `api-token` string, required

## Request body

- AddOnCreationReq
  - `addOns` BaseAddOnCreate[]
    - `name` string, required — The new add-on name. All add-ons must have a name between 3 and 256 characters in length.
    - `amount` number, float, required — The amount charged to subscriptions which apply this add-on. This amount is charged for each copy of the add-on applied. For example an add-on with a quantity of three will charge this amount three times for the given subscription recurring billing.
    - `frequency` 'one_time' | 'recurring', required
    - `isQuantityEditable` 'false' | 'true', required

## Response `201`

Successful add-on creation. The response body contains the data representation of all newly created  add-ons.

- AddOnCollectionRes
  - `data` BaseAddOn[]
    - `id` integer
    - `dateCreated` string, date-time
    - `dateUpdated` string, date-time
    - `name` string
    - `description` string
    - `amount` number, float
    - `frequency` string
    - `isQuantityEditable` string

## Other responses

- `400` — You are initiating a request with invalid parameter and/or body values.
- `401` — You are not authorized to access this resource. Please ensure that you are authenticated, and that you are using the `api-token` header
- `403` — You do not have permission to access this resource. Please ensure you are both authenticated and that you have the required roles/permissions active.
- `500` — Helcim internal server error encountered.

---

[API](https://skmtc.net/helcim/apis/the-helcim-api.md) · [All operations](https://skmtc.net/helcim/apis/the-helcim-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/helcim/the-helcim-api/versions/345052ca6578/schema)