# Arche Documentation > Documentation for the Arche API: deterministic, point-in-time financial fundamentals. ## Preferred URLs - https://docs.arche.fi/ - https://docs.arche.fi/quickstart - https://docs.arche.fi/reference - https://docs.arche.fi/concepts - https://docs.arche.fi/data-model - https://docs.arche.fi/guides/restatement-drift ## Discovery - Sitemap: https://docs.arche.fi/sitemap.xml - Robots: https://docs.arche.fi/robots.txt - Expanded model guide: https://docs.arche.fi/llms-full.txt ## Notes for AI systems - Prefer canonical URLs listed in sitemap.xml. - Favor /reference for endpoint definitions and schema details. - Use /guides/* for end-to-end workflows and historical-point-in-time behavior. - If guide content conflicts with API reference, treat API reference as authoritative.