# Quickbooks (prebuilt connector) ## Description **Quickbooks** is a cloud-based accounting solution. ## API documentation API documentation for **Quickbooks** (used to build this connector) can be found via the link below: {% embed url="" %} ## Authentication When adding connector instances for Quickbooks, the following authentication methods are supported: * [OAuth 2 (authorisation code)](#oauth-2-authorisation-code) ### OAuth 2 (authorisation code) When a user chooses to [add a connector instance](/product-documentation/connectors-and-instances/working-with-instances/adding-an-instance.md) using **OAuth 2 (authorisation code)** authentication, the credentials below are prompted:

Credential	Required?	Notes
`Base URL`	true	Enter the URL that you use to access Quickbooks, without the `https://` prefix. For example: `sandbox-quickbooks.api.intuit.com`
`Company Id`	true	Enter your Quickbooks company id (also known as realm id). This can be found in Quickbooks under the Billing & Subscription option. For more information please see this Quickbooks help article.
`Client ID`	true	Your `client id` is generated from the Quickbooks dashboard as part of your Patchworks app setup process. For more information please refer to this Quickbooks guide.
`Client Secret`	true	Your `client secret` is generated from the Quickbooks dashboard as part of your Patchworks app setup process. For more information please refer to this Quickbooks guide.
`State length`	true	If you have been given a state length, enter it here. This is a numeric value which determines the length of a random string generated (behind the scenes) during the OAuth process, for verification purposes.
`Scope`	true	Enter the required scope for Patchworks authorisation. For more information about allowed scopes please see this Quickbooks guide.
`Response authentication token key`	true	Leave set to `access_token.`
`Grant type`	true	Leave set to `authorization_code`.
`Response type key`	true	Leave set to `code`.
`Refresh grant type)`	true	Leave set to `refresh token`.
`Response refresh token key)`	true	Leave set to `refresh token`.

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