{"slug":"keyronne-com-api-chain-gas-8ff593","title":"Current gas price and EIP-1559 fee suggestions (base fee, priority tip, suggeste","host":"keyronne.com","method":"POST","resource":"https://keyronne.com/api/chain-gas","category":"market","description":"Current gas price and EIP-1559 fee suggestions (base fee, priority tip, suggested max fee) on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain, in gwei. Public JSON-RPC, no API keys. POST a JSON body like: {\"chain\":\"ethereum\"}","price_listed":0.003,"price_asked":0.003,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":56,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"chain":"ethereum"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"body":{"properties":{"chain":{"enum":["ethereum","base","arbitrum","optimism","polygon","bsc"],"type":"string"}},"required":["chain"],"type":"object"},"bodyType":{"enum":["json"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"type":"object"},"output":{"properties":{"baseFeeGwei":{"type":"string"},"chain":{"type":"string"},"gasPriceGwei":{"type":"string"},"priorityFeeGwei":{"type":"string"},"suggestedMaxFeeGwei":{"type":"string"}},"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.003,"price_match":true,"latency_ms":56,"error":null}],"description_full":"Current gas price and EIP-1559 fee suggestions (base fee, priority tip, suggested max fee) on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain, in gwei. Public JSON-RPC, no API keys. POST a JSON body like: {\"chain\":\"ethereum\"}","last_updated":"2026-09-08T08:25:07.449Z","schemes":["exact"]}