{"slug":"base-gas-x402-production-up-railway-app-gas-80b81e","title":"Live Base mainnet gas","host":"base-gas-x402-production.up.railway.app","method":"GET","resource":"https://base-gas-x402-production.up.railway.app/gas","category":"other","description":"Live Base mainnet gas: EIP-1559 base fee, low/medium/high priority tiers in gwei, and a transaction cost estimate for any gas limit.","price_listed":0.005,"price_asked":0.005,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":1470,"reported_calls_30d":698,"reported_payers_30d":10,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"gasLimit":21000},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"gasLimit":{"default":21000,"description":"Gas units to price the cost estimate against. Defaults to 21000 (a plain ETH transfer). Use ~65000 for an ERC-20 transfer, ~85000 for an NFT mint, ~180000 for a Uniswap swap, or ~1500000 for a contract deploy.","maximum":30000000,"minimum":21000,"type":"integer"}},"required":[],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.005,"price_match":true,"latency_ms":1470,"error":null}],"description_full":"Live Base mainnet gas: EIP-1559 base fee, low/medium/high priority tiers in gwei, and a transaction cost estimate for any gas limit.","last_updated":"2026-09-24T17:00:01.841Z","schemes":["exact"]}