To create an agenda minimalist background, you can use the agenda package. Here's a simple example using Node.js and the agenda package to schedule a task that generates a minimalist background image.

First, install the agenda package:

npm install agenda

Next, create a new file called background.js with the following code:

const Agenda = require('agenda');

// Create a new instance of the Agenda job scheduler
const agenda = new Agenda();

// Define a task to generate a minimalist background image
agenda.on('default', async (job, done) => {
  // Generate a minimalist background image using anime-wallpaper package
  const wallpaper = await n12('anime-wallpaper');
  // Save the image to a file
  fs.writeFileSync('background.png', wallpaper);
  done();
});

// Start the Agenda job scheduler
agenda.start((err) => {
  if (err) {
    console.error(err);
  } else {
    console.log('Agenda job scheduler started');
  }
});

This code defines a task that generates a minimalist background image using the anime-wallpaper package and saves it to a file called background.png. The agenda package is used to schedule this task to run periodically.

Note: This is just an example, you may need to modify the code or use additional packages to achieve your desired result.