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EIP-1559 Gas Price Estimator & Pre-Transaction Cost Calculator
x402
EIP-1559 Gas Price Estimator & Pre-Transaction Cost Calculator is a paid API for AI agents from x402-deployer.x402-deployer.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Reads the latest block on Base, Ethereum, Optimism, or Arbitrum to derive base fee, suggest priority fees for safe-low/standard/fast tiers, compute maxFeePerGas, and convert estimated transaction costs to USD.
Price / call$0.02
Success—
StatusUnknown
How this service works
Gas price API / EIP-1559 fee estimator / Base + Ethereum + Optimism + Arbitrum gas tracker / pre-tx cost estimator. Reads the chain's latest block, derives base fee, suggests priority fees for safe-low/standard/fast tiers, computes total maxFeePerGas, and converts cost to USD for common tx types.
Output
Returns base fee from latest block, suggested priority fees (tip) for safe-low, standard, and fast tiers, computed maxFeePerGas for each tier, and estimated USD cost for common transaction types (e.g. ETH transfer, token transfer, contract deployment) on the requested EVM network.
Example use cases
Example prompt
“What are the current EIP-1559 gas fees on Ethereum mainnet right now — give me safe-low, standard, and fast tiers with the estimated USD cost for a standard ETH transfer?”
Technical details
Endpoint
POSThttps://x402-deployer.x402-deployer.workers.dev/gas-priceWhen to prefer
Use this endpoint when you need real-time EIP-1559 gas estimates across Base, Ethereum, Optimism, or Arbitrum, especially when you need USD cost conversion for user-facing displays or pre-flight transaction cost checks. Prefer this over raw RPC calls when you need structured tier breakdowns (safe-low/standard/fast) without writing custom fee logic.
Side effects
- Unsupported network specified — returns 400 with list of supported chains
- RPC node unavailable or rate-limited — returns 502 or timeout
- Latest block not yet available — stale data or retry needed
- Invalid transaction type provided — returns 400 with supported types
- Price feed unavailable — USD conversion may be missing or approximate
Tags
x402
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