{"info":{"title":"Up","version":"1.0.0"},"openapi":"3.1.0","paths":{"/gas":{"get":{"responses":{"200":{"description":"Successful response"},"402":{"description":"Payment Required"}},"x-payment-info":{"offers":[{"amount":"5000","currency":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","description":"Up: Gas","intent":"charge","method":"evm","recipient":"0x0D083590c048A243e24a75E3a7C968145DE25B44"}]},"summary":"Live Base mainnet gas: EIP-1559 base fee, low/medium/high priority tiers in gwei, and a transaction cost estimate for any gas limit."}},"/gas/cheapest-window":{"get":{"responses":{"200":{"description":"Successful response"},"402":{"description":"Payment Required"}},"x-payment-info":{"offers":[{"amount":"20000","currency":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","description":"Up: Gas Cheapest Window","intent":"charge","method":"evm","recipient":"0x0D083590c048A243e24a75E3a7C968145DE25B44"}]},"summary":"Cheapest hours of day to transact on Base, from collected gas history: hourly averages in UTC ranked cheapest first, plus the savings percent."}},"/gas/compare":{"get":{"responses":{"200":{"description":"Successful response"},"402":{"description":"Payment Required"}},"x-payment-info":{"offers":[{"amount":"10000","currency":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","description":"Up: Gas Compare","intent":"charge","method":"evm","recipient":"0x0D083590c048A243e24a75E3a7C968145DE25B44"}]},"summary":"Live gas cost comparison across Base, OP Mainnet, Arbitrum One, and Ethereum in one call, ranked cheapest first."}}},"x-service-info":{"description":"Up is an x402-native service at https://base-gas-x402-production.up.railway.app, indexed from the x402 Bazaar (Coinbase's public discovery directory). It charges callers itself in USDC on Base and is paid directly at its own wallet; Monex Protocol passes your request and payment headers through untouched. 3 endpoints listed."}}