---
title: "Add Addon"
method: POST
path: "/api/stripe/addons/{kind}"
tags: ["stripe"]
---

# Add Addon

`POST /api/stripe/addons/{kind}`

## Request

- Base URL: `https://api.advisorppc.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.advisorppc.com/api/stripe/addons/{kind}`
- Auth: HTTP bearer

Add extra accounts or seats to the tenant's live subscription.

Confirm-then-charge: the connectors UI has already shown the price from
the priced 409 and the owner clicked. Stripe invoices the proration now;
the webhook makes the quantity durable. The row is updated here too so the
owner's retry succeeds before the webhook lands.

## Path parameters

- `kind` string, required

## Headers

- `X-Tenant-Id` integer, nullable

## Request body

- AddonIn
  - `quantity` integer

## Response `200`

Successful Response

- AddonOut
  - `ok` boolean, required
  - `kind` string, required
  - `extra_accounts` integer, required
  - `extra_seats` integer, required
  - `monthly_usd_each` integer, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/advisorppc/apis/advisorppc-api.md) · [All operations](https://skmtc.dev/advisorppc/apis/advisorppc-api/llms.txt) · [OpenAPI document](https://skmtc.dev/advisorppc/apis/advisorppc-api/revisions/3441bd729e0c?raw)