I did some reverse engineering of the NSW TrainLink API, so I could find the cheapest day to travel. This repo contains the script I used to do this.
To download dependencies needed for the script:
npm ci
Open fetch.js and set the constants DEP_STATION, ARR_STATION,
START_DATE, END_DATE to your desired values.
To run the script:
node .
I welcome any PRs to make this script more robust/flexible/user-friendly.