{"sample":true,"free":true,"note":"Static example of the paid response shape (not live data). Drop sample=1 and pay via x402 for live data. Failed calls (4xx/5xx) are never charged.","path":"/crypto/base-gas","price_usdc":"0.001000","pay_url":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/base-gas?gas_limit=21000","input_schema":{"type":"object","properties":{"gas_limit":{"type":"integer","minimum":21000,"maximum":30000000,"description":"Gas units to price (default 21000)","examples":[21000,150000]}},"additionalProperties":false},"example":{"updated_at":"2026-10-29T13:30:00Z","chain":"base","base_fee_gwei":0.005,"congestion":0.42,"recommended_tier":"standard","tiers":{"slow":{"max_priority_fee_gwei":0.001,"max_fee_gwei":0.006,"est_cost_usd":0.0005},"standard":{"max_priority_fee_gwei":0.001,"max_fee_gwei":0.011,"est_cost_usd":0.0005},"fast":{"max_priority_fee_gwei":0.01,"max_fee_gwei":0.025,"est_cost_usd":0.0007}},"tx_fields":{"type":"0x2","maxFeePerGas":"0xa7d8c0","maxPriorityFeePerGas":"0xf4240","gas":"0x5208"},"chain_id":8453,"block":37000000,"gas_price_gwei":0.006,"gas_price_wei_hex":"0x5b8d80","max_priority_fee_gwei":0.001,"max_priority_fee_wei_hex":"0xf4240","est_transfer_cost_eth":1.26e-7,"sources":["https://mainnet.base.org"]},"start_here":"https://kr-x402-mvp.kgy5612.workers.dev/crypto/ping"}