This will parse through the posts in a Total CMS blog and randomly return one. This was made to help with automations in Zapier.

total-cms-get-random-post.js

const url = 'https://sandbox.joeworkman.net/cms-data/blog/store/_blog.json';
const res = await fetch(url);
const json = await res.text();
const posts = Object.values(JSON.parse(json).post).filter(post => !post.draft);
const winner = posts[Math.floor(Math.random()*posts.length)];
return winner;