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ChainRay Gas Fee Predictor
x402
ChainRay Gas Fee Predictor is a paid API for AI agents from chainray.online, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Predicts near-term gas fees for a specified blockchain network to help set optimal transaction gas prices.
Price / call$0.005
Success—
StatusUnknown
How this service works
The most complete blockchain data and intelligence service for AI agents. 93 endpoints across 46 chains, from gas fees to DeFi analytics, with real-time streams, intent routing, and verifiable proofs. Pay-per-request via x402.
Output
Returns a predicted near-term gas fee estimate for the specified blockchain network, helping callers set an optimal gas price before submitting a transaction.
Example use cases
Optimize DeFi swap execution timing
“I'm about to swap tokens on Ethereum but want to catch a low gas window — what do you predict gas fees will look like over the next 15 minutes?”
Batch transactions across multiple chains
“Help me figure out which chain to use for my transaction next — can you predict gas costs on both Polygon and Arbitrum so I pick the cheapest option?”
Smart contract deployment cost planning
“I'm deploying a contract on Ethereum tomorrow during morning hours — what should I expect gas fees to be, and what price would you recommend I set?”
Technical details
Endpoint
GEThttps://chainray.online/gas-predictWhen to prefer
Use this endpoint when you need a forward-looking gas fee prediction (not just current gas) for a specific chain like Base, Ethereum, or Polygon, especially before submitting time-sensitive blockchain transactions where overpaying or underpaying gas is costly.
Side effects
- Unsupported chain name returns an error or empty result
- Missing required chain parameter may return a default or error
- Network connectivity issues to ChainRay API return HTTP errors
- Payment failure via x402 protocol returns 402 Payment Required
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"chain": "ethereum",
"stats": {
"max": 0.155,
"min": 0.108,
"avg5Block": 0.143,
"avg20Block": 0.127,
"volatility": "10.643%",
"sampledBlocks": 20
},
"trend": {
"direction": "RISING",
"changePercent": 11.906
},
"_proof": {
"chain": "ethereum",
"dataHash": "4cef21a0ebb9e220d4805d6b4d451a03c333e48cdad496acf0daebca3f3e5e17",
"blockHash": "0xb973663ffddb2effc04c657cf6066df1f81547a6fbe8a9055eeb5409b5a90825",
"chainName": "Ethereum",
"blockNumber": 25306097,
"analysisHash": "930b6182d8015e853b0f81c4df5a6d0f0539ce884df907f9ea84c1f070971e49",
"proofVersion": "3.0",
"blockTimestamp": 1781324075,
"proofTimestamp": 1781324085588
},
"current": {
"unit": "Gwei",
"baseFee": 0.139
},
"forecast": {
"low": 0.108,
"mid": 0.138,
"high": 0.185,
"note": "Based on statistical trend of last 20 real blocks, not speculative",
"unit": "Gwei",
"horizon": "5-20 blocks (~60-240s)"
},
"timestamp": 1781324085546,
"dataSource": "on-chain",
"methodology": "Gas Trend v1.0 — reads actual baseFee from last 20 blocks. Moving average + coefficient of variation. Zero external APIs.",
"recommendation": "Send now — gas prices rising"
}Tags
x402
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