---
title: "Start paying for a plan"
description: "Create a Stripe Checkout address for an organisation with no paid subscription, where a person enters a card and the plan applies after completion; nothing is charged until then."
canonical: "https://grid82.com/docs/builder-api/billing/checkout"
updated: "2026-11-13"
---

# Start paying for a plan

`POST https://studio.grid82.app/v1/organizations/{organizationId}/billing/checkout`

Create a Stripe Checkout address for an organisation with no paid subscription, where a person enters a card and the plan applies after completion; nothing is charged until then.

Admins only. For organisations already paying, use billing.change instead. Returns 501 while billing is not connected.

Requires the `account:write` scope. Operation `billing.checkout`. MCP tool `billing_checkout`. CLI: `grid82 billing checkout` (`npx grid82`).

## Path parameters

| Name             | Type   | Required | Description |
| ---------------- | ------ | -------- | ----------- |
| `organizationId` | string | yes      |             |

## Headers

| Name              | Type   | Required | Description                                                                                                                                                                                                                                                        |
| ----------------- | ------ | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `Idempotency-Key` | string | no       | Any unique string. Sending the same key with the same request again returns the first response (marked `Idempotency-Replayed: true`) instead of running it twice. Reusing it for a different request is refused with 409. Kept for 24 hours. Up to 255 characters. |

## Request body

| Field      | Type                                     | Required | Description          |
| ---------- | ---------------------------------------- | -------- | -------------------- |
| `plan`     | "free" or "starter" or "pro" or "custom" | yes      |                      |
| `interval` | "monthly" or "yearly"                    | no       | Default `"monthly"`. |

**Authorizations**

- `Authorization` (bearer, in header, required)

## Response

**200**: Success

- `data` (`object`, required)
- `data.url` (`string`, required)

```json
{
  "data": {
    "url": "<string>"
  }
}
```

**4XX**: Refused

- `error` (`object`, required)
- `error.code` (`enum<string>`, required, one of: `not_found, forbidden, unauthenticated, validation_failed, conflict, rate_limited, payment_required, not_implemented, internal`)
- `error.message` (`string`, required)
- `error.details` (`Record<string, unknown>`)

```json
{
  "error": {
    "code": "not_found",
    "message": "<string>",
    "details": {}
  }
}
```

**Example request**

```bash
curl --request POST \
  --url 'https://studio.grid82.app/v1/organizations/<organizationId>/billing/checkout' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "plan": "free"
}'
```