See how to manually trade stocks using Postman and the Alpaca API by visiting this thread at the Alpaca forum.

Manually Trading Stocks Using Postman and the Alpaca API
How to get started and test the Alpaca trading API Want to trade with Alpaca, but you aren’t fully sure how the Alpaca API works yet? Here’s a step by step tutorial on testing the Alpaca API by trading manually using the Postman interface. Before You Begin… Retrieve your Alpaca Keys If you do…