3Route

Best-priced crypto swaps for agents, traders, and apps. Aggregates DEX liquidity to return competitive quotes and swap transactions ready to sign and execute. Two modes are available: Base supports current-state routing; Pro adds exact-output trades, historical state, and detailed routes. No API key or subscription required. Token discovery is free; quote and swap endpoints require payment via x402 or MPP. See each operation’s metadata for pricing and payment options. For occasional requests, use per-request payments. For frequent requests, such as continuous price monitoring or trading automation, prefer x402 batch settlement or MPP session payments, where supported, to reduce settlement overhead.