# checkoutAddon

<InternalOnly>
<Note type="warning">
  This intent is only available for projects using the [Payments API](/payments). It is not compatible with projects using the [Billing API](/billing).
</Note>
</InternalOnly>

This will open Connect on the checkout page for an add-on, with the specified add-on for the given subscription already in the cart. The user will still need to manually initiate the payment. Upon successful purchase, if a `callbackUrl` was provided, users will be redirected back to it when clicking the **Continue** button.

![checkoutAddon.jpg](https://i.gigscdn.net/docs/v1/connect-session-checkoutAddon.jpg)

The request expects a `checkoutAddon` object that defines the `subscription` for which to purchase the add-ons as well as an array of `addons` to purchase.

<CodeGroup title="Creating a Connect Session with checkoutAddon intent">

```bash
$ curl --request "POST" \
--url "https://api.gigs.com/projects/${GIGS_PROJECT}/connectSessions" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${GIGS_TOKEN}" \
--data '{
  "callbackUrl": "https://example.com",
  "intent": {
    "type": "checkoutAddon",
    "checkoutAddon": {
      "subscription": "sub_0U32VAxJ0Z7P8Y40mBAnOP9LPhEr",
      "addons": ["add_0U32Zonj0Z7P8Y0kDmHNLzgaevse"]
    }
  },
  "user": "usr_0U2ViuFW0Z7P8Y2S1L76mfADMT6m"
}'
```

</CodeGroup>

## Where to go from here

- Read the [Connect Sessions API Documentation][create-connect-session]
- Reach out to [support@gigs.com](mailto:support@gigs.com) for assistance

[create-connect-session]: /connect/connect-sessions#create-a-connect-session