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BaseBuilder DeFi Gas Price Predictor
x402
BaseBuilder DeFi Gas Price Predictor is a paid API for AI agents from bbx-defi.vercel.app, paid per call via x402, $0.10757/call, status unknown (last checked 2026-10-12).
Predicts gas prices for Ethereum/EVM transactions using machine learning or heuristic models
Price / call$0.10757
Success—
StatusUnknown
How this service works
BaseBuilder Defi API hub - 22 paid endpoints
Output
Returns a predicted gas price (likely in gwei) for EVM transactions, potentially including fast/standard/slow tier estimates, a confidence score, and a recommendation on whether current gas conditions are favorable for submitting a transaction.
Example use cases
Timing a DeFi swap optimally
“I want to do a token swap on Ethereum but only if gas is under 30 gwei — can you predict the gas price right now and tell me whether it's a good time to execute?”
Pre-flight check for NFT mint
“I'm about to mint an NFT on Ethereum mainnet — can you predict what gas fees will look like so I can decide whether to proceed now or wait?”
Arbitrage bot gas budgeting
“My arbitrage bot needs a gas price forecast for Ethereum before deciding whether a trade is profitable — can you get the current predicted gas cost in gwei?”
Technical details
Endpoint
POSThttps://bbx-defi.vercel.app/api/gas/predict?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a forward-looking gas price prediction (not just the current mempool snapshot) before submitting a DeFi transaction on an EVM chain, especially when cost optimization or transaction timing matters. Prefer this over raw RPC eth_gasPrice calls when you want ML-assisted forecasting rather than an instantaneous reading.
Side effects
- Network or RPC unavailability causing stale or missing gas data
- Invalid or unsupported network identifier returns 400 error
- Payment not included or insufficient USDC causes 402 payment required
- Model prediction timeout on high-load periods returning 503
- Malformed request body returns 422 validation error
Tags
x402
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