Neat! I used this API to live-code a mini-portfolio-manager SaaS a couple of months ago: https://anvil.works/blog/live-coding-stock-portfolio https://anvil.work

Neat! I used this API to live-code a mini-portfolio-manager SaaS a couple of months ago: https://anvil.works/blog/live-coding-stock-portfolio https://anvil.works/blog/live-coding-stock-portfolio It let you pick the stocks yourself, and showed you historical graphs too. It was a bit more complex than this, but still only took an hour.