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Concepts Overview

This section covers the concepts that come up repeatedly across Core Platform’s guides: how requests are authenticated, and how they’re rate limited. It’s the “attached page” for the Concepts group in the sidebar - clicking the group’s own label lands here, separately from expanding it to reveal Authentication and Rate limits underneath it.

Both of the pages nested under this one assume you’ve already completed the Quickstart and have a working API key.

At a high level, every request to Core Platform passes through the same two checks, in this order:

  1. Authentication - is the X-API-Key header present and valid?
  2. Rate limiting - has this key exceeded its tier’s request budget?

A request that fails either check never reaches application code - it’s rejected at the gateway with a 401 or 429 respectively, and doesn’t count against your usage for the current billing period.