Make.com is a platform that makes it easy to connect to various services and APIs on the internet.
With Retool.com you can with ease, and no coding, create web and mobile apps to power your trading platform. With TAAPI.IO + Retool, you have some powerful tools at your disposal.
With Polygon.io you will have all the powers of TAAPI.IO, but using Polygons price action data (candles). Stocks, Forex, Options available here.