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x402node Gas Fee Forecast
x402
x402node Gas Fee Forecast is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-27).
Analyzes short-term base fee trends on Base or Ethereum to advise whether to send a transaction now or wait for lower fees
Price / call$0.004
Success—
StatusUnknown
How this service works
Analyze the short-term base fee trend on Base or Ethereum to advise whether to send a transaction now or wait - a cost-optimization signal for agents that LLMs cannot compute from live blocks. gas forecast, gas trend, should i send now, gas timing, base fee trend, optimal gas time Accepts payment on Base or Solana — either network works.
Output
Returns a short-term base fee trend analysis for Base or Ethereum, including whether fees are rising, falling, or stable, and a timing recommendation advising whether to send a transaction now or wait — a live cost-optimization signal derived from recent block data.
Example use cases
Example prompt
“Is now a good time to send my transaction on Base, or should I wait for the base fee to drop? Give me the current gas trend and a timing recommendation.”
Technical details
Endpoint
GEThttps://api.x402node.dev/market/gas-forecast?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to decide the optimal moment to submit a blockchain transaction and wants a pre-computed timing signal based on live base fee trend data — particularly useful since LLMs cannot compute live block-by-block fee trends themselves. Prefer this over raw gas price endpoints when you need actionable advice (send now vs. wait) rather than just a raw gwei number.
Side effects
- Unsupported network specified — only Base and Ethereum mainnet are supported
- RPC or upstream node unavailable — may return 503 if live block data cannot be fetched
- Stale data if block production is delayed
- Payment not processed — 402 response if USDC payment header is missing or insufficient
Input
{
"network": "base",
"timeframe": "short-term"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"note": "Short-term base fee trend from recent blocks. Helps agents time non-urgent transactions to save gas.",
"_hint": "x402 paid endpoints for AI agents — x402node.dev (utilities) · cn402.com (Chinese culture)",
"chain": "base",
"trend": "stable",
"source": "rpc",
"recentBlocks": [
{
"block": 47471391,
"baseFeeGwei": 0.005
},
{
"block": 47471393,
"baseFeeGwei": 0.005
},
{
"block": 47471395,
"baseFeeGwei": 0.005
},
{
"block": 47471397,
"baseFeeGwei": 0.005
},
{
"block": 47471399,
"baseFeeGwei": 0.005
},
{
"block": 47471401,
"baseFeeGwei": 0.005
}
],
"recentAvgGwei": 0.005,
"recommendation": "Gas stable - fine to send now.",
"currentBaseFeeGwei": 0.005
}Tags
x402
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