Guides

Cross-cutting concepts that apply to every StarPlan endpoint

These guides cover the rules that apply across the whole StarPlan API — when authentication is required, how requests are throttled, and what error responses look like.

Authentication

X-API-Key header, key format, anonymous vs authenticated routes

Rate limits

Per-IP throttle windows and what happens when you exceed them

Errors

Wire format and conventional status codes

Change endpoints

Read the StarPlan change log

Authentication

When the StarPlan API needs an API key — and when it doesn't