Every ecommerce brand hits the same wall eventually: your dashboard tool looks great, until someone on the data team needs to join ad spend with warehouse inventory numbers, or finance wants Amazon P&L data sitting next to Stripe payouts in the same warehouse table. That's the moment ecommerce analytics with API access stops being a nice-to-have and starts being the only real option. This guide covers what Trivas exposes through its API, how auth and rate limits work, and where to actually start.