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SYNTHORA Multi-Chain Gas Price Oracle
x402
SYNTHORA Multi-Chain Gas Price Oracle is a paid API for AI agents from owlracle-multichain-gas-oracle.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Returns tiered gas price estimates (base fee, max fee, priority fee) plus block time and tx-per-block for Ethereum, Polygon, BSC, and other EVM chains via Owlracle.
Price / call$0.001
Success—
StatusUnknown
How this service works
Returns tiered gas price estimates (acceptance-probability speeds with maxFeePerGas, priority fee and base fee) plus average block time and tx-per-block for Ethereum, Polygon, BSC and more from Owlracle. Serves autonomous transaction agents and agent-to-agent execution routers pricing gas per confirmation confidence across chains. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.
Output
A JSON object containing per-chain gas data: base_fee_gwei, gas_price_gwei, and estimated_time_sec for each requested chain (Ethereum, Polygon, BSC, and others), along with provenance indicating the Owlracle source URL.
Example use cases
Cheapest chain routing for DeFi bot
“Check the current gas prices on Ethereum, Polygon, and BSC right now and tell me which chain has the lowest base fee so my trading bot can submit the transaction there.”
Real-time gas monitoring dashboard
“Fetch the latest gas price tiers and estimated block times for Ethereum and Polygon so I can update my gas tracker dashboard with live data.”
Autonomous agent transaction scheduling
“I need the current base fee, priority fee, and estimated confirmation time for Ethereum and BSC so my autonomous agent can decide whether to send the transaction now or wait for cheaper gas.”
Technical details
Endpoint
POSThttps://owlracle-multichain-gas-oracle.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when you need multi-chain gas price data in a single call with confirmation-speed tiers, especially for autonomous transaction agents or execution routers that need to compare Ethereum, Polygon, and BSC gas costs simultaneously. Prefer this over single-chain RPC calls when cross-chain price comparison or agent-to-agent routing decisions are required.
Side effects
- Owlracle upstream API unavailable — returns error or stale data
- Unsupported chain requested — may return null or missing fields for that chain
- Invalid or missing keys/caller fields — authentication or routing failure
- Network timeout to underlying oracle — delayed or failed response
- Chain has zero base fee (e.g. BSC) — base_fee_gwei returns 0, which is expected but may confuse consumers
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| keys | string | keys |
| caller | string | caller |
| payload | string | payload |
| provides | string | provides |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"niche": "owlracle-multichain-gas-oracle",
"result": {
"bsc": {
"base_fee_gwei": 0,
"gas_price_gwei": 0,
"estimated_time_sec": 0
},
"polygon": {
"base_fee_gwei": 249.203563058,
"gas_price_gwei": 0,
"estimated_time_sec": 0
},
"ethereum": {
"base_fee_gwei": 0.093168755,
"gas_price_gwei": 0,
"estimated_time_sec": 0
}
},
"provenance": {
"url": "https://api.owlracle.info/v4/eth/gas",
"source": "Multi-Chain Gas Price Oracle"
}
}
}Tags
x402
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