{"slug":"saylorinnovations-com-api-gas-history-3a1d54","title":"EVM gas fee history","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/gas/history","category":"other","description":"EVM gas fee history - base fee, priority tip percentiles, trend and congestion for a chain over the last N blocks with the USD cost of a transfer","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":{"blocks":"20","chain":"ethereum"},"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":{"blocks":{"description":"optional 2-100 recent blocks, default 20","type":"string"},"chain":{"description":"ethereum, base, arbitrum, optimism, polygon, bsc, avalanche or linea","type":"string"}},"required":["chain"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"avg_block_utilization_pct":{"description":"Avg block utilization, as a percentage","type":["number","null"]},"base_fee_gwei":{"description":"Base fee per gas in gwei","type":"object"},"base_fee_trend_pct":{"description":"Base fee trend, as a percentage","type":["number","null"]},"blocks_sampled":{"description":"Blocks sampled","type":["number","null"]},"chain":{"description":"Blockchain the data is for","type":"string"},"checked_at":{"description":"Time the check was run (UTC)","type":["string","null"]},"congestion":{"type":"string"},"native_transfer_cost":{"description":"Native transfer cost","type":"object"},"next_block_base_fee_gwei":{"description":"Next block base fee, in gwei","type":"number"},"priority_tip_gwei":{"description":"Priority tip, in gwei","type":"object"},"series_base_fee_gwei":{"description":"Series base fee, in gwei","items":{"type":"number"},"type":"array"},"trend":{"description":"Direction of recent change","type":"string"}},"required":["chain","base_fee_gwei"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"EVM gas fee history - base fee, priority tip percentiles, trend and congestion for a chain over the last N blocks with the USD cost of a transfer","last_updated":"2026-10-16T19:48:52.335Z","schemes":["exact"]}