> ## Documentation Index
> Fetch the complete documentation index at: https://developer.fabric.inc/llms.txt
> Use this file to discover all available pages before exploring further.

# Using Developer Portal

[The developer portal](https://developer.fabric.inc/) provides API definitions that include working code examples and the ability to make authenticated API requests directly within the documentation. This section provides step-by-step instructions on how to make API calls from the developer portal.

#### Prerequisites

* Install the [Postman](https://www.postman.com/downloads/) client.
* Generate the access token by following the instructions in the [Getting Started with fabric APIs](/v3/getting-started/api-guides/getting-started-with-fabric-apis) section.
* Get the `x-fabric-tenant-id` by following the instructions in the [Getting the Account ID](/v3/platform/settings/account-details/getting-the-account-id) section.

### Procedure

1. Go to the [fabric Developer Portal](https://developer.fabric.inc/).
2. To try an API endpoint, go to the corresponding page.\
   For example, to add an attribute go to the [Create Attribute](/v3/api-reference/product-catalog/attributes/create-attribute) page. You can click the **Examples** menu in the request field to view request examples with data.
3. To run the API request, do the following:
   * In the **Bearer** field in the right pane, enter the access token.
   * In the **BODY PARAMS** section, enter the required setting for each parameter.
   * In the **Headers** section, enter the required setting for each parameter.
   * In the right pane, click **Try it**.

The response is displayed in JSON format. You can also click the Examples menu in the right pane to see different response examples.

### Related Resources

* [Getting Started with fabric APIs](/v3/getting-started/api-guides/getting-started-with-fabric-apis)
* [API Authentication](/v3/getting-started/api-guides/api-authentication)
* [Glossary](/v3/getting-started/copilot/glossary)
* [Getting System App Credentials](/v3/platform/settings/api-apps/getting-system-app-credentials)
* [fabric support](https://support.fabric.inc/hc/en-us/requests/new)
* [License](https://fabric.inc/api-license)
* [Demo Request](https://fabric.inc/demo-request)