APIs are the primary way to connect your Nordcraft application to external data sources. They enable communication between your frontend application and backend services, allowing you to fetch, send and manipulate data.

Add a new API

To create a new API connection in Nordcraft:

1. 1

   Select the component or page where you want to add the API
2. 2

   With no element selected, go to the APIs section of the data panel and click the + button
3. 3

   You will see the Add new API panel with several options:
   (A) Enter a URL directly to create a custom API
   (B) Choose from connected services to access predefined endpoints (see Services)
   (C) Select from available templates to quickly set up common APIs
   (D) Choose a Demo API

For beginners, the Demo APIs provide an excellent starting point to understand how APIs work in Nordcraft.

Configure API requests

After creating an API, you will see the configuration panel with several important sections:

1. 1

   Method: Select the appropriate HTTP method (GET, POST, PUT, DELETE, etc.)
2. 2

   Name: Give your API a descriptive name for easy reference
3. 3

   Configuration tabs:
   • Inputs: Default values used when fetching that can be overwritten when called from workflows
   • URL: Configure the base URL and path
   • Parameters: Configure query parameters
   • Headers: Set request headers for authentication, content type, etc.
   • Body: Define the request body for methods that support it (this tab is only visible for supported methods)
   • Events: Define workflows for On success, On error and On message events
   • Advanced: Access additional configuration options
4. 4

   Response section: View the latest response from the server
5. 5

   Auto fetch toggle: Control when the API automatically retrieves data

Configure the endpoint URL to specify where your request should be sent.

Configure a request URL

The URL and Parameters tabs allow you to construct the complete request URL by configuring:

1. 1

   Base URL: The domain and protocol (e.g. https://api.example.com)
2. 2

   Path: The specific endpoint path (e.g. /users/profile)
3. 3

   Query parameters (in Parameters tab): Key-value pairs that appear after ? in the URL. They refine the response without changing the endpoint path. Parameters with null values are skipped.

Headers provide additional information about the request that guide how the server processes the call.

Set a request header

To add a header:

1. 1

   In the Headers tab, click the + button
2. 2

   Select or enter the header name:
   • Content-Type: Format of the request body (e.g. application/json)
   • Accept: Expected format of the response (e.g. application/json)
   • Authorization: Authentication credentials (e.g. Bearer {{ cookies.access_token }})
   • Cache-Control: Caching directives (e.g. no-cache)
   • X-Api-Key: API key for authentication
   • Accept-Language: Preferred language for response
   • Type in any value and confirm with Enter for other headers
3. 3

   Provide a static value or click fx for dynamic values

Define the data to send in the request body when the method supports it, such as POST, PUT or PATCH.

Set a request body

To configure the body:

1. 1

   Ensure your method supports a request body
2. 2

   Navigate to the Body tab
3. 3

   Use the formula editor to define the data structure

The auto fetch feature automatically triggers API requests based on certain conditions:

• When enabled, the API will fetch data when the component or page loads
• The API will automatically refetch when any formula values used in the request change
• This behavior can be controlled with a formula to create conditional fetching logic

Auto fetch is especially useful for GET requests where you want to display data immediately and keep it updated when related parameters change. Additionally, it enables server-side rendering (SSR) if configured in the Advanced tab.

Test an API request

You can test your API directly in the editor:

1. 1

   For APIs with Auto fetch disabled, click the Play button to manually trigger the request
2. 2

   View the response in the Response section at the bottom of the panel
3. 3

   Check the status code, headers and body to ensure the API is working as expected
4. 4

   Check the returned data to ensure the API provides the correct information

The response section will display the data returned from the API, including properly formatted JSON if that is the response format.

After setting up your API, you will want to:

• Call the API in response to user actions
• Access the API data in your components
• Configure authentication for secure data access
• Explore advanced features for specialized requirements