Sign up at https://www.onegraph.com, create an app, and grab its id.
Open src/config.re and put the appId in there.
npm install
npm start
# in another tab
npm run webpack
# in *another* tab
npx serve
Visit the npx url and it'll show you the related talks to the id set
in index.re
Back in https://www.onegraph.com/dashboard just add
http://localhost:5000 to your app's CORS origins, and you should be
good to go.