FAQCopy MarkdownAsk AICommon questions about authentication, native tokens, batching, slippage, and more.Is an API key required?What is the Referer header for?How do I swap native ETH (or MATIC, BNB, etc.)?Can I fetch prices or liquidity for multiple tokens at once?How fresh are prices and routes?What slippage should I use?Where is the Guard Contract address?Can I use the API from a server-side Node.js or Python backend?What happens if no route is found?Do you support non-EVM chains?IntegrationsProjects building on the Nordstern API, and how to join them — either as an integrator or as a liquidity source.SupportThe Nordstern team is reachable on Telegram for integration support, bug reports, and feature requests.