{"slug":"saylorinnovations-com-api-gas-compare-d440ec","title":"Cheapest chain for a transaction","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/gas/compare","category":"market","description":"Cheapest chain for a transaction - USD cost of a transfer, token transfer, swap or NFT mint across Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche and Linea","price_listed":0.01,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"action":"swap"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET","POST","PUT","PATCH","DELETE","HEAD"],"type":"string"},"queryParams":{"properties":{"action":{"description":"optional transfer, erc20-transfer, nft-transfer, nft-mint, swap, or a gas-unit number; default transfer","type":"string"}},"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"action":{"description":"Action the figures are for","type":"string"},"chains":{"description":"Chains covered","items":{"properties":{"base_fee_gwei":{"description":"Base fee per gas in gwei"},"chain":{"description":"Blockchain the data is for","type":"string"},"cost_native":{"description":"Cost native","type":"number"},"cost_usd":{"description":"Cost, in US dollars","type":"number"},"gas_price_gwei":{"description":"Gas price in gwei","type":"number"},"l1_data_fee_native":{"description":"L1 data fee native"},"native_price_usd":{"description":"Native price, in US dollars"},"native_token":{"description":"Native token","type":"string"},"priority_tip_gwei":{"description":"Priority tip, in gwei"}},"type":"object"},"type":"array"},"chains_checked":{"description":"Chains checked","type":["number","null"]},"chains_responding":{"description":"Chains responding","type":["number","null"]},"cheapest":{"description":"Cheapest option","type":"object"},"cheapest_vs_most_expensive_x":{"description":"Cheapest vs most expensive x","type":["number","null"]},"checked_at":{"description":"Time the check was run (UTC)","type":["string","null"]},"gas_units":{"description":"Gas units","type":"number"},"most_expensive":{"description":"Most expensive","type":"object"},"note":{"description":"Caveat or context for reading the result","type":["string","null"]}},"required":["action","chains"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Cheapest chain for a transaction - USD cost of a transfer, token transfer, swap or NFT mint across Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche and Linea","last_updated":"2026-10-16T19:44:52.404Z","schemes":["exact"]}