To use Lucidchart integration in n8n, start by adding the HTTP Request node to your workflow canvas and authenticate it using a generic authentication method. Once connected, you can make custom API calls to Lucidchart to query the data you need using the URLs you provide, for example: for example, you can create a new document in Lucidchart by making a POST request to the appropriate Lucidchart API endpoint with the necessary JSON body parameters, including the document title and user ID. To update an existing diagram, send a PATCH request to the diagram’s URL, including the updated data in the body. Additionally, you can retrieve a list of your diagrams by making a GET request to the relevant endpoint to fetch your documents for further processing in your workflow.